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Posted to commits@plc4x.apache.org by sr...@apache.org on 2022/07/21 14:55:02 UTC

[plc4x] 02/02: feat(cbus): implemented proper checksum support

This is an automated email from the ASF dual-hosted git repository.

sruehl pushed a commit to branch develop
in repository https://gitbox.apache.org/repos/asf/plc4x.git

commit b0af4dc27f13c143018b34414807708992f78981
Author: Sebastian Rühl <sr...@apache.org>
AuthorDate: Thu Jul 21 16:54:53 2022 +0200

    feat(cbus): implemented proper checksum support
---
 plc4go/protocols/cbus/readwrite/model/CALReply.go  | 62 ++-------------
 .../protocols/cbus/readwrite/model/CALReplyLong.go |  7 +-
 .../cbus/readwrite/model/CALReplyShort.go          |  7 +-
 .../model/CBusPointToMultiPointCommand.go          | 62 ++-------------
 .../model/CBusPointToMultiPointCommandStatus.go    |  7 +-
 .../readwrite/model/CBusPointToPointCommand.go     | 64 ++--------------
 .../model/CBusPointToPointCommandDirect.go         |  7 +-
 .../model/CBusPointToPointCommandIndirect.go       |  7 +-
 .../model/CBusPointToPointToMultiPointCommand.go   | 62 ++-------------
 .../CBusPointToPointToMultiPointCommandNormal.go   |  7 +-
 .../CBusPointToPointToMultiPointCommandStatus.go   |  7 +-
 plc4go/protocols/cbus/readwrite/model/Checksum.go  | 38 +++++-----
 .../readwrite/model/ExtendedFormatStatusReply.go   | 41 +---------
 .../protocols/cbus/readwrite/model/MonitoredSAL.go | 62 ++-------------
 .../model/MonitoredSALLongFormSmartMode.go         |  7 +-
 .../model/MonitoredSALShortFormBasicMode.go        |  7 +-
 plc4go/protocols/cbus/readwrite/model/Normal.go    |  7 +-
 .../cbus/readwrite/model/ReplyEncodedReply.go      | 31 +++++++-
 .../cbus/readwrite/model/RequestCommand.go         | 31 +++++++-
 .../readwrite/model/RequestDirectCommandAccess.go  |  2 +-
 .../cbus/readwrite/model/RequestObsolete.go        |  2 +-
 .../readwrite/model/StandardFormatStatusReply.go   | 41 +---------
 .../protocols/cbus/readwrite/model/StaticHelper.go | 76 ++++++++++++++++---
 .../java/cbus/readwrite/utils/StaticHelper.java    | 73 ++++++++++++++----
 .../apache/plc4x/java/cbus/RandomPackagesTest.java |  5 +-
 .../org/apache/plc4x/java/cbus/ReferenceTest.java  | 88 +++++++++++-----------
 .../src/main/resources/protocols/cbus/c-bus.mspec  | 47 ++++++------
 27 files changed, 334 insertions(+), 523 deletions(-)

diff --git a/plc4go/protocols/cbus/readwrite/model/CALReply.go b/plc4go/protocols/cbus/readwrite/model/CALReply.go
index 258b17f87..dd28ef813 100644
--- a/plc4go/protocols/cbus/readwrite/model/CALReply.go
+++ b/plc4go/protocols/cbus/readwrite/model/CALReply.go
@@ -22,8 +22,6 @@ package model
 import (
 	"github.com/apache/plc4x/plc4go/internal/spi/utils"
 	"github.com/pkg/errors"
-	"github.com/rs/zerolog/log"
-	"io"
 )
 
 // Code generated by code-generation. DO NOT EDIT.
@@ -36,8 +34,6 @@ type CALReply interface {
 	GetCalType() byte
 	// GetCalData returns CalData (property field)
 	GetCalData() CALData
-	// GetCrc returns Crc (property field)
-	GetCrc() Checksum
 }
 
 // CALReplyExactly can be used when we want exactly this type and not a type which fulfills CALReply.
@@ -52,7 +48,6 @@ type _CALReply struct {
 	_CALReplyChildRequirements
 	CalType byte
 	CalData CALData
-	Crc     Checksum
 
 	// Arguments.
 	CBusOptions    CBusOptions
@@ -72,7 +67,7 @@ type CALReplyParent interface {
 
 type CALReplyChild interface {
 	utils.Serializable
-	InitializeParent(parent CALReply, calType byte, calData CALData, crc Checksum)
+	InitializeParent(parent CALReply, calType byte, calData CALData)
 	GetParent() *CALReply
 
 	GetTypeName() string
@@ -92,18 +87,14 @@ func (m *_CALReply) GetCalData() CALData {
 	return m.CalData
 }
 
-func (m *_CALReply) GetCrc() Checksum {
-	return m.Crc
-}
-
 ///////////////////////
 ///////////////////////
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
 // NewCALReply factory function for _CALReply
-func NewCALReply(calType byte, calData CALData, crc Checksum, cBusOptions CBusOptions, requestContext RequestContext) *_CALReply {
-	return &_CALReply{CalType: calType, CalData: calData, Crc: crc, CBusOptions: cBusOptions, RequestContext: requestContext}
+func NewCALReply(calType byte, calData CALData, cBusOptions CBusOptions, requestContext RequestContext) *_CALReply {
+	return &_CALReply{CalType: calType, CalData: calData, CBusOptions: cBusOptions, RequestContext: requestContext}
 }
 
 // Deprecated: use the interface for direct cast
@@ -127,11 +118,6 @@ func (m *_CALReply) GetParentLengthInBits() uint16 {
 	// Simple field (calData)
 	lengthInBits += m.CalData.GetLengthInBits()
 
-	// Optional Field (crc)
-	if m.Crc != nil {
-		lengthInBits += m.Crc.GetLengthInBits()
-	}
-
 	return lengthInBits
 }
 
@@ -160,7 +146,7 @@ func CALReplyParse(readBuffer utils.ReadBuffer, cBusOptions CBusOptions, request
 	// Switch Field (Depending on the discriminator values, passes the instantiation to a sub-type)
 	type CALReplyChildSerializeRequirement interface {
 		CALReply
-		InitializeParent(CALReply, byte, CALData, Checksum)
+		InitializeParent(CALReply, byte, CALData)
 		GetParent() CALReply
 	}
 	var _childTemp interface{}
@@ -192,34 +178,12 @@ func CALReplyParse(readBuffer utils.ReadBuffer, cBusOptions CBusOptions, request
 		return nil, errors.Wrap(closeErr, "Error closing for calData")
 	}
 
-	// Optional Field (crc) (Can be skipped, if a given expression evaluates to false)
-	var crc Checksum = nil
-	if cBusOptions.GetSrchk() {
-		currentPos = positionAware.GetPos()
-		if pullErr := readBuffer.PullContext("crc"); pullErr != nil {
-			return nil, errors.Wrap(pullErr, "Error pulling for crc")
-		}
-		_val, _err := ChecksumParse(readBuffer)
-		switch {
-		case errors.Is(_err, utils.ParseAssertError{}) || errors.Is(_err, io.EOF):
-			log.Debug().Err(_err).Msg("Resetting position because optional threw an error")
-			readBuffer.Reset(currentPos)
-		case _err != nil:
-			return nil, errors.Wrap(_err, "Error parsing 'crc' field of CALReply")
-		default:
-			crc = _val.(Checksum)
-			if closeErr := readBuffer.CloseContext("crc"); closeErr != nil {
-				return nil, errors.Wrap(closeErr, "Error closing for crc")
-			}
-		}
-	}
-
 	if closeErr := readBuffer.CloseContext("CALReply"); closeErr != nil {
 		return nil, errors.Wrap(closeErr, "Error closing for CALReply")
 	}
 
 	// Finish initializing
-	_child.InitializeParent(_child, calType, calData, crc)
+	_child.InitializeParent(_child, calType, calData)
 	return _child, nil
 }
 
@@ -250,22 +214,6 @@ func (pm *_CALReply) SerializeParent(writeBuffer utils.WriteBuffer, child CALRep
 		return errors.Wrap(_calDataErr, "Error serializing 'calData' field")
 	}
 
-	// Optional Field (crc) (Can be skipped, if the value is null)
-	var crc Checksum = nil
-	if m.GetCrc() != nil {
-		if pushErr := writeBuffer.PushContext("crc"); pushErr != nil {
-			return errors.Wrap(pushErr, "Error pushing for crc")
-		}
-		crc = m.GetCrc()
-		_crcErr := writeBuffer.WriteSerializable(crc)
-		if popErr := writeBuffer.PopContext("crc"); popErr != nil {
-			return errors.Wrap(popErr, "Error popping for crc")
-		}
-		if _crcErr != nil {
-			return errors.Wrap(_crcErr, "Error serializing 'crc' field")
-		}
-	}
-
 	if popErr := writeBuffer.PopContext("CALReply"); popErr != nil {
 		return errors.Wrap(popErr, "Error popping for CALReply")
 	}
diff --git a/plc4go/protocols/cbus/readwrite/model/CALReplyLong.go b/plc4go/protocols/cbus/readwrite/model/CALReplyLong.go
index 57202bfef..040b94740 100644
--- a/plc4go/protocols/cbus/readwrite/model/CALReplyLong.go
+++ b/plc4go/protocols/cbus/readwrite/model/CALReplyLong.go
@@ -77,10 +77,9 @@ type _CALReplyLong struct {
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
-func (m *_CALReplyLong) InitializeParent(parent CALReply, calType byte, calData CALData, crc Checksum) {
+func (m *_CALReplyLong) InitializeParent(parent CALReply, calType byte, calData CALData) {
 	m.CalType = calType
 	m.CalData = calData
-	m.Crc = crc
 }
 
 func (m *_CALReplyLong) GetParent() CALReply {
@@ -143,7 +142,7 @@ func (m *_CALReplyLong) GetIsUnitAddress() bool {
 ///////////////////////////////////////////////////////////
 
 // NewCALReplyLong factory function for _CALReplyLong
-func NewCALReplyLong(terminatingByte uint32, unitAddress UnitAddress, bridgeAddress BridgeAddress, serialInterfaceAddress SerialInterfaceAddress, reservedByte *byte, replyNetwork ReplyNetwork, calType byte, calData CALData, crc Checksum, cBusOptions CBusOptions, requestContext RequestContext) *_CALReplyLong {
+func NewCALReplyLong(terminatingByte uint32, unitAddress UnitAddress, bridgeAddress BridgeAddress, serialInterfaceAddress SerialInterfaceAddress, reservedByte *byte, replyNetwork ReplyNetwork, calType byte, calData CALData, cBusOptions CBusOptions, requestContext RequestContext) *_CALReplyLong {
 	_result := &_CALReplyLong{
 		TerminatingByte:        terminatingByte,
 		UnitAddress:            unitAddress,
@@ -151,7 +150,7 @@ func NewCALReplyLong(terminatingByte uint32, unitAddress UnitAddress, bridgeAddr
 		SerialInterfaceAddress: serialInterfaceAddress,
 		ReservedByte:           reservedByte,
 		ReplyNetwork:           replyNetwork,
-		_CALReply:              NewCALReply(calType, calData, crc, cBusOptions, requestContext),
+		_CALReply:              NewCALReply(calType, calData, cBusOptions, requestContext),
 	}
 	_result._CALReply._CALReplyChildRequirements = _result
 	return _result
diff --git a/plc4go/protocols/cbus/readwrite/model/CALReplyShort.go b/plc4go/protocols/cbus/readwrite/model/CALReplyShort.go
index cc2897ae3..7ba375842 100644
--- a/plc4go/protocols/cbus/readwrite/model/CALReplyShort.go
+++ b/plc4go/protocols/cbus/readwrite/model/CALReplyShort.go
@@ -55,10 +55,9 @@ type _CALReplyShort struct {
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
-func (m *_CALReplyShort) InitializeParent(parent CALReply, calType byte, calData CALData, crc Checksum) {
+func (m *_CALReplyShort) InitializeParent(parent CALReply, calType byte, calData CALData) {
 	m.CalType = calType
 	m.CalData = calData
-	m.Crc = crc
 }
 
 func (m *_CALReplyShort) GetParent() CALReply {
@@ -66,9 +65,9 @@ func (m *_CALReplyShort) GetParent() CALReply {
 }
 
 // NewCALReplyShort factory function for _CALReplyShort
-func NewCALReplyShort(calType byte, calData CALData, crc Checksum, cBusOptions CBusOptions, requestContext RequestContext) *_CALReplyShort {
+func NewCALReplyShort(calType byte, calData CALData, cBusOptions CBusOptions, requestContext RequestContext) *_CALReplyShort {
 	_result := &_CALReplyShort{
-		_CALReply: NewCALReply(calType, calData, crc, cBusOptions, requestContext),
+		_CALReply: NewCALReply(calType, calData, cBusOptions, requestContext),
 	}
 	_result._CALReply._CALReplyChildRequirements = _result
 	return _result
diff --git a/plc4go/protocols/cbus/readwrite/model/CBusPointToMultiPointCommand.go b/plc4go/protocols/cbus/readwrite/model/CBusPointToMultiPointCommand.go
index 426e6e77f..1c27c8333 100644
--- a/plc4go/protocols/cbus/readwrite/model/CBusPointToMultiPointCommand.go
+++ b/plc4go/protocols/cbus/readwrite/model/CBusPointToMultiPointCommand.go
@@ -22,8 +22,6 @@ package model
 import (
 	"github.com/apache/plc4x/plc4go/internal/spi/utils"
 	"github.com/pkg/errors"
-	"github.com/rs/zerolog/log"
-	"io"
 )
 
 // Code generated by code-generation. DO NOT EDIT.
@@ -34,8 +32,6 @@ type CBusPointToMultiPointCommand interface {
 	utils.Serializable
 	// GetPeekedApplication returns PeekedApplication (property field)
 	GetPeekedApplication() byte
-	// GetCrc returns Crc (property field)
-	GetCrc() Checksum
 }
 
 // CBusPointToMultiPointCommandExactly can be used when we want exactly this type and not a type which fulfills CBusPointToMultiPointCommand.
@@ -49,7 +45,6 @@ type CBusPointToMultiPointCommandExactly interface {
 type _CBusPointToMultiPointCommand struct {
 	_CBusPointToMultiPointCommandChildRequirements
 	PeekedApplication byte
-	Crc               Checksum
 
 	// Arguments.
 	CBusOptions CBusOptions
@@ -68,7 +63,7 @@ type CBusPointToMultiPointCommandParent interface {
 
 type CBusPointToMultiPointCommandChild interface {
 	utils.Serializable
-	InitializeParent(parent CBusPointToMultiPointCommand, peekedApplication byte, crc Checksum)
+	InitializeParent(parent CBusPointToMultiPointCommand, peekedApplication byte)
 	GetParent() *CBusPointToMultiPointCommand
 
 	GetTypeName() string
@@ -84,18 +79,14 @@ func (m *_CBusPointToMultiPointCommand) GetPeekedApplication() byte {
 	return m.PeekedApplication
 }
 
-func (m *_CBusPointToMultiPointCommand) GetCrc() Checksum {
-	return m.Crc
-}
-
 ///////////////////////
 ///////////////////////
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
 // NewCBusPointToMultiPointCommand factory function for _CBusPointToMultiPointCommand
-func NewCBusPointToMultiPointCommand(peekedApplication byte, crc Checksum, cBusOptions CBusOptions) *_CBusPointToMultiPointCommand {
-	return &_CBusPointToMultiPointCommand{PeekedApplication: peekedApplication, Crc: crc, CBusOptions: cBusOptions}
+func NewCBusPointToMultiPointCommand(peekedApplication byte, cBusOptions CBusOptions) *_CBusPointToMultiPointCommand {
+	return &_CBusPointToMultiPointCommand{PeekedApplication: peekedApplication, CBusOptions: cBusOptions}
 }
 
 // Deprecated: use the interface for direct cast
@@ -116,11 +107,6 @@ func (m *_CBusPointToMultiPointCommand) GetTypeName() string {
 func (m *_CBusPointToMultiPointCommand) GetParentLengthInBits() uint16 {
 	lengthInBits := uint16(0)
 
-	// Optional Field (crc)
-	if m.Crc != nil {
-		lengthInBits += m.Crc.GetLengthInBits()
-	}
-
 	return lengthInBits
 }
 
@@ -149,7 +135,7 @@ func CBusPointToMultiPointCommandParse(readBuffer utils.ReadBuffer, cBusOptions
 	// Switch Field (Depending on the discriminator values, passes the instantiation to a sub-type)
 	type CBusPointToMultiPointCommandChildSerializeRequirement interface {
 		CBusPointToMultiPointCommand
-		InitializeParent(CBusPointToMultiPointCommand, byte, Checksum)
+		InitializeParent(CBusPointToMultiPointCommand, byte)
 		GetParent() CBusPointToMultiPointCommand
 	}
 	var _childTemp interface{}
@@ -168,34 +154,12 @@ func CBusPointToMultiPointCommandParse(readBuffer utils.ReadBuffer, cBusOptions
 	}
 	_child = _childTemp.(CBusPointToMultiPointCommandChildSerializeRequirement)
 
-	// Optional Field (crc) (Can be skipped, if a given expression evaluates to false)
-	var crc Checksum = nil
-	if cBusOptions.GetSrchk() {
-		currentPos = positionAware.GetPos()
-		if pullErr := readBuffer.PullContext("crc"); pullErr != nil {
-			return nil, errors.Wrap(pullErr, "Error pulling for crc")
-		}
-		_val, _err := ChecksumParse(readBuffer)
-		switch {
-		case errors.Is(_err, utils.ParseAssertError{}) || errors.Is(_err, io.EOF):
-			log.Debug().Err(_err).Msg("Resetting position because optional threw an error")
-			readBuffer.Reset(currentPos)
-		case _err != nil:
-			return nil, errors.Wrap(_err, "Error parsing 'crc' field of CBusPointToMultiPointCommand")
-		default:
-			crc = _val.(Checksum)
-			if closeErr := readBuffer.CloseContext("crc"); closeErr != nil {
-				return nil, errors.Wrap(closeErr, "Error closing for crc")
-			}
-		}
-	}
-
 	if closeErr := readBuffer.CloseContext("CBusPointToMultiPointCommand"); closeErr != nil {
 		return nil, errors.Wrap(closeErr, "Error closing for CBusPointToMultiPointCommand")
 	}
 
 	// Finish initializing
-	_child.InitializeParent(_child, peekedApplication, crc)
+	_child.InitializeParent(_child, peekedApplication)
 	return _child, nil
 }
 
@@ -214,22 +178,6 @@ func (pm *_CBusPointToMultiPointCommand) SerializeParent(writeBuffer utils.Write
 		return errors.Wrap(_typeSwitchErr, "Error serializing sub-type field")
 	}
 
-	// Optional Field (crc) (Can be skipped, if the value is null)
-	var crc Checksum = nil
-	if m.GetCrc() != nil {
-		if pushErr := writeBuffer.PushContext("crc"); pushErr != nil {
-			return errors.Wrap(pushErr, "Error pushing for crc")
-		}
-		crc = m.GetCrc()
-		_crcErr := writeBuffer.WriteSerializable(crc)
-		if popErr := writeBuffer.PopContext("crc"); popErr != nil {
-			return errors.Wrap(popErr, "Error popping for crc")
-		}
-		if _crcErr != nil {
-			return errors.Wrap(_crcErr, "Error serializing 'crc' field")
-		}
-	}
-
 	if popErr := writeBuffer.PopContext("CBusPointToMultiPointCommand"); popErr != nil {
 		return errors.Wrap(popErr, "Error popping for CBusPointToMultiPointCommand")
 	}
diff --git a/plc4go/protocols/cbus/readwrite/model/CBusPointToMultiPointCommandStatus.go b/plc4go/protocols/cbus/readwrite/model/CBusPointToMultiPointCommandStatus.go
index fce5b662e..49c57d979 100644
--- a/plc4go/protocols/cbus/readwrite/model/CBusPointToMultiPointCommandStatus.go
+++ b/plc4go/protocols/cbus/readwrite/model/CBusPointToMultiPointCommandStatus.go
@@ -59,9 +59,8 @@ type _CBusPointToMultiPointCommandStatus struct {
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
-func (m *_CBusPointToMultiPointCommandStatus) InitializeParent(parent CBusPointToMultiPointCommand, peekedApplication byte, crc Checksum) {
+func (m *_CBusPointToMultiPointCommandStatus) InitializeParent(parent CBusPointToMultiPointCommand, peekedApplication byte) {
 	m.PeekedApplication = peekedApplication
-	m.Crc = crc
 }
 
 func (m *_CBusPointToMultiPointCommandStatus) GetParent() CBusPointToMultiPointCommand {
@@ -83,10 +82,10 @@ func (m *_CBusPointToMultiPointCommandStatus) GetStatusRequest() StatusRequest {
 ///////////////////////////////////////////////////////////
 
 // NewCBusPointToMultiPointCommandStatus factory function for _CBusPointToMultiPointCommandStatus
-func NewCBusPointToMultiPointCommandStatus(statusRequest StatusRequest, peekedApplication byte, crc Checksum, cBusOptions CBusOptions) *_CBusPointToMultiPointCommandStatus {
+func NewCBusPointToMultiPointCommandStatus(statusRequest StatusRequest, peekedApplication byte, cBusOptions CBusOptions) *_CBusPointToMultiPointCommandStatus {
 	_result := &_CBusPointToMultiPointCommandStatus{
 		StatusRequest:                 statusRequest,
-		_CBusPointToMultiPointCommand: NewCBusPointToMultiPointCommand(peekedApplication, crc, cBusOptions),
+		_CBusPointToMultiPointCommand: NewCBusPointToMultiPointCommand(peekedApplication, cBusOptions),
 	}
 	_result._CBusPointToMultiPointCommand._CBusPointToMultiPointCommandChildRequirements = _result
 	return _result
diff --git a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommand.go b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommand.go
index ced9dcea8..c72d7f3d0 100644
--- a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommand.go
+++ b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommand.go
@@ -22,8 +22,6 @@ package model
 import (
 	"github.com/apache/plc4x/plc4go/internal/spi/utils"
 	"github.com/pkg/errors"
-	"github.com/rs/zerolog/log"
-	"io"
 )
 
 // Code generated by code-generation. DO NOT EDIT.
@@ -36,8 +34,6 @@ type CBusPointToPointCommand interface {
 	GetBridgeAddressCountPeek() uint16
 	// GetCalData returns CalData (property field)
 	GetCalData() CALData
-	// GetCrc returns Crc (property field)
-	GetCrc() Checksum
 	// GetIsDirect returns IsDirect (virtual field)
 	GetIsDirect() bool
 }
@@ -54,7 +50,6 @@ type _CBusPointToPointCommand struct {
 	_CBusPointToPointCommandChildRequirements
 	BridgeAddressCountPeek uint16
 	CalData                CALData
-	Crc                    Checksum
 
 	// Arguments.
 	CBusOptions CBusOptions
@@ -73,7 +68,7 @@ type CBusPointToPointCommandParent interface {
 
 type CBusPointToPointCommandChild interface {
 	utils.Serializable
-	InitializeParent(parent CBusPointToPointCommand, bridgeAddressCountPeek uint16, calData CALData, crc Checksum)
+	InitializeParent(parent CBusPointToPointCommand, bridgeAddressCountPeek uint16, calData CALData)
 	GetParent() *CBusPointToPointCommand
 
 	GetTypeName() string
@@ -93,10 +88,6 @@ func (m *_CBusPointToPointCommand) GetCalData() CALData {
 	return m.CalData
 }
 
-func (m *_CBusPointToPointCommand) GetCrc() Checksum {
-	return m.Crc
-}
-
 ///////////////////////
 ///////////////////////
 ///////////////////////////////////////////////////////////
@@ -107,8 +98,6 @@ func (m *_CBusPointToPointCommand) GetCrc() Checksum {
 ///////////////////////
 
 func (m *_CBusPointToPointCommand) GetIsDirect() bool {
-	crc := m.Crc
-	_ = crc
 	return bool(bool(((m.GetBridgeAddressCountPeek()) & (0x00FF)) == (0x0000)))
 }
 
@@ -118,8 +107,8 @@ func (m *_CBusPointToPointCommand) GetIsDirect() bool {
 ///////////////////////////////////////////////////////////
 
 // NewCBusPointToPointCommand factory function for _CBusPointToPointCommand
-func NewCBusPointToPointCommand(bridgeAddressCountPeek uint16, calData CALData, crc Checksum, cBusOptions CBusOptions) *_CBusPointToPointCommand {
-	return &_CBusPointToPointCommand{BridgeAddressCountPeek: bridgeAddressCountPeek, CalData: calData, Crc: crc, CBusOptions: cBusOptions}
+func NewCBusPointToPointCommand(bridgeAddressCountPeek uint16, calData CALData, cBusOptions CBusOptions) *_CBusPointToPointCommand {
+	return &_CBusPointToPointCommand{BridgeAddressCountPeek: bridgeAddressCountPeek, CalData: calData, CBusOptions: cBusOptions}
 }
 
 // Deprecated: use the interface for direct cast
@@ -145,11 +134,6 @@ func (m *_CBusPointToPointCommand) GetParentLengthInBits() uint16 {
 	// Simple field (calData)
 	lengthInBits += m.CalData.GetLengthInBits()
 
-	// Optional Field (crc)
-	if m.Crc != nil {
-		lengthInBits += m.Crc.GetLengthInBits()
-	}
-
 	return lengthInBits
 }
 
@@ -183,7 +167,7 @@ func CBusPointToPointCommandParse(readBuffer utils.ReadBuffer, cBusOptions CBusO
 	// Switch Field (Depending on the discriminator values, passes the instantiation to a sub-type)
 	type CBusPointToPointCommandChildSerializeRequirement interface {
 		CBusPointToPointCommand
-		InitializeParent(CBusPointToPointCommand, uint16, CALData, Checksum)
+		InitializeParent(CBusPointToPointCommand, uint16, CALData)
 		GetParent() CBusPointToPointCommand
 	}
 	var _childTemp interface{}
@@ -215,34 +199,12 @@ func CBusPointToPointCommandParse(readBuffer utils.ReadBuffer, cBusOptions CBusO
 		return nil, errors.Wrap(closeErr, "Error closing for calData")
 	}
 
-	// Optional Field (crc) (Can be skipped, if a given expression evaluates to false)
-	var crc Checksum = nil
-	if cBusOptions.GetSrchk() {
-		currentPos = positionAware.GetPos()
-		if pullErr := readBuffer.PullContext("crc"); pullErr != nil {
-			return nil, errors.Wrap(pullErr, "Error pulling for crc")
-		}
-		_val, _err := ChecksumParse(readBuffer)
-		switch {
-		case errors.Is(_err, utils.ParseAssertError{}) || errors.Is(_err, io.EOF):
-			log.Debug().Err(_err).Msg("Resetting position because optional threw an error")
-			readBuffer.Reset(currentPos)
-		case _err != nil:
-			return nil, errors.Wrap(_err, "Error parsing 'crc' field of CBusPointToPointCommand")
-		default:
-			crc = _val.(Checksum)
-			if closeErr := readBuffer.CloseContext("crc"); closeErr != nil {
-				return nil, errors.Wrap(closeErr, "Error closing for crc")
-			}
-		}
-	}
-
 	if closeErr := readBuffer.CloseContext("CBusPointToPointCommand"); closeErr != nil {
 		return nil, errors.Wrap(closeErr, "Error closing for CBusPointToPointCommand")
 	}
 
 	// Finish initializing
-	_child.InitializeParent(_child, bridgeAddressCountPeek, calData, crc)
+	_child.InitializeParent(_child, bridgeAddressCountPeek, calData)
 	return _child, nil
 }
 
@@ -277,22 +239,6 @@ func (pm *_CBusPointToPointCommand) SerializeParent(writeBuffer utils.WriteBuffe
 		return errors.Wrap(_calDataErr, "Error serializing 'calData' field")
 	}
 
-	// Optional Field (crc) (Can be skipped, if the value is null)
-	var crc Checksum = nil
-	if m.GetCrc() != nil {
-		if pushErr := writeBuffer.PushContext("crc"); pushErr != nil {
-			return errors.Wrap(pushErr, "Error pushing for crc")
-		}
-		crc = m.GetCrc()
-		_crcErr := writeBuffer.WriteSerializable(crc)
-		if popErr := writeBuffer.PopContext("crc"); popErr != nil {
-			return errors.Wrap(popErr, "Error popping for crc")
-		}
-		if _crcErr != nil {
-			return errors.Wrap(_crcErr, "Error serializing 'crc' field")
-		}
-	}
-
 	if popErr := writeBuffer.PopContext("CBusPointToPointCommand"); popErr != nil {
 		return errors.Wrap(popErr, "Error popping for CBusPointToPointCommand")
 	}
diff --git a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommandDirect.go b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommandDirect.go
index 232424370..d6fa3096d 100644
--- a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommandDirect.go
+++ b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommandDirect.go
@@ -59,10 +59,9 @@ type _CBusPointToPointCommandDirect struct {
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
-func (m *_CBusPointToPointCommandDirect) InitializeParent(parent CBusPointToPointCommand, bridgeAddressCountPeek uint16, calData CALData, crc Checksum) {
+func (m *_CBusPointToPointCommandDirect) InitializeParent(parent CBusPointToPointCommand, bridgeAddressCountPeek uint16, calData CALData) {
 	m.BridgeAddressCountPeek = bridgeAddressCountPeek
 	m.CalData = calData
-	m.Crc = crc
 }
 
 func (m *_CBusPointToPointCommandDirect) GetParent() CBusPointToPointCommand {
@@ -84,10 +83,10 @@ func (m *_CBusPointToPointCommandDirect) GetUnitAddress() UnitAddress {
 ///////////////////////////////////////////////////////////
 
 // NewCBusPointToPointCommandDirect factory function for _CBusPointToPointCommandDirect
-func NewCBusPointToPointCommandDirect(unitAddress UnitAddress, bridgeAddressCountPeek uint16, calData CALData, crc Checksum, cBusOptions CBusOptions) *_CBusPointToPointCommandDirect {
+func NewCBusPointToPointCommandDirect(unitAddress UnitAddress, bridgeAddressCountPeek uint16, calData CALData, cBusOptions CBusOptions) *_CBusPointToPointCommandDirect {
 	_result := &_CBusPointToPointCommandDirect{
 		UnitAddress:              unitAddress,
-		_CBusPointToPointCommand: NewCBusPointToPointCommand(bridgeAddressCountPeek, calData, crc, cBusOptions),
+		_CBusPointToPointCommand: NewCBusPointToPointCommand(bridgeAddressCountPeek, calData, cBusOptions),
 	}
 	_result._CBusPointToPointCommand._CBusPointToPointCommandChildRequirements = _result
 	return _result
diff --git a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommandIndirect.go b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommandIndirect.go
index 7dcca96c3..71de19677 100644
--- a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommandIndirect.go
+++ b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointCommandIndirect.go
@@ -64,10 +64,9 @@ type _CBusPointToPointCommandIndirect struct {
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
-func (m *_CBusPointToPointCommandIndirect) InitializeParent(parent CBusPointToPointCommand, bridgeAddressCountPeek uint16, calData CALData, crc Checksum) {
+func (m *_CBusPointToPointCommandIndirect) InitializeParent(parent CBusPointToPointCommand, bridgeAddressCountPeek uint16, calData CALData) {
 	m.BridgeAddressCountPeek = bridgeAddressCountPeek
 	m.CalData = calData
-	m.Crc = crc
 }
 
 func (m *_CBusPointToPointCommandIndirect) GetParent() CBusPointToPointCommand {
@@ -97,12 +96,12 @@ func (m *_CBusPointToPointCommandIndirect) GetUnitAddress() UnitAddress {
 ///////////////////////////////////////////////////////////
 
 // NewCBusPointToPointCommandIndirect factory function for _CBusPointToPointCommandIndirect
-func NewCBusPointToPointCommandIndirect(bridgeAddress BridgeAddress, networkRoute NetworkRoute, unitAddress UnitAddress, bridgeAddressCountPeek uint16, calData CALData, crc Checksum, cBusOptions CBusOptions) *_CBusPointToPointCommandIndirect {
+func NewCBusPointToPointCommandIndirect(bridgeAddress BridgeAddress, networkRoute NetworkRoute, unitAddress UnitAddress, bridgeAddressCountPeek uint16, calData CALData, cBusOptions CBusOptions) *_CBusPointToPointCommandIndirect {
 	_result := &_CBusPointToPointCommandIndirect{
 		BridgeAddress:            bridgeAddress,
 		NetworkRoute:             networkRoute,
 		UnitAddress:              unitAddress,
-		_CBusPointToPointCommand: NewCBusPointToPointCommand(bridgeAddressCountPeek, calData, crc, cBusOptions),
+		_CBusPointToPointCommand: NewCBusPointToPointCommand(bridgeAddressCountPeek, calData, cBusOptions),
 	}
 	_result._CBusPointToPointCommand._CBusPointToPointCommandChildRequirements = _result
 	return _result
diff --git a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommand.go b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommand.go
index f07a8a980..1ef652b2e 100644
--- a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommand.go
+++ b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommand.go
@@ -22,8 +22,6 @@ package model
 import (
 	"github.com/apache/plc4x/plc4go/internal/spi/utils"
 	"github.com/pkg/errors"
-	"github.com/rs/zerolog/log"
-	"io"
 )
 
 // Code generated by code-generation. DO NOT EDIT.
@@ -38,8 +36,6 @@ type CBusPointToPointToMultiPointCommand interface {
 	GetNetworkRoute() NetworkRoute
 	// GetPeekedApplication returns PeekedApplication (property field)
 	GetPeekedApplication() byte
-	// GetCrc returns Crc (property field)
-	GetCrc() Checksum
 }
 
 // CBusPointToPointToMultiPointCommandExactly can be used when we want exactly this type and not a type which fulfills CBusPointToPointToMultiPointCommand.
@@ -55,7 +51,6 @@ type _CBusPointToPointToMultiPointCommand struct {
 	BridgeAddress     BridgeAddress
 	NetworkRoute      NetworkRoute
 	PeekedApplication byte
-	Crc               Checksum
 
 	// Arguments.
 	CBusOptions CBusOptions
@@ -74,7 +69,7 @@ type CBusPointToPointToMultiPointCommandParent interface {
 
 type CBusPointToPointToMultiPointCommandChild interface {
 	utils.Serializable
-	InitializeParent(parent CBusPointToPointToMultiPointCommand, bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte, crc Checksum)
+	InitializeParent(parent CBusPointToPointToMultiPointCommand, bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte)
 	GetParent() *CBusPointToPointToMultiPointCommand
 
 	GetTypeName() string
@@ -98,18 +93,14 @@ func (m *_CBusPointToPointToMultiPointCommand) GetPeekedApplication() byte {
 	return m.PeekedApplication
 }
 
-func (m *_CBusPointToPointToMultiPointCommand) GetCrc() Checksum {
-	return m.Crc
-}
-
 ///////////////////////
 ///////////////////////
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
 // NewCBusPointToPointToMultiPointCommand factory function for _CBusPointToPointToMultiPointCommand
-func NewCBusPointToPointToMultiPointCommand(bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte, crc Checksum, cBusOptions CBusOptions) *_CBusPointToPointToMultiPointCommand {
-	return &_CBusPointToPointToMultiPointCommand{BridgeAddress: bridgeAddress, NetworkRoute: networkRoute, PeekedApplication: peekedApplication, Crc: crc, CBusOptions: cBusOptions}
+func NewCBusPointToPointToMultiPointCommand(bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte, cBusOptions CBusOptions) *_CBusPointToPointToMultiPointCommand {
+	return &_CBusPointToPointToMultiPointCommand{BridgeAddress: bridgeAddress, NetworkRoute: networkRoute, PeekedApplication: peekedApplication, CBusOptions: cBusOptions}
 }
 
 // Deprecated: use the interface for direct cast
@@ -136,11 +127,6 @@ func (m *_CBusPointToPointToMultiPointCommand) GetParentLengthInBits() uint16 {
 	// Simple field (networkRoute)
 	lengthInBits += m.NetworkRoute.GetLengthInBits()
 
-	// Optional Field (crc)
-	if m.Crc != nil {
-		lengthInBits += m.Crc.GetLengthInBits()
-	}
-
 	return lengthInBits
 }
 
@@ -195,7 +181,7 @@ func CBusPointToPointToMultiPointCommandParse(readBuffer utils.ReadBuffer, cBusO
 	// Switch Field (Depending on the discriminator values, passes the instantiation to a sub-type)
 	type CBusPointToPointToMultiPointCommandChildSerializeRequirement interface {
 		CBusPointToPointToMultiPointCommand
-		InitializeParent(CBusPointToPointToMultiPointCommand, BridgeAddress, NetworkRoute, byte, Checksum)
+		InitializeParent(CBusPointToPointToMultiPointCommand, BridgeAddress, NetworkRoute, byte)
 		GetParent() CBusPointToPointToMultiPointCommand
 	}
 	var _childTemp interface{}
@@ -214,34 +200,12 @@ func CBusPointToPointToMultiPointCommandParse(readBuffer utils.ReadBuffer, cBusO
 	}
 	_child = _childTemp.(CBusPointToPointToMultiPointCommandChildSerializeRequirement)
 
-	// Optional Field (crc) (Can be skipped, if a given expression evaluates to false)
-	var crc Checksum = nil
-	if cBusOptions.GetSrchk() {
-		currentPos = positionAware.GetPos()
-		if pullErr := readBuffer.PullContext("crc"); pullErr != nil {
-			return nil, errors.Wrap(pullErr, "Error pulling for crc")
-		}
-		_val, _err := ChecksumParse(readBuffer)
-		switch {
-		case errors.Is(_err, utils.ParseAssertError{}) || errors.Is(_err, io.EOF):
-			log.Debug().Err(_err).Msg("Resetting position because optional threw an error")
-			readBuffer.Reset(currentPos)
-		case _err != nil:
-			return nil, errors.Wrap(_err, "Error parsing 'crc' field of CBusPointToPointToMultiPointCommand")
-		default:
-			crc = _val.(Checksum)
-			if closeErr := readBuffer.CloseContext("crc"); closeErr != nil {
-				return nil, errors.Wrap(closeErr, "Error closing for crc")
-			}
-		}
-	}
-
 	if closeErr := readBuffer.CloseContext("CBusPointToPointToMultiPointCommand"); closeErr != nil {
 		return nil, errors.Wrap(closeErr, "Error closing for CBusPointToPointToMultiPointCommand")
 	}
 
 	// Finish initializing
-	_child.InitializeParent(_child, bridgeAddress, networkRoute, peekedApplication, crc)
+	_child.InitializeParent(_child, bridgeAddress, networkRoute, peekedApplication)
 	return _child, nil
 }
 
@@ -284,22 +248,6 @@ func (pm *_CBusPointToPointToMultiPointCommand) SerializeParent(writeBuffer util
 		return errors.Wrap(_typeSwitchErr, "Error serializing sub-type field")
 	}
 
-	// Optional Field (crc) (Can be skipped, if the value is null)
-	var crc Checksum = nil
-	if m.GetCrc() != nil {
-		if pushErr := writeBuffer.PushContext("crc"); pushErr != nil {
-			return errors.Wrap(pushErr, "Error pushing for crc")
-		}
-		crc = m.GetCrc()
-		_crcErr := writeBuffer.WriteSerializable(crc)
-		if popErr := writeBuffer.PopContext("crc"); popErr != nil {
-			return errors.Wrap(popErr, "Error popping for crc")
-		}
-		if _crcErr != nil {
-			return errors.Wrap(_crcErr, "Error serializing 'crc' field")
-		}
-	}
-
 	if popErr := writeBuffer.PopContext("CBusPointToPointToMultiPointCommand"); popErr != nil {
 		return errors.Wrap(popErr, "Error popping for CBusPointToPointToMultiPointCommand")
 	}
diff --git a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommandNormal.go b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommandNormal.go
index fe8ded7ad..5c3fb6c7e 100644
--- a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommandNormal.go
+++ b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommandNormal.go
@@ -61,11 +61,10 @@ type _CBusPointToPointToMultiPointCommandNormal struct {
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
-func (m *_CBusPointToPointToMultiPointCommandNormal) InitializeParent(parent CBusPointToPointToMultiPointCommand, bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte, crc Checksum) {
+func (m *_CBusPointToPointToMultiPointCommandNormal) InitializeParent(parent CBusPointToPointToMultiPointCommand, bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte) {
 	m.BridgeAddress = bridgeAddress
 	m.NetworkRoute = networkRoute
 	m.PeekedApplication = peekedApplication
-	m.Crc = crc
 }
 
 func (m *_CBusPointToPointToMultiPointCommandNormal) GetParent() CBusPointToPointToMultiPointCommand {
@@ -91,11 +90,11 @@ func (m *_CBusPointToPointToMultiPointCommandNormal) GetSalData() SALData {
 ///////////////////////////////////////////////////////////
 
 // NewCBusPointToPointToMultiPointCommandNormal factory function for _CBusPointToPointToMultiPointCommandNormal
-func NewCBusPointToPointToMultiPointCommandNormal(application ApplicationIdContainer, salData SALData, bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte, crc Checksum, cBusOptions CBusOptions) *_CBusPointToPointToMultiPointCommandNormal {
+func NewCBusPointToPointToMultiPointCommandNormal(application ApplicationIdContainer, salData SALData, bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte, cBusOptions CBusOptions) *_CBusPointToPointToMultiPointCommandNormal {
 	_result := &_CBusPointToPointToMultiPointCommandNormal{
 		Application:                          application,
 		SalData:                              salData,
-		_CBusPointToPointToMultiPointCommand: NewCBusPointToPointToMultiPointCommand(bridgeAddress, networkRoute, peekedApplication, crc, cBusOptions),
+		_CBusPointToPointToMultiPointCommand: NewCBusPointToPointToMultiPointCommand(bridgeAddress, networkRoute, peekedApplication, cBusOptions),
 	}
 	_result._CBusPointToPointToMultiPointCommand._CBusPointToPointToMultiPointCommandChildRequirements = _result
 	return _result
diff --git a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommandStatus.go b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommandStatus.go
index c137ef75c..c0bb5bd3a 100644
--- a/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommandStatus.go
+++ b/plc4go/protocols/cbus/readwrite/model/CBusPointToPointToMultiPointCommandStatus.go
@@ -59,11 +59,10 @@ type _CBusPointToPointToMultiPointCommandStatus struct {
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
-func (m *_CBusPointToPointToMultiPointCommandStatus) InitializeParent(parent CBusPointToPointToMultiPointCommand, bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte, crc Checksum) {
+func (m *_CBusPointToPointToMultiPointCommandStatus) InitializeParent(parent CBusPointToPointToMultiPointCommand, bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte) {
 	m.BridgeAddress = bridgeAddress
 	m.NetworkRoute = networkRoute
 	m.PeekedApplication = peekedApplication
-	m.Crc = crc
 }
 
 func (m *_CBusPointToPointToMultiPointCommandStatus) GetParent() CBusPointToPointToMultiPointCommand {
@@ -85,10 +84,10 @@ func (m *_CBusPointToPointToMultiPointCommandStatus) GetStatusRequest() StatusRe
 ///////////////////////////////////////////////////////////
 
 // NewCBusPointToPointToMultiPointCommandStatus factory function for _CBusPointToPointToMultiPointCommandStatus
-func NewCBusPointToPointToMultiPointCommandStatus(statusRequest StatusRequest, bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte, crc Checksum, cBusOptions CBusOptions) *_CBusPointToPointToMultiPointCommandStatus {
+func NewCBusPointToPointToMultiPointCommandStatus(statusRequest StatusRequest, bridgeAddress BridgeAddress, networkRoute NetworkRoute, peekedApplication byte, cBusOptions CBusOptions) *_CBusPointToPointToMultiPointCommandStatus {
 	_result := &_CBusPointToPointToMultiPointCommandStatus{
 		StatusRequest:                        statusRequest,
-		_CBusPointToPointToMultiPointCommand: NewCBusPointToPointToMultiPointCommand(bridgeAddress, networkRoute, peekedApplication, crc, cBusOptions),
+		_CBusPointToPointToMultiPointCommand: NewCBusPointToPointToMultiPointCommand(bridgeAddress, networkRoute, peekedApplication, cBusOptions),
 	}
 	_result._CBusPointToPointToMultiPointCommand._CBusPointToPointToMultiPointCommandChildRequirements = _result
 	return _result
diff --git a/plc4go/protocols/cbus/readwrite/model/Checksum.go b/plc4go/protocols/cbus/readwrite/model/Checksum.go
index ffcf57baf..42e362aa6 100644
--- a/plc4go/protocols/cbus/readwrite/model/Checksum.go
+++ b/plc4go/protocols/cbus/readwrite/model/Checksum.go
@@ -30,8 +30,8 @@ import (
 type Checksum interface {
 	utils.LengthAware
 	utils.Serializable
-	// GetCrc returns Crc (property field)
-	GetCrc() byte
+	// GetValue returns Value (property field)
+	GetValue() byte
 }
 
 // ChecksumExactly can be used when we want exactly this type and not a type which fulfills Checksum.
@@ -43,7 +43,7 @@ type ChecksumExactly interface {
 
 // _Checksum is the data-structure of this message
 type _Checksum struct {
-	Crc byte
+	Value byte
 }
 
 ///////////////////////////////////////////////////////////
@@ -51,8 +51,8 @@ type _Checksum struct {
 /////////////////////// Accessors for property fields.
 ///////////////////////
 
-func (m *_Checksum) GetCrc() byte {
-	return m.Crc
+func (m *_Checksum) GetValue() byte {
+	return m.Value
 }
 
 ///////////////////////
@@ -61,8 +61,8 @@ func (m *_Checksum) GetCrc() byte {
 ///////////////////////////////////////////////////////////
 
 // NewChecksum factory function for _Checksum
-func NewChecksum(crc byte) *_Checksum {
-	return &_Checksum{Crc: crc}
+func NewChecksum(value byte) *_Checksum {
+	return &_Checksum{Value: value}
 }
 
 // Deprecated: use the interface for direct cast
@@ -87,7 +87,7 @@ func (m *_Checksum) GetLengthInBits() uint16 {
 func (m *_Checksum) GetLengthInBitsConditional(lastItem bool) uint16 {
 	lengthInBits := uint16(0)
 
-	// Simple field (crc)
+	// Simple field (value)
 	lengthInBits += 8
 
 	return lengthInBits
@@ -106,19 +106,19 @@ func ChecksumParse(readBuffer utils.ReadBuffer) (Checksum, error) {
 	currentPos := positionAware.GetPos()
 	_ = currentPos
 
-	// Simple Field (crc)
-	_crc, _crcErr := readBuffer.ReadByte("crc")
-	if _crcErr != nil {
-		return nil, errors.Wrap(_crcErr, "Error parsing 'crc' field of Checksum")
+	// Simple Field (value)
+	_value, _valueErr := readBuffer.ReadByte("value")
+	if _valueErr != nil {
+		return nil, errors.Wrap(_valueErr, "Error parsing 'value' field of Checksum")
 	}
-	crc := _crc
+	value := _value
 
 	if closeErr := readBuffer.CloseContext("Checksum"); closeErr != nil {
 		return nil, errors.Wrap(closeErr, "Error closing for Checksum")
 	}
 
 	// Create the instance
-	return NewChecksum(crc), nil
+	return NewChecksum(value), nil
 }
 
 func (m *_Checksum) Serialize(writeBuffer utils.WriteBuffer) error {
@@ -128,11 +128,11 @@ func (m *_Checksum) Serialize(writeBuffer utils.WriteBuffer) error {
 		return errors.Wrap(pushErr, "Error pushing for Checksum")
 	}
 
-	// Simple Field (crc)
-	crc := byte(m.GetCrc())
-	_crcErr := writeBuffer.WriteByte("crc", (crc))
-	if _crcErr != nil {
-		return errors.Wrap(_crcErr, "Error serializing 'crc' field")
+	// Simple Field (value)
+	value := byte(m.GetValue())
+	_valueErr := writeBuffer.WriteByte("value", (value))
+	if _valueErr != nil {
+		return errors.Wrap(_valueErr, "Error serializing 'value' field")
 	}
 
 	if popErr := writeBuffer.PopContext("Checksum"); popErr != nil {
diff --git a/plc4go/protocols/cbus/readwrite/model/ExtendedFormatStatusReply.go b/plc4go/protocols/cbus/readwrite/model/ExtendedFormatStatusReply.go
index 481452da4..dd9f58bac 100644
--- a/plc4go/protocols/cbus/readwrite/model/ExtendedFormatStatusReply.go
+++ b/plc4go/protocols/cbus/readwrite/model/ExtendedFormatStatusReply.go
@@ -40,8 +40,6 @@ type ExtendedFormatStatusReply interface {
 	GetBlockStart() uint8
 	// GetStatusBytes returns StatusBytes (property field)
 	GetStatusBytes() []StatusByte
-	// GetCrc returns Crc (property field)
-	GetCrc() Checksum
 }
 
 // ExtendedFormatStatusReplyExactly can be used when we want exactly this type and not a type which fulfills ExtendedFormatStatusReply.
@@ -58,7 +56,6 @@ type _ExtendedFormatStatusReply struct {
 	Application  ApplicationIdContainer
 	BlockStart   uint8
 	StatusBytes  []StatusByte
-	Crc          Checksum
 }
 
 ///////////////////////////////////////////////////////////
@@ -86,18 +83,14 @@ func (m *_ExtendedFormatStatusReply) GetStatusBytes() []StatusByte {
 	return m.StatusBytes
 }
 
-func (m *_ExtendedFormatStatusReply) GetCrc() Checksum {
-	return m.Crc
-}
-
 ///////////////////////
 ///////////////////////
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
 // NewExtendedFormatStatusReply factory function for _ExtendedFormatStatusReply
-func NewExtendedFormatStatusReply(statusHeader ExtendedStatusHeader, coding StatusCoding, application ApplicationIdContainer, blockStart uint8, statusBytes []StatusByte, crc Checksum) *_ExtendedFormatStatusReply {
-	return &_ExtendedFormatStatusReply{StatusHeader: statusHeader, Coding: coding, Application: application, BlockStart: blockStart, StatusBytes: statusBytes, Crc: crc}
+func NewExtendedFormatStatusReply(statusHeader ExtendedStatusHeader, coding StatusCoding, application ApplicationIdContainer, blockStart uint8, statusBytes []StatusByte) *_ExtendedFormatStatusReply {
+	return &_ExtendedFormatStatusReply{StatusHeader: statusHeader, Coding: coding, Application: application, BlockStart: blockStart, StatusBytes: statusBytes}
 }
 
 // Deprecated: use the interface for direct cast
@@ -142,9 +135,6 @@ func (m *_ExtendedFormatStatusReply) GetLengthInBitsConditional(lastItem bool) u
 		}
 	}
 
-	// Simple field (crc)
-	lengthInBits += m.Crc.GetLengthInBits()
-
 	return lengthInBits
 }
 
@@ -230,25 +220,12 @@ func ExtendedFormatStatusReplyParse(readBuffer utils.ReadBuffer) (ExtendedFormat
 		return nil, errors.Wrap(closeErr, "Error closing for statusBytes")
 	}
 
-	// Simple Field (crc)
-	if pullErr := readBuffer.PullContext("crc"); pullErr != nil {
-		return nil, errors.Wrap(pullErr, "Error pulling for crc")
-	}
-	_crc, _crcErr := ChecksumParse(readBuffer)
-	if _crcErr != nil {
-		return nil, errors.Wrap(_crcErr, "Error parsing 'crc' field of ExtendedFormatStatusReply")
-	}
-	crc := _crc.(Checksum)
-	if closeErr := readBuffer.CloseContext("crc"); closeErr != nil {
-		return nil, errors.Wrap(closeErr, "Error closing for crc")
-	}
-
 	if closeErr := readBuffer.CloseContext("ExtendedFormatStatusReply"); closeErr != nil {
 		return nil, errors.Wrap(closeErr, "Error closing for ExtendedFormatStatusReply")
 	}
 
 	// Create the instance
-	return NewExtendedFormatStatusReply(statusHeader, coding, application, blockStart, statusBytes, crc), nil
+	return NewExtendedFormatStatusReply(statusHeader, coding, application, blockStart, statusBytes), nil
 }
 
 func (m *_ExtendedFormatStatusReply) Serialize(writeBuffer utils.WriteBuffer) error {
@@ -315,18 +292,6 @@ func (m *_ExtendedFormatStatusReply) Serialize(writeBuffer utils.WriteBuffer) er
 		return errors.Wrap(popErr, "Error popping for statusBytes")
 	}
 
-	// Simple Field (crc)
-	if pushErr := writeBuffer.PushContext("crc"); pushErr != nil {
-		return errors.Wrap(pushErr, "Error pushing for crc")
-	}
-	_crcErr := writeBuffer.WriteSerializable(m.GetCrc())
-	if popErr := writeBuffer.PopContext("crc"); popErr != nil {
-		return errors.Wrap(popErr, "Error popping for crc")
-	}
-	if _crcErr != nil {
-		return errors.Wrap(_crcErr, "Error serializing 'crc' field")
-	}
-
 	if popErr := writeBuffer.PopContext("ExtendedFormatStatusReply"); popErr != nil {
 		return errors.Wrap(popErr, "Error popping for ExtendedFormatStatusReply")
 	}
diff --git a/plc4go/protocols/cbus/readwrite/model/MonitoredSAL.go b/plc4go/protocols/cbus/readwrite/model/MonitoredSAL.go
index 60aef0cb7..51a8257d5 100644
--- a/plc4go/protocols/cbus/readwrite/model/MonitoredSAL.go
+++ b/plc4go/protocols/cbus/readwrite/model/MonitoredSAL.go
@@ -22,8 +22,6 @@ package model
 import (
 	"github.com/apache/plc4x/plc4go/internal/spi/utils"
 	"github.com/pkg/errors"
-	"github.com/rs/zerolog/log"
-	"io"
 )
 
 // Code generated by code-generation. DO NOT EDIT.
@@ -34,8 +32,6 @@ type MonitoredSAL interface {
 	utils.Serializable
 	// GetSalType returns SalType (property field)
 	GetSalType() byte
-	// GetCrc returns Crc (property field)
-	GetCrc() Checksum
 }
 
 // MonitoredSALExactly can be used when we want exactly this type and not a type which fulfills MonitoredSAL.
@@ -49,7 +45,6 @@ type MonitoredSALExactly interface {
 type _MonitoredSAL struct {
 	_MonitoredSALChildRequirements
 	SalType byte
-	Crc     Checksum
 
 	// Arguments.
 	CBusOptions CBusOptions
@@ -68,7 +63,7 @@ type MonitoredSALParent interface {
 
 type MonitoredSALChild interface {
 	utils.Serializable
-	InitializeParent(parent MonitoredSAL, salType byte, crc Checksum)
+	InitializeParent(parent MonitoredSAL, salType byte)
 	GetParent() *MonitoredSAL
 
 	GetTypeName() string
@@ -84,18 +79,14 @@ func (m *_MonitoredSAL) GetSalType() byte {
 	return m.SalType
 }
 
-func (m *_MonitoredSAL) GetCrc() Checksum {
-	return m.Crc
-}
-
 ///////////////////////
 ///////////////////////
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
 // NewMonitoredSAL factory function for _MonitoredSAL
-func NewMonitoredSAL(salType byte, crc Checksum, cBusOptions CBusOptions) *_MonitoredSAL {
-	return &_MonitoredSAL{SalType: salType, Crc: crc, CBusOptions: cBusOptions}
+func NewMonitoredSAL(salType byte, cBusOptions CBusOptions) *_MonitoredSAL {
+	return &_MonitoredSAL{SalType: salType, CBusOptions: cBusOptions}
 }
 
 // Deprecated: use the interface for direct cast
@@ -116,11 +107,6 @@ func (m *_MonitoredSAL) GetTypeName() string {
 func (m *_MonitoredSAL) GetParentLengthInBits() uint16 {
 	lengthInBits := uint16(0)
 
-	// Optional Field (crc)
-	if m.Crc != nil {
-		lengthInBits += m.Crc.GetLengthInBits()
-	}
-
 	return lengthInBits
 }
 
@@ -149,7 +135,7 @@ func MonitoredSALParse(readBuffer utils.ReadBuffer, cBusOptions CBusOptions) (Mo
 	// Switch Field (Depending on the discriminator values, passes the instantiation to a sub-type)
 	type MonitoredSALChildSerializeRequirement interface {
 		MonitoredSAL
-		InitializeParent(MonitoredSAL, byte, Checksum)
+		InitializeParent(MonitoredSAL, byte)
 		GetParent() MonitoredSAL
 	}
 	var _childTemp interface{}
@@ -168,34 +154,12 @@ func MonitoredSALParse(readBuffer utils.ReadBuffer, cBusOptions CBusOptions) (Mo
 	}
 	_child = _childTemp.(MonitoredSALChildSerializeRequirement)
 
-	// Optional Field (crc) (Can be skipped, if a given expression evaluates to false)
-	var crc Checksum = nil
-	if cBusOptions.GetSrchk() {
-		currentPos = positionAware.GetPos()
-		if pullErr := readBuffer.PullContext("crc"); pullErr != nil {
-			return nil, errors.Wrap(pullErr, "Error pulling for crc")
-		}
-		_val, _err := ChecksumParse(readBuffer)
-		switch {
-		case errors.Is(_err, utils.ParseAssertError{}) || errors.Is(_err, io.EOF):
-			log.Debug().Err(_err).Msg("Resetting position because optional threw an error")
-			readBuffer.Reset(currentPos)
-		case _err != nil:
-			return nil, errors.Wrap(_err, "Error parsing 'crc' field of MonitoredSAL")
-		default:
-			crc = _val.(Checksum)
-			if closeErr := readBuffer.CloseContext("crc"); closeErr != nil {
-				return nil, errors.Wrap(closeErr, "Error closing for crc")
-			}
-		}
-	}
-
 	if closeErr := readBuffer.CloseContext("MonitoredSAL"); closeErr != nil {
 		return nil, errors.Wrap(closeErr, "Error closing for MonitoredSAL")
 	}
 
 	// Finish initializing
-	_child.InitializeParent(_child, salType, crc)
+	_child.InitializeParent(_child, salType)
 	return _child, nil
 }
 
@@ -214,22 +178,6 @@ func (pm *_MonitoredSAL) SerializeParent(writeBuffer utils.WriteBuffer, child Mo
 		return errors.Wrap(_typeSwitchErr, "Error serializing sub-type field")
 	}
 
-	// Optional Field (crc) (Can be skipped, if the value is null)
-	var crc Checksum = nil
-	if m.GetCrc() != nil {
-		if pushErr := writeBuffer.PushContext("crc"); pushErr != nil {
-			return errors.Wrap(pushErr, "Error pushing for crc")
-		}
-		crc = m.GetCrc()
-		_crcErr := writeBuffer.WriteSerializable(crc)
-		if popErr := writeBuffer.PopContext("crc"); popErr != nil {
-			return errors.Wrap(popErr, "Error popping for crc")
-		}
-		if _crcErr != nil {
-			return errors.Wrap(_crcErr, "Error serializing 'crc' field")
-		}
-	}
-
 	if popErr := writeBuffer.PopContext("MonitoredSAL"); popErr != nil {
 		return errors.Wrap(popErr, "Error popping for MonitoredSAL")
 	}
diff --git a/plc4go/protocols/cbus/readwrite/model/MonitoredSALLongFormSmartMode.go b/plc4go/protocols/cbus/readwrite/model/MonitoredSALLongFormSmartMode.go
index 9a1f408f0..e9c74c200 100644
--- a/plc4go/protocols/cbus/readwrite/model/MonitoredSALLongFormSmartMode.go
+++ b/plc4go/protocols/cbus/readwrite/model/MonitoredSALLongFormSmartMode.go
@@ -80,9 +80,8 @@ type _MonitoredSALLongFormSmartMode struct {
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
-func (m *_MonitoredSALLongFormSmartMode) InitializeParent(parent MonitoredSAL, salType byte, crc Checksum) {
+func (m *_MonitoredSALLongFormSmartMode) InitializeParent(parent MonitoredSAL, salType byte) {
 	m.SalType = salType
-	m.Crc = crc
 }
 
 func (m *_MonitoredSALLongFormSmartMode) GetParent() MonitoredSAL {
@@ -151,7 +150,7 @@ func (m *_MonitoredSALLongFormSmartMode) GetIsUnitAddress() bool {
 ///////////////////////////////////////////////////////////
 
 // NewMonitoredSALLongFormSmartMode factory function for _MonitoredSALLongFormSmartMode
-func NewMonitoredSALLongFormSmartMode(terminatingByte uint32, unitAddress UnitAddress, bridgeAddress BridgeAddress, application ApplicationIdContainer, reservedByte *byte, replyNetwork ReplyNetwork, salData SALData, salType byte, crc Checksum, cBusOptions CBusOptions) *_MonitoredSALLongFormSmartMode {
+func NewMonitoredSALLongFormSmartMode(terminatingByte uint32, unitAddress UnitAddress, bridgeAddress BridgeAddress, application ApplicationIdContainer, reservedByte *byte, replyNetwork ReplyNetwork, salData SALData, salType byte, cBusOptions CBusOptions) *_MonitoredSALLongFormSmartMode {
 	_result := &_MonitoredSALLongFormSmartMode{
 		TerminatingByte: terminatingByte,
 		UnitAddress:     unitAddress,
@@ -160,7 +159,7 @@ func NewMonitoredSALLongFormSmartMode(terminatingByte uint32, unitAddress UnitAd
 		ReservedByte:    reservedByte,
 		ReplyNetwork:    replyNetwork,
 		SalData:         salData,
-		_MonitoredSAL:   NewMonitoredSAL(salType, crc, cBusOptions),
+		_MonitoredSAL:   NewMonitoredSAL(salType, cBusOptions),
 	}
 	_result._MonitoredSAL._MonitoredSALChildRequirements = _result
 	return _result
diff --git a/plc4go/protocols/cbus/readwrite/model/MonitoredSALShortFormBasicMode.go b/plc4go/protocols/cbus/readwrite/model/MonitoredSALShortFormBasicMode.go
index a829d298b..1d617134f 100644
--- a/plc4go/protocols/cbus/readwrite/model/MonitoredSALShortFormBasicMode.go
+++ b/plc4go/protocols/cbus/readwrite/model/MonitoredSALShortFormBasicMode.go
@@ -75,9 +75,8 @@ type _MonitoredSALShortFormBasicMode struct {
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
-func (m *_MonitoredSALShortFormBasicMode) InitializeParent(parent MonitoredSAL, salType byte, crc Checksum) {
+func (m *_MonitoredSALShortFormBasicMode) InitializeParent(parent MonitoredSAL, salType byte) {
 	m.SalType = salType
-	m.Crc = crc
 }
 
 func (m *_MonitoredSALShortFormBasicMode) GetParent() MonitoredSAL {
@@ -119,7 +118,7 @@ func (m *_MonitoredSALShortFormBasicMode) GetSalData() SALData {
 ///////////////////////////////////////////////////////////
 
 // NewMonitoredSALShortFormBasicMode factory function for _MonitoredSALShortFormBasicMode
-func NewMonitoredSALShortFormBasicMode(counts byte, bridgeCount BridgeCount, networkNumber NetworkNumber, noCounts *byte, application ApplicationIdContainer, salData SALData, salType byte, crc Checksum, cBusOptions CBusOptions) *_MonitoredSALShortFormBasicMode {
+func NewMonitoredSALShortFormBasicMode(counts byte, bridgeCount BridgeCount, networkNumber NetworkNumber, noCounts *byte, application ApplicationIdContainer, salData SALData, salType byte, cBusOptions CBusOptions) *_MonitoredSALShortFormBasicMode {
 	_result := &_MonitoredSALShortFormBasicMode{
 		Counts:        counts,
 		BridgeCount:   bridgeCount,
@@ -127,7 +126,7 @@ func NewMonitoredSALShortFormBasicMode(counts byte, bridgeCount BridgeCount, net
 		NoCounts:      noCounts,
 		Application:   application,
 		SalData:       salData,
-		_MonitoredSAL: NewMonitoredSAL(salType, crc, cBusOptions),
+		_MonitoredSAL: NewMonitoredSAL(salType, cBusOptions),
 	}
 	_result._MonitoredSAL._MonitoredSALChildRequirements = _result
 	return _result
diff --git a/plc4go/protocols/cbus/readwrite/model/Normal.go b/plc4go/protocols/cbus/readwrite/model/Normal.go
index a24196a81..bea065385 100644
--- a/plc4go/protocols/cbus/readwrite/model/Normal.go
+++ b/plc4go/protocols/cbus/readwrite/model/Normal.go
@@ -62,9 +62,8 @@ type _Normal struct {
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
-func (m *_Normal) InitializeParent(parent CBusPointToMultiPointCommand, peekedApplication byte, crc Checksum) {
+func (m *_Normal) InitializeParent(parent CBusPointToMultiPointCommand, peekedApplication byte) {
 	m.PeekedApplication = peekedApplication
-	m.Crc = crc
 }
 
 func (m *_Normal) GetParent() CBusPointToMultiPointCommand {
@@ -90,11 +89,11 @@ func (m *_Normal) GetSalData() SALData {
 ///////////////////////////////////////////////////////////
 
 // NewNormal factory function for _Normal
-func NewNormal(application ApplicationIdContainer, salData SALData, peekedApplication byte, crc Checksum, cBusOptions CBusOptions) *_Normal {
+func NewNormal(application ApplicationIdContainer, salData SALData, peekedApplication byte, cBusOptions CBusOptions) *_Normal {
 	_result := &_Normal{
 		Application:                   application,
 		SalData:                       salData,
-		_CBusPointToMultiPointCommand: NewCBusPointToMultiPointCommand(peekedApplication, crc, cBusOptions),
+		_CBusPointToMultiPointCommand: NewCBusPointToMultiPointCommand(peekedApplication, cBusOptions),
 	}
 	_result._CBusPointToMultiPointCommand._CBusPointToMultiPointCommandChildRequirements = _result
 	return _result
diff --git a/plc4go/protocols/cbus/readwrite/model/ReplyEncodedReply.go b/plc4go/protocols/cbus/readwrite/model/ReplyEncodedReply.go
index e555c44eb..bb87ced5a 100644
--- a/plc4go/protocols/cbus/readwrite/model/ReplyEncodedReply.go
+++ b/plc4go/protocols/cbus/readwrite/model/ReplyEncodedReply.go
@@ -33,6 +33,8 @@ type ReplyEncodedReply interface {
 	Reply
 	// GetEncodedReply returns EncodedReply (property field)
 	GetEncodedReply() EncodedReply
+	// GetChksum returns Chksum (property field)
+	GetChksum() Checksum
 	// GetPayloadLength returns PayloadLength (virtual field)
 	GetPayloadLength() uint16
 }
@@ -48,6 +50,7 @@ type ReplyEncodedReplyExactly interface {
 type _ReplyEncodedReply struct {
 	*_Reply
 	EncodedReply EncodedReply
+	Chksum       Checksum
 }
 
 ///////////////////////////////////////////////////////////
@@ -77,6 +80,10 @@ func (m *_ReplyEncodedReply) GetEncodedReply() EncodedReply {
 	return m.EncodedReply
 }
 
+func (m *_ReplyEncodedReply) GetChksum() Checksum {
+	return m.Chksum
+}
+
 ///////////////////////
 ///////////////////////
 ///////////////////////////////////////////////////////////
@@ -96,9 +103,10 @@ func (m *_ReplyEncodedReply) GetPayloadLength() uint16 {
 ///////////////////////////////////////////////////////////
 
 // NewReplyEncodedReply factory function for _ReplyEncodedReply
-func NewReplyEncodedReply(encodedReply EncodedReply, peekedByte byte, cBusOptions CBusOptions, replyLength uint16, requestContext RequestContext) *_ReplyEncodedReply {
+func NewReplyEncodedReply(encodedReply EncodedReply, chksum Checksum, peekedByte byte, cBusOptions CBusOptions, replyLength uint16, requestContext RequestContext) *_ReplyEncodedReply {
 	_result := &_ReplyEncodedReply{
 		EncodedReply: encodedReply,
+		Chksum:       chksum,
 		_Reply:       NewReply(peekedByte, cBusOptions, replyLength, requestContext),
 	}
 	_result._Reply._ReplyChildRequirements = _result
@@ -130,7 +138,10 @@ func (m *_ReplyEncodedReply) GetLengthInBitsConditional(lastItem bool) uint16 {
 	// A virtual field doesn't have any in- or output.
 
 	// Manual Field (encodedReply)
-	lengthInBits += uint16(int32(m.GetLengthInBytes()) * int32(int32(2)))
+	lengthInBits += uint16(int32(int32(int32(m.GetLengthInBytes())*int32(int32(2)))) * int32(int32(8)))
+
+	// Manual Field (chksum)
+	lengthInBits += uint16(int32(8))
 
 	return lengthInBits
 }
@@ -154,12 +165,19 @@ func ReplyEncodedReplyParse(readBuffer utils.ReadBuffer, cBusOptions CBusOptions
 	_ = payloadLength
 
 	// Manual Field (encodedReply)
-	_encodedReply, _encodedReplyErr := ReadEncodedReply(readBuffer, payloadLength, cBusOptions, requestContext)
+	_encodedReply, _encodedReplyErr := ReadEncodedReply(readBuffer, payloadLength, cBusOptions, requestContext, cBusOptions.GetSrchk())
 	if _encodedReplyErr != nil {
 		return nil, errors.Wrap(_encodedReplyErr, "Error parsing 'encodedReply' field of ReplyEncodedReply")
 	}
 	encodedReply := _encodedReply.(EncodedReply)
 
+	// Manual Field (chksum)
+	_chksum, _chksumErr := ReadAndValidateChecksum(readBuffer, encodedReply, cBusOptions.GetSrchk())
+	if _chksumErr != nil {
+		return nil, errors.Wrap(_chksumErr, "Error parsing 'chksum' field of ReplyEncodedReply")
+	}
+	chksum := _chksum.(Checksum)
+
 	if closeErr := readBuffer.CloseContext("ReplyEncodedReply"); closeErr != nil {
 		return nil, errors.Wrap(closeErr, "Error closing for ReplyEncodedReply")
 	}
@@ -167,6 +185,7 @@ func ReplyEncodedReplyParse(readBuffer utils.ReadBuffer, cBusOptions CBusOptions
 	// Create a partially initialized instance
 	_child := &_ReplyEncodedReply{
 		EncodedReply: encodedReply,
+		Chksum:       chksum,
 		_Reply: &_Reply{
 			CBusOptions:    cBusOptions,
 			ReplyLength:    replyLength,
@@ -195,6 +214,12 @@ func (m *_ReplyEncodedReply) Serialize(writeBuffer utils.WriteBuffer) error {
 			return errors.Wrap(_encodedReplyErr, "Error serializing 'encodedReply' field")
 		}
 
+		// Manual Field (chksum)
+		_chksumErr := CalculateChecksum(writeBuffer, m.GetEncodedReply(), m.CBusOptions.GetSrchk())
+		if _chksumErr != nil {
+			return errors.Wrap(_chksumErr, "Error serializing 'chksum' field")
+		}
+
 		if popErr := writeBuffer.PopContext("ReplyEncodedReply"); popErr != nil {
 			return errors.Wrap(popErr, "Error popping for ReplyEncodedReply")
 		}
diff --git a/plc4go/protocols/cbus/readwrite/model/RequestCommand.go b/plc4go/protocols/cbus/readwrite/model/RequestCommand.go
index af2c888fd..66906ada6 100644
--- a/plc4go/protocols/cbus/readwrite/model/RequestCommand.go
+++ b/plc4go/protocols/cbus/readwrite/model/RequestCommand.go
@@ -39,6 +39,8 @@ type RequestCommand interface {
 	Request
 	// GetCbusCommand returns CbusCommand (property field)
 	GetCbusCommand() CBusCommand
+	// GetChksum returns Chksum (property field)
+	GetChksum() Checksum
 	// GetAlpha returns Alpha (property field)
 	GetAlpha() Alpha
 }
@@ -54,6 +56,7 @@ type RequestCommandExactly interface {
 type _RequestCommand struct {
 	*_Request
 	CbusCommand CBusCommand
+	Chksum      Checksum
 	Alpha       Alpha
 
 	// Arguments.
@@ -91,6 +94,10 @@ func (m *_RequestCommand) GetCbusCommand() CBusCommand {
 	return m.CbusCommand
 }
 
+func (m *_RequestCommand) GetChksum() Checksum {
+	return m.Chksum
+}
+
 func (m *_RequestCommand) GetAlpha() Alpha {
 	return m.Alpha
 }
@@ -114,9 +121,10 @@ func (m *_RequestCommand) GetInitiator() byte {
 ///////////////////////////////////////////////////////////
 
 // NewRequestCommand factory function for _RequestCommand
-func NewRequestCommand(cbusCommand CBusCommand, alpha Alpha, peekedByte RequestType, startingCR *RequestType, resetMode *RequestType, secondPeek RequestType, termination RequestTermination, cBusOptions CBusOptions, messageLength uint16, payloadLength uint16) *_RequestCommand {
+func NewRequestCommand(cbusCommand CBusCommand, chksum Checksum, alpha Alpha, peekedByte RequestType, startingCR *RequestType, resetMode *RequestType, secondPeek RequestType, termination RequestTermination, cBusOptions CBusOptions, messageLength uint16, payloadLength uint16) *_RequestCommand {
 	_result := &_RequestCommand{
 		CbusCommand: cbusCommand,
+		Chksum:      chksum,
 		Alpha:       alpha,
 		_Request:    NewRequest(peekedByte, startingCR, resetMode, secondPeek, termination, cBusOptions, messageLength),
 	}
@@ -150,7 +158,10 @@ func (m *_RequestCommand) GetLengthInBitsConditional(lastItem bool) uint16 {
 	lengthInBits += 8
 
 	// Manual Field (cbusCommand)
-	lengthInBits += uint16(int32(m.GetLengthInBytes()) * int32(int32(2)))
+	lengthInBits += uint16(int32(int32(int32(m.GetLengthInBytes())*int32(int32(2)))) * int32(int32(8)))
+
+	// Manual Field (chksum)
+	lengthInBits += uint16(int32(8))
 
 	// Optional Field (alpha)
 	if m.Alpha != nil {
@@ -183,12 +194,19 @@ func RequestCommandParse(readBuffer utils.ReadBuffer, cBusOptions CBusOptions, m
 	}
 
 	// Manual Field (cbusCommand)
-	_cbusCommand, _cbusCommandErr := ReadCBusCommand(readBuffer, payloadLength, cBusOptions)
+	_cbusCommand, _cbusCommandErr := ReadCBusCommand(readBuffer, payloadLength, cBusOptions, cBusOptions.GetSrchk())
 	if _cbusCommandErr != nil {
 		return nil, errors.Wrap(_cbusCommandErr, "Error parsing 'cbusCommand' field of RequestCommand")
 	}
 	cbusCommand := _cbusCommand.(CBusCommand)
 
+	// Manual Field (chksum)
+	_chksum, _chksumErr := ReadAndValidateChecksum(readBuffer, cbusCommand, cBusOptions.GetSrchk())
+	if _chksumErr != nil {
+		return nil, errors.Wrap(_chksumErr, "Error parsing 'chksum' field of RequestCommand")
+	}
+	chksum := _chksum.(Checksum)
+
 	// Optional Field (alpha) (Can be skipped, if a given expression evaluates to false)
 	var alpha Alpha = nil
 	{
@@ -218,6 +236,7 @@ func RequestCommandParse(readBuffer utils.ReadBuffer, cBusOptions CBusOptions, m
 	// Create a partially initialized instance
 	_child := &_RequestCommand{
 		CbusCommand: cbusCommand,
+		Chksum:      chksum,
 		Alpha:       alpha,
 		_Request: &_Request{
 			CBusOptions:   cBusOptions,
@@ -248,6 +267,12 @@ func (m *_RequestCommand) Serialize(writeBuffer utils.WriteBuffer) error {
 			return errors.Wrap(_cbusCommandErr, "Error serializing 'cbusCommand' field")
 		}
 
+		// Manual Field (chksum)
+		_chksumErr := CalculateChecksum(writeBuffer, m.GetCbusCommand(), m.CBusOptions.GetSrchk())
+		if _chksumErr != nil {
+			return errors.Wrap(_chksumErr, "Error serializing 'chksum' field")
+		}
+
 		// Optional Field (alpha) (Can be skipped, if the value is null)
 		var alpha Alpha = nil
 		if m.GetAlpha() != nil {
diff --git a/plc4go/protocols/cbus/readwrite/model/RequestDirectCommandAccess.go b/plc4go/protocols/cbus/readwrite/model/RequestDirectCommandAccess.go
index a511b30a4..0c66428a0 100644
--- a/plc4go/protocols/cbus/readwrite/model/RequestDirectCommandAccess.go
+++ b/plc4go/protocols/cbus/readwrite/model/RequestDirectCommandAccess.go
@@ -140,7 +140,7 @@ func (m *_RequestDirectCommandAccess) GetLengthInBitsConditional(lastItem bool)
 	lengthInBits += 8
 
 	// Manual Field (calData)
-	lengthInBits += uint16(int32(m.GetLengthInBytes()) * int32(int32(2)))
+	lengthInBits += uint16(int32(int32(int32(m.GetLengthInBytes())*int32(int32(2)))) * int32(int32(8)))
 
 	return lengthInBits
 }
diff --git a/plc4go/protocols/cbus/readwrite/model/RequestObsolete.go b/plc4go/protocols/cbus/readwrite/model/RequestObsolete.go
index c8fb98cf2..6d7e508cc 100644
--- a/plc4go/protocols/cbus/readwrite/model/RequestObsolete.go
+++ b/plc4go/protocols/cbus/readwrite/model/RequestObsolete.go
@@ -149,7 +149,7 @@ func (m *_RequestObsolete) GetLengthInBitsConditional(lastItem bool) uint16 {
 	// A virtual field doesn't have any in- or output.
 
 	// Manual Field (calData)
-	lengthInBits += uint16(int32(m.GetLengthInBytes()) * int32(int32(2)))
+	lengthInBits += uint16(int32(int32(int32(m.GetLengthInBytes())*int32(int32(2)))) * int32(int32(8)))
 
 	// Optional Field (alpha)
 	if m.Alpha != nil {
diff --git a/plc4go/protocols/cbus/readwrite/model/StandardFormatStatusReply.go b/plc4go/protocols/cbus/readwrite/model/StandardFormatStatusReply.go
index 9c1318357..10ef6af85 100644
--- a/plc4go/protocols/cbus/readwrite/model/StandardFormatStatusReply.go
+++ b/plc4go/protocols/cbus/readwrite/model/StandardFormatStatusReply.go
@@ -38,8 +38,6 @@ type StandardFormatStatusReply interface {
 	GetBlockStart() uint8
 	// GetStatusBytes returns StatusBytes (property field)
 	GetStatusBytes() []StatusByte
-	// GetCrc returns Crc (property field)
-	GetCrc() Checksum
 }
 
 // StandardFormatStatusReplyExactly can be used when we want exactly this type and not a type which fulfills StandardFormatStatusReply.
@@ -55,7 +53,6 @@ type _StandardFormatStatusReply struct {
 	Application  ApplicationIdContainer
 	BlockStart   uint8
 	StatusBytes  []StatusByte
-	Crc          Checksum
 }
 
 ///////////////////////////////////////////////////////////
@@ -79,18 +76,14 @@ func (m *_StandardFormatStatusReply) GetStatusBytes() []StatusByte {
 	return m.StatusBytes
 }
 
-func (m *_StandardFormatStatusReply) GetCrc() Checksum {
-	return m.Crc
-}
-
 ///////////////////////
 ///////////////////////
 ///////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////
 
 // NewStandardFormatStatusReply factory function for _StandardFormatStatusReply
-func NewStandardFormatStatusReply(statusHeader StatusHeader, application ApplicationIdContainer, blockStart uint8, statusBytes []StatusByte, crc Checksum) *_StandardFormatStatusReply {
-	return &_StandardFormatStatusReply{StatusHeader: statusHeader, Application: application, BlockStart: blockStart, StatusBytes: statusBytes, Crc: crc}
+func NewStandardFormatStatusReply(statusHeader StatusHeader, application ApplicationIdContainer, blockStart uint8, statusBytes []StatusByte) *_StandardFormatStatusReply {
+	return &_StandardFormatStatusReply{StatusHeader: statusHeader, Application: application, BlockStart: blockStart, StatusBytes: statusBytes}
 }
 
 // Deprecated: use the interface for direct cast
@@ -132,9 +125,6 @@ func (m *_StandardFormatStatusReply) GetLengthInBitsConditional(lastItem bool) u
 		}
 	}
 
-	// Simple field (crc)
-	lengthInBits += m.Crc.GetLengthInBits()
-
 	return lengthInBits
 }
 
@@ -207,25 +197,12 @@ func StandardFormatStatusReplyParse(readBuffer utils.ReadBuffer) (StandardFormat
 		return nil, errors.Wrap(closeErr, "Error closing for statusBytes")
 	}
 
-	// Simple Field (crc)
-	if pullErr := readBuffer.PullContext("crc"); pullErr != nil {
-		return nil, errors.Wrap(pullErr, "Error pulling for crc")
-	}
-	_crc, _crcErr := ChecksumParse(readBuffer)
-	if _crcErr != nil {
-		return nil, errors.Wrap(_crcErr, "Error parsing 'crc' field of StandardFormatStatusReply")
-	}
-	crc := _crc.(Checksum)
-	if closeErr := readBuffer.CloseContext("crc"); closeErr != nil {
-		return nil, errors.Wrap(closeErr, "Error closing for crc")
-	}
-
 	if closeErr := readBuffer.CloseContext("StandardFormatStatusReply"); closeErr != nil {
 		return nil, errors.Wrap(closeErr, "Error closing for StandardFormatStatusReply")
 	}
 
 	// Create the instance
-	return NewStandardFormatStatusReply(statusHeader, application, blockStart, statusBytes, crc), nil
+	return NewStandardFormatStatusReply(statusHeader, application, blockStart, statusBytes), nil
 }
 
 func (m *_StandardFormatStatusReply) Serialize(writeBuffer utils.WriteBuffer) error {
@@ -280,18 +257,6 @@ func (m *_StandardFormatStatusReply) Serialize(writeBuffer utils.WriteBuffer) er
 		return errors.Wrap(popErr, "Error popping for statusBytes")
 	}
 
-	// Simple Field (crc)
-	if pushErr := writeBuffer.PushContext("crc"); pushErr != nil {
-		return errors.Wrap(pushErr, "Error pushing for crc")
-	}
-	_crcErr := writeBuffer.WriteSerializable(m.GetCrc())
-	if popErr := writeBuffer.PopContext("crc"); popErr != nil {
-		return errors.Wrap(popErr, "Error popping for crc")
-	}
-	if _crcErr != nil {
-		return errors.Wrap(_crcErr, "Error serializing 'crc' field")
-	}
-
 	if popErr := writeBuffer.PopContext("StandardFormatStatusReply"); popErr != nil {
 		return errors.Wrap(popErr, "Error popping for StandardFormatStatusReply")
 	}
diff --git a/plc4go/protocols/cbus/readwrite/model/StaticHelper.go b/plc4go/protocols/cbus/readwrite/model/StaticHelper.go
index 132c52737..0810292d8 100644
--- a/plc4go/protocols/cbus/readwrite/model/StaticHelper.go
+++ b/plc4go/protocols/cbus/readwrite/model/StaticHelper.go
@@ -21,17 +21,64 @@ package model
 
 import (
 	"encoding/hex"
+	"github.com/apache/plc4x/plc4go/internal/spi"
 	"github.com/apache/plc4x/plc4go/internal/spi/utils"
 	"github.com/pkg/errors"
 	"github.com/rs/zerolog/log"
 )
 
+func ReadAndValidateChecksum(readBuffer utils.ReadBuffer, message spi.Message, srchk bool) (Checksum, error) {
+	if !srchk {
+		return nil, nil
+	}
+	hexBytes, err := readBytesFromHex("chksum", readBuffer, 2, false)
+	if err != nil {
+		return nil, errors.Wrap(err, "Unable to calculate checksum")
+	}
+	checksum := hexBytes[0]
+	actualChecksum, err := getChecksum(message)
+	if err != nil {
+		return nil, errors.Wrap(err, "Unable to calculate checksum")
+	}
+	if checksum != actualChecksum {
+		return nil, errors.Errorf("Expected checksum 0x%x doesn't match actual checksum 0x%x", checksum, actualChecksum)
+	}
+	return NewChecksum(checksum), nil
+}
+
+func CalculateChecksum(writeBuffer utils.WriteBuffer, message spi.Message, srchk bool) error {
+	if !srchk {
+		// Nothing to do when srchck is disabled
+		return nil
+	}
+	checksum, err := getChecksum(message)
+	if err != nil {
+		return errors.Wrap(err, "Unable to calculate checksum")
+	}
+	return writeToHex("chksum", writeBuffer, []byte{checksum})
+}
+
+func getChecksum(message spi.Message) (byte, error) {
+	checksum := byte(0x0)
+	checksumWriteBuffer := utils.NewWriteBufferByteBased()
+	err := message.Serialize(checksumWriteBuffer)
+	if err != nil {
+		return 0, errors.Wrap(err, "Error serializing")
+	}
+	for _, aByte := range checksumWriteBuffer.GetBytes() {
+		checksum += aByte
+	}
+	checksum = ^checksum
+	checksum++
+	return checksum, nil
+}
+
 func WriteCBusCommand(writeBuffer utils.WriteBuffer, cbusCommand CBusCommand) error {
-	return writeToHex("cbusCommand", writeBuffer, cbusCommand)
+	return writeSerializableToHex("cbusCommand", writeBuffer, cbusCommand)
 }
 
-func ReadCBusCommand(readBuffer utils.ReadBuffer, payloadLength uint16, cBusOptions CBusOptions) (CBusCommand, error) {
-	rawBytes, err := readBytesFromHex("cbusCommand", readBuffer, payloadLength)
+func ReadCBusCommand(readBuffer utils.ReadBuffer, payloadLength uint16, cBusOptions CBusOptions, srchk bool) (CBusCommand, error) {
+	rawBytes, err := readBytesFromHex("cbusCommand", readBuffer, payloadLength, srchk)
 	if err != nil {
 		return nil, errors.Wrap(err, "Error getting hex")
 	}
@@ -39,11 +86,11 @@ func ReadCBusCommand(readBuffer utils.ReadBuffer, payloadLength uint16, cBusOpti
 }
 
 func WriteEncodedReply(writeBuffer utils.WriteBuffer, encodedReply EncodedReply) error {
-	return writeToHex("encodedReply", writeBuffer, encodedReply)
+	return writeSerializableToHex("encodedReply", writeBuffer, encodedReply)
 }
 
-func ReadEncodedReply(readBuffer utils.ReadBuffer, payloadLength uint16, options CBusOptions, requestContext RequestContext) (EncodedReply, error) {
-	rawBytes, err := readBytesFromHex("encodedReply", readBuffer, payloadLength)
+func ReadEncodedReply(readBuffer utils.ReadBuffer, payloadLength uint16, options CBusOptions, requestContext RequestContext, srchk bool) (EncodedReply, error) {
+	rawBytes, err := readBytesFromHex("encodedReply", readBuffer, payloadLength, srchk)
 	if err != nil {
 		return nil, errors.Wrap(err, "Error getting hex")
 	}
@@ -51,18 +98,18 @@ func ReadEncodedReply(readBuffer utils.ReadBuffer, payloadLength uint16, options
 }
 
 func WriteCALData(writeBuffer utils.WriteBuffer, calData CALData) error {
-	return writeToHex("calData", writeBuffer, calData)
+	return writeSerializableToHex("calData", writeBuffer, calData)
 }
 
 func ReadCALData(readBuffer utils.ReadBuffer, payloadLength uint16) (CALData, error) {
-	rawBytes, err := readBytesFromHex("calData", readBuffer, payloadLength)
+	rawBytes, err := readBytesFromHex("calData", readBuffer, payloadLength, false)
 	if err != nil {
 		return nil, errors.Wrap(err, "Error getting hex")
 	}
 	return CALDataParse(utils.NewReadBufferByteBased(rawBytes), nil)
 }
 
-func readBytesFromHex(logicalName string, readBuffer utils.ReadBuffer, payloadLength uint16) ([]byte, error) {
+func readBytesFromHex(logicalName string, readBuffer utils.ReadBuffer, payloadLength uint16, srchk bool) ([]byte, error) {
 	if payloadLength == 0 {
 		return nil, errors.New("Length is 0")
 	}
@@ -76,6 +123,11 @@ func readBytesFromHex(logicalName string, readBuffer utils.ReadBuffer, payloadLe
 		readBuffer.Reset(readBuffer.GetPos() - 1)
 		hexBytes = hexBytes[:len(hexBytes)-1]
 	}
+	if srchk {
+		// We need to reset the last to hex bytes
+		readBuffer.Reset(readBuffer.GetPos() - 2)
+		hexBytes = hexBytes[:len(hexBytes)-2]
+	}
 	rawBytes := make([]byte, hex.DecodedLen(len(hexBytes)))
 	n, err := hex.Decode(rawBytes, hexBytes)
 	if err != nil {
@@ -85,13 +137,17 @@ func readBytesFromHex(logicalName string, readBuffer utils.ReadBuffer, payloadLe
 	return rawBytes, nil
 }
 
-func writeToHex(logicalName string, writeBuffer utils.WriteBuffer, serializable utils.Serializable) error {
+func writeSerializableToHex(logicalName string, writeBuffer utils.WriteBuffer, serializable utils.Serializable) error {
 	wbbb := utils.NewWriteBufferByteBased()
 	err := serializable.Serialize(wbbb)
 	if err != nil {
 		return errors.Wrap(err, "Error serializing")
 	}
 	bytesToWrite := wbbb.GetBytes()
+	return writeToHex(logicalName, writeBuffer, bytesToWrite)
+}
+
+func writeToHex(logicalName string, writeBuffer utils.WriteBuffer, bytesToWrite []byte) error {
 	hexBytes := make([]byte, hex.EncodedLen(len(bytesToWrite)))
 	// usually you use hex.Encode but we want the encoding in uppercase
 	//n := hex.Encode(hexBytes, wbbb.GetBytes())
diff --git a/plc4j/drivers/c-bus/src/main/java/org/apache/plc4x/java/cbus/readwrite/utils/StaticHelper.java b/plc4j/drivers/c-bus/src/main/java/org/apache/plc4x/java/cbus/readwrite/utils/StaticHelper.java
index 9a7082e80..6f58d1aac 100644
--- a/plc4j/drivers/c-bus/src/main/java/org/apache/plc4x/java/cbus/readwrite/utils/StaticHelper.java
+++ b/plc4j/drivers/c-bus/src/main/java/org/apache/plc4x/java/cbus/readwrite/utils/StaticHelper.java
@@ -22,41 +22,76 @@ import org.apache.commons.codec.DecoderException;
 import org.apache.commons.codec.binary.Hex;
 import org.apache.plc4x.java.cbus.readwrite.*;
 import org.apache.plc4x.java.spi.generation.*;
-import org.apache.plc4x.java.spi.utils.Serializable;
 
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
 public class StaticHelper {
 
+    public static Checksum readAndValidateChecksum(ReadBuffer readBuffer, Message message, boolean srchk) throws ParseException {
+        if (!srchk) {
+            return null;
+        }
+        byte checksum = readBytesFromHex("chksum", readBuffer, 2, false)[0];
+        try {
+            byte actualChecksum = getChecksum(message);
+            if (checksum != actualChecksum) {
+                throw new ParseException(String.format("Expected checksum 0x%x doesn't match actual checksum 0x%x", checksum, actualChecksum));
+            }
+        } catch (SerializationException e) {
+            throw new ParseException("Unable to calculate checksum", e);
+        }
+        return new Checksum(checksum);
+    }
+
+    public static void calculateChecksum(WriteBuffer writeBuffer, Message message, boolean srchk) throws SerializationException {
+        if (!srchk) {
+            // Nothing to do when srchck is disabled
+            return;
+        }
+        writeToHex("chksum", writeBuffer, new byte[]{getChecksum(message)});
+    }
+
+    private static byte getChecksum(Message message) throws SerializationException {
+        byte checksum = 0x0;
+        WriteBufferByteBased checksumWriteBuffer = new WriteBufferByteBased(message.getLengthInBytes());
+        message.serialize(checksumWriteBuffer);
+        for (byte aByte : checksumWriteBuffer.getBytes()) {
+            checksum += aByte;
+        }
+        checksum = (byte) ~checksum;
+        checksum++;
+        return checksum;
+    }
+
     public static void writeCBusCommand(WriteBuffer writeBuffer, CBusCommand cbusCommand) throws SerializationException {
-        writeToHex("cbusCommand", writeBuffer, cbusCommand, cbusCommand.getLengthInBytes());
+        writeToHex("cbusCommand", writeBuffer, cbusCommand);
     }
 
-    public static CBusCommand readCBusCommand(ReadBuffer readBuffer, Integer payloadLength, CBusOptions cBusOptions) throws ParseException {
-        byte[] rawBytes = readBytesFromHex("cbusCommand", readBuffer, payloadLength);
+    public static CBusCommand readCBusCommand(ReadBuffer readBuffer, int payloadLength, CBusOptions cBusOptions, boolean srchk) throws ParseException {
+        byte[] rawBytes = readBytesFromHex("cbusCommand", readBuffer, payloadLength, srchk);
         return CBusCommand.staticParse(new ReadBufferByteBased(rawBytes), cBusOptions);
     }
 
     public static void writeEncodedReply(WriteBuffer writeBuffer, EncodedReply encodedReply) throws SerializationException {
-        writeToHex("encodedReply", writeBuffer, encodedReply, encodedReply.getLengthInBytes());
+        writeToHex("encodedReply", writeBuffer, encodedReply);
     }
 
-    public static EncodedReply readEncodedReply(ReadBuffer readBuffer, Integer payloadLength, CBusOptions cBusOptions, RequestContext requestContext) throws ParseException {
-        byte[] rawBytes = readBytesFromHex("encodedReply", readBuffer, payloadLength);
+    public static EncodedReply readEncodedReply(ReadBuffer readBuffer, int payloadLength, CBusOptions cBusOptions, RequestContext requestContext, boolean srchk) throws ParseException {
+        byte[] rawBytes = readBytesFromHex("encodedReply", readBuffer, payloadLength, srchk);
         return EncodedReply.staticParse(new ReadBufferByteBased(rawBytes), cBusOptions, requestContext);
     }
 
     public static void writeCALData(WriteBuffer writeBuffer, CALData calData) throws SerializationException {
-        writeToHex("calData", writeBuffer, calData, calData.getLengthInBytes());
+        writeToHex("calData", writeBuffer, calData);
     }
 
     public static CALData readCALData(ReadBuffer readBuffer, Integer payloadLength) throws ParseException {
-        byte[] rawBytes = readBytesFromHex("calData", readBuffer, payloadLength);
+        byte[] rawBytes = readBytesFromHex("calData", readBuffer, payloadLength, false);
         return CALData.staticParse(new ReadBufferByteBased(rawBytes), (RequestContext) null);
     }
 
-    private static byte[] readBytesFromHex(String logicalName, ReadBuffer readBuffer, Integer payloadLength) throws ParseException {
+    private static byte[] readBytesFromHex(String logicalName, ReadBuffer readBuffer, int payloadLength, boolean srchk) throws ParseException {
         if (payloadLength == 0) {
             throw new ParseException("Length is 0");
         }
@@ -67,6 +102,11 @@ public class StaticHelper {
             readBuffer.reset(readBuffer.getPos() - 1);
             hexBytes = Arrays.copyOf(hexBytes, hexBytes.length - 1);
         }
+        if (srchk) {
+            // We need to reset the last to hex bytes
+            readBuffer.reset(readBuffer.getPos() - 2);
+            hexBytes = Arrays.copyOf(hexBytes, hexBytes.length - 2);
+        }
         byte[] rawBytes;
         try {
             rawBytes = Hex.decodeHex(new String(hexBytes));
@@ -76,11 +116,15 @@ public class StaticHelper {
         return rawBytes;
     }
 
-    private static void writeToHex(String logicalName, WriteBuffer writeBuffer, Serializable serializable, int lengthInBytes) throws SerializationException {
+    private static void writeToHex(String logicalName, WriteBuffer writeBuffer, Message message) throws SerializationException {
         // TODO: maybe we use a writeBuffer hex based
-        WriteBufferByteBased payloadWriteBuffer = new WriteBufferByteBased(lengthInBytes * 2);
-        serializable.serialize(payloadWriteBuffer);
-        byte[] hexBytes = Hex.encodeHexString(payloadWriteBuffer.getBytes(), false).getBytes(StandardCharsets.UTF_8);
+        WriteBufferByteBased payloadWriteBuffer = new WriteBufferByteBased(message.getLengthInBytes() * 2);
+        message.serialize(payloadWriteBuffer);
+        writeToHex(logicalName, writeBuffer, payloadWriteBuffer.getBytes());
+    }
+
+    private static void writeToHex(String logicalName, WriteBuffer writeBuffer, byte[] bytes) throws SerializationException {
+        byte[] hexBytes = Hex.encodeHexString(bytes, false).getBytes(StandardCharsets.UTF_8);
         writeBuffer.writeByteArray(logicalName, hexBytes);
     }
 
@@ -237,5 +281,4 @@ public class StaticHelper {
             readBuffer.reset(oldPos);
         }
     }
-
 }
diff --git a/plc4j/drivers/c-bus/src/test/java/org/apache/plc4x/java/cbus/RandomPackagesTest.java b/plc4j/drivers/c-bus/src/test/java/org/apache/plc4x/java/cbus/RandomPackagesTest.java
index 3abf3a739..555567403 100644
--- a/plc4j/drivers/c-bus/src/test/java/org/apache/plc4x/java/cbus/RandomPackagesTest.java
+++ b/plc4j/drivers/c-bus/src/test/java/org/apache/plc4x/java/cbus/RandomPackagesTest.java
@@ -228,7 +228,7 @@ public class RandomPackagesTest {
     void statusRequestBinaryState() throws Exception {
         byte[] bytes = "\\05FF00FAFF00v\r".getBytes(StandardCharsets.UTF_8);
         ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-        cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
+        cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, false);
         CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
         assertThat(msg).isNotNull();
         System.out.println(msg);
@@ -264,7 +264,7 @@ public class RandomPackagesTest {
     void WriteCommand() throws Exception {
         byte[] bytes = "\\46310900A400410600r\r".getBytes(StandardCharsets.UTF_8);
         ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-        cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
+        cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, false);
         CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
         assertThat(msg).isNotNull();
         System.out.println(msg);
@@ -375,7 +375,6 @@ public class RandomPackagesTest {
     void SetHvacLevel() throws Exception {
         byte[] bytes = "0531AC0036040108FF0000DC\r\n".getBytes(StandardCharsets.UTF_8);
         ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-        cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
         requestContext = new RequestContext(false, false, false);
         CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
         assertThat(msg).isNotNull();
diff --git a/plc4j/drivers/c-bus/src/test/java/org/apache/plc4x/java/cbus/ReferenceTest.java b/plc4j/drivers/c-bus/src/test/java/org/apache/plc4x/java/cbus/ReferenceTest.java
index a1f0d68dc..4959ede87 100644
--- a/plc4j/drivers/c-bus/src/test/java/org/apache/plc4x/java/cbus/ReferenceTest.java
+++ b/plc4j/drivers/c-bus/src/test/java/org/apache/plc4x/java/cbus/ReferenceTest.java
@@ -244,10 +244,11 @@ public class ReferenceTest {
 
             @Test
             void calReplyNormal() throws Exception {
-                byte[] bytes = Hex.decodeHex("8902312E322E363620200A");
+                byte[] bytes = "8902312E322E363620200A\r\n".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
+                requestContext = new RequestContext(true, false, false);
                 cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
-                CALReply msg = CALReplyShort.staticParse(readBufferByteBased, cBusOptions, requestContext);
+                CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
                 assertMessageMatches(bytes, msg);
@@ -255,10 +256,13 @@ public class ReferenceTest {
 
             @Test
             void calReplySmart() throws Exception {
-                byte[] bytes = Hex.decodeHex("860593008902312E322E363620207F");
+                // TODO: seems like the checksum is wrong here???
+                //byte[] bytes = "860593008902312E322E363620207F\r\n".getBytes(StandardCharsets.UTF_8);
+                byte[] bytes = "860593008902312E322E36362020EC\r\n".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
+                requestContext = new RequestContext(true, false, false);
                 cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
-                CALReply msg = CALReplyLong.staticParse(readBufferByteBased, cBusOptions, requestContext);
+                CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
                 assertMessageMatches(bytes, msg);
@@ -340,9 +344,11 @@ public class ReferenceTest {
         // 7.3
         @Test
         void StandardFormatStatusReply1() throws Exception {
-            byte[] bytes = Hex.decodeHex("D8380068AA0140550550001000000014000000000000000000CF");
+            byte[] bytes = "D8380068AA0140550550001000000014000000000000000000CF\r\n".getBytes(StandardCharsets.UTF_8);
             ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-            StandardFormatStatusReply msg = StandardFormatStatusReply.staticParse(readBufferByteBased, false);
+            requestContext = new RequestContext(false, true, false);
+            cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
+            CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
             assertThat(msg).isNotNull();
             System.out.println(msg);
             assertMessageMatches(bytes, msg);
@@ -350,9 +356,11 @@ public class ReferenceTest {
 
         @Test
         void StandardFormatStatusReply2() throws Exception {
-            byte[] bytes = Hex.decodeHex("D838580000000000000000000000000000000000000000000098");
+            byte[] bytes = "D838580000000000000000000000000000000000000000000098\r\n".getBytes(StandardCharsets.UTF_8);
             ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-            StandardFormatStatusReply msg = StandardFormatStatusReply.staticParse(readBufferByteBased, false);
+            requestContext = new RequestContext(false, true, false);
+            cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
+            CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
             assertThat(msg).isNotNull();
             System.out.println(msg);
             assertMessageMatches(bytes, msg);
@@ -360,9 +368,11 @@ public class ReferenceTest {
 
         @Test
         void StandardFormatStatusReply3() throws Exception {
-            byte[] bytes = Hex.decodeHex("D638B000000000FF00000000000000000000000000000043");
+            byte[] bytes = "D638B000000000FF00000000000000000000000000000043\r\n".getBytes(StandardCharsets.UTF_8);
             ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-            StandardFormatStatusReply msg = StandardFormatStatusReply.staticParse(readBufferByteBased, false);
+            requestContext = new RequestContext(false, true, false);
+            cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
+            CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
             assertThat(msg).isNotNull();
             System.out.println(msg);
             assertMessageMatches(bytes, msg);
@@ -371,9 +381,11 @@ public class ReferenceTest {
         // 7.4
         @Test
         void ExtendedFormatStatusReply1() throws Exception {
-            byte[] bytes = Hex.decodeHex("F9073800AAAA000095990000000005555000000000005555555548");
+            byte[] bytes = "F9073800AAAA000095990000000005555000000000005555555548\r\n".getBytes(StandardCharsets.UTF_8);
             ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-            ExtendedFormatStatusReply msg = ExtendedFormatStatusReply.staticParse(readBufferByteBased, false);
+            requestContext = new RequestContext(false, true, false);
+            cBusOptions = new CBusOptions(false, false, false, true, false, false, false, false, true);
+            CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
             assertThat(msg).isNotNull();
             System.out.println(msg);
             assertMessageMatches(bytes, msg);
@@ -381,9 +393,11 @@ public class ReferenceTest {
 
         @Test
         void ExtendedFormatStatusReply2() throws Exception {
-            byte[] bytes = Hex.decodeHex("F907380B0000000000005555000000000000000000000000000013");
+            byte[] bytes = "F907380B0000000000005555000000000000000000000000000013\r\n".getBytes(StandardCharsets.UTF_8);
             ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-            ExtendedFormatStatusReply msg = ExtendedFormatStatusReply.staticParse(readBufferByteBased, false);
+            requestContext = new RequestContext(false, true, false);
+            cBusOptions = new CBusOptions(false, false, false, true, false, false, false, false, true);
+            CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
             assertThat(msg).isNotNull();
             System.out.println(msg);
             assertMessageMatches(bytes, msg);
@@ -391,9 +405,11 @@ public class ReferenceTest {
 
         @Test
         void ExtendedFormatStatusReply3() throws Exception {
-            byte[] bytes = Hex.decodeHex("f70738160000000000000000000000000000000000000000B4");
+            byte[] bytes = "F70738160000000000000000000000000000000000000000B4\r\n".getBytes(StandardCharsets.UTF_8);
             ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-            ExtendedFormatStatusReply msg = ExtendedFormatStatusReply.staticParse(readBufferByteBased, false);
+            requestContext = new RequestContext(false, true, false);
+            cBusOptions = new CBusOptions(false, false, false, true, false, false, false, false, true);
+            CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
             assertThat(msg).isNotNull();
             System.out.println(msg);
             assertMessageMatches(bytes, msg);
@@ -429,6 +445,7 @@ public class ReferenceTest {
                 byte[] bytes = "D83800A8AA02000000000000000000000000000000000000009C\r\n".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
                 requestContext = new RequestContext(false, true, false);
+                cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
@@ -441,6 +458,7 @@ public class ReferenceTest {
             void LightningStatusReply2() throws Exception {
                 byte[] bytes = "D838580000000000000000000000000000000000000000000098\r\n".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
+                cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
@@ -452,6 +470,7 @@ public class ReferenceTest {
             void LightningStatusReply3() throws Exception {
                 byte[] bytes = "D638B0000000000000000000000000000000000000000042\r\n".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
+                cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
@@ -486,7 +505,9 @@ public class ReferenceTest {
 
             @Test
             void LightningStatusReply6() throws Exception {
-                byte[] bytes = "86999900F60038B000000000000000000000000000000000000000008F\r\n".getBytes(StandardCharsets.UTF_8);
+                // TODO: wrong checksum in this example???
+                //byte[] bytes = "86999900F60038B000000000000000000000000000000000000000008F\r\n".getBytes(StandardCharsets.UTF_8);
+                byte[] bytes = "86999900F60038B000000000000000000000000000000000000000006A\r\n".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
                 cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, true, requestContext, cBusOptions, bytes.length);
@@ -607,15 +628,16 @@ public class ReferenceTest {
     @Nested
     class CBusQuickStartGuideTest {
 
-        // 4.2.9.1
+        // 4.3
         @Test
-        void pointToPointCommandDirect() throws Exception {
-            byte[] bytes = "\\0538007902D4\r".getBytes(StandardCharsets.UTF_8);
+        void checksums() throws Exception {
+            byte[] bytes = "\\0538007988C2g\r".getBytes(StandardCharsets.UTF_8);
             ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
             cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
             CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
             assertThat(msg).isNotNull();
             System.out.println(msg);
+            System.out.println(((RequestCommand) ((CBusMessageToServer) msg).getRequest()).getCbusCommand());
             assertMessageMatches(bytes, msg);
         }
 
@@ -633,7 +655,6 @@ public class ReferenceTest {
             void StartDynamicIcon() throws Exception {
                 byte[] bytes = "\\053800A412080020\r".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
@@ -645,7 +666,6 @@ public class ReferenceTest {
             void IconBitmap() throws Exception {
                 byte[] bytes = "\\053800A412080021\r".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
@@ -657,7 +677,6 @@ public class ReferenceTest {
             void CompleteDynamicIcon() throws Exception {
                 byte[] bytes = "\\053800A412080022\r".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
@@ -672,7 +691,6 @@ public class ReferenceTest {
                 void StartDynamicIcon() throws Exception {
                     byte[] bytes = "\\053800A401080020\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -684,7 +702,6 @@ public class ReferenceTest {
                 void IconHeader() throws Exception {
                     byte[] bytes = "\\053800A80104CA00130C0600\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -696,7 +713,6 @@ public class ReferenceTest {
                 void AppendDynamicIcon() throws Exception {
                     byte[] bytes = "\\053800A401080021\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -708,7 +724,6 @@ public class ReferenceTest {
                 void WriteIconBitmapData1() throws Exception {
                     byte[] bytes = "\\053800A80104AAF05500FF50\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -720,7 +735,6 @@ public class ReferenceTest {
                 void WriteIconBitmapData2() throws Exception {
                     byte[] bytes = "\\053800A801040000F0F00F00\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -732,7 +746,6 @@ public class ReferenceTest {
                 void useDynamicIcon() throws Exception {
                     byte[] bytes = "\\053800A401080022\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -744,7 +757,6 @@ public class ReferenceTest {
                 void displayIcon() throws Exception {
                     byte[] bytes = "\\053800A60102CA010013\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -991,7 +1003,9 @@ public class ReferenceTest {
 
             @Test
             void RemoteTrigger() throws Exception {
-                byte[] bytes = "\\035609CB02378216\r".getBytes(StandardCharsets.UTF_8);
+                // TODO: seems like the checksum is wrong here again...
+                //byte[] bytes = "\\035609CB02378216\r".getBytes(StandardCharsets.UTF_8);
+                byte[] bytes = "\\035609CB02378218\r".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
                 cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
@@ -1015,7 +1029,6 @@ public class ReferenceTest {
             void temperatureBroadcast() throws Exception {
                 byte[] bytes = "\\051900020564\r".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
@@ -1144,7 +1157,6 @@ public class ReferenceTest {
             void outputARequestRefreshCommandFixedQuestionMark() throws Exception {
                 byte[] bytes = "\\05DF001103\r".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
@@ -1189,7 +1201,7 @@ public class ReferenceTest {
 
             @Test
             void LineOffHookFixedQuestionMark() throws Exception {
-                byte[] bytes = "\\05E000AC020130333935323734333231FD\r".getBytes(StandardCharsets.UTF_8);
+                byte[] bytes = "\\05E000AC02013033393532373433323168\r".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
                 cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
@@ -1215,7 +1227,6 @@ public class ReferenceTest {
             void AllOk() throws Exception {
                 byte[] bytes = "\\05CE0015FF20DE0000\r".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
@@ -1228,7 +1239,6 @@ public class ReferenceTest {
             void MinorFailure() throws Exception {
                 byte[] bytes = "\\05CE0015882A6721B4\r".getBytes(StandardCharsets.UTF_8);
                 ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                 CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                 assertThat(msg).isNotNull();
                 System.out.println(msg);
@@ -1244,7 +1254,6 @@ public class ReferenceTest {
                 void Reporting() throws Exception {
                     byte[] bytes = "\\05CE00159023426633\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -1256,7 +1265,6 @@ public class ReferenceTest {
                 void Acknowledge() throws Exception {
                     byte[] bytes = "\\05CE00259033426633\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -1271,7 +1279,6 @@ public class ReferenceTest {
                 void mostRecent() throws Exception {
                     byte[] bytes = "\\05CE001569E1FE0100\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -1283,7 +1290,6 @@ public class ReferenceTest {
                 void mostSevere() throws Exception {
                     byte[] bytes = "\\05CE001569CCFE0102\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -1295,7 +1301,6 @@ public class ReferenceTest {
                 void clearMostSevere() throws Exception {
                     byte[] bytes = "\\05CE003569C9FE0102\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
@@ -1307,7 +1312,6 @@ public class ReferenceTest {
                 void newError() throws Exception {
                     byte[] bytes = "\\05CE001569E9FE0100\r".getBytes(StandardCharsets.UTF_8);
                     ReadBufferByteBased readBufferByteBased = new ReadBufferByteBased(bytes);
-                    cBusOptions = new CBusOptions(false, false, false, false, false, false, false, false, true);
                     CBusMessage msg = CBusMessage.staticParse(readBufferByteBased, false, requestContext, cBusOptions, bytes.length);
                     assertThat(msg).isNotNull();
                     System.out.println(msg);
diff --git a/protocols/c-bus/src/main/resources/protocols/cbus/c-bus.mspec b/protocols/c-bus/src/main/resources/protocols/cbus/c-bus.mspec
index a95089b36..8f18b5658 100644
--- a/protocols/c-bus/src/main/resources/protocols/cbus/c-bus.mspec
+++ b/protocols/c-bus/src/main/resources/protocols/cbus/c-bus.mspec
@@ -80,20 +80,25 @@
         ['RESET' *Reset
         ]
         ['DIRECT_COMMAND' *DirectCommandAccess(uint 16 payloadLength)
-            [const    byte         at        0x40                           ]
+            [const    byte    at        0x40                                ]
             [manual   CALData
-                                          calData
+                              calData
                         'STATIC_CALL("readCALData", readBuffer, payloadLength)'
                         'STATIC_CALL("writeCALData", writeBuffer, calData)'
-                        '_value.lengthInBytes*2'                            ]
+                        '(_value.lengthInBytes*2)*8'                        ]
         ]
         ['REQUEST_COMMAND' *Command(uint 16 payloadLength)
-            [const    byte                initiator 0x5C                    ] // 0x5C == "/"
+            [const    byte  initiator 0x5C                                  ] // 0x5C == "/"
             [manual   CBusCommand
-                                          cbusCommand
-                        'STATIC_CALL("readCBusCommand", readBuffer, payloadLength, cBusOptions)'
+                              cbusCommand
+                        'STATIC_CALL("readCBusCommand", readBuffer, payloadLength, cBusOptions, cBusOptions.srchk)'
                         'STATIC_CALL("writeCBusCommand", writeBuffer, cbusCommand)'
-                        '_value.lengthInBytes*2'                            ]
+                        '(_value.lengthInBytes*2)*8'                        ]
+            [manual   Checksum
+                              chksum
+                        'STATIC_CALL("readAndValidateChecksum", readBuffer, cbusCommand, cBusOptions.srchk)'
+                        'STATIC_CALL("calculateChecksum", writeBuffer, cbusCommand, cBusOptions.srchk)'
+                        '8'                                                 ]
             [optional Alpha         alpha                                   ]
         ]
         ['NULL' *Null
@@ -103,13 +108,13 @@
         ]
         // TODO: we should check if we are in basic mode
         [* *Obsolete(uint 16 payloadLength)
-            [virtual  uint 16 obsoletePayloadLength 'payloadLength+1']
+            [virtual  uint 16 obsoletePayloadLength 'payloadLength+1'       ]
             [manual   CALData
-                                          calData
+                              calData
                         'STATIC_CALL("readCALData", readBuffer, obsoletePayloadLength)'
                         'STATIC_CALL("writeCALData", writeBuffer, calData)'
-                        '_value.lengthInBytes*2'                            ]
-            [optional Alpha         alpha                                   ]
+                        '(_value.lengthInBytes*2)*8'                        ]
+            [optional Alpha   alpha                                         ]
         ]
     ]
     [simple   RequestTermination  termination                               ]
@@ -226,7 +231,6 @@
         ]
     ]
     [simple   CALData('null') calData                                                           ]
-    [optional Checksum      crc      'cBusOptions.srchk'                                        ] // checksum is optional but mspec checksum isn't
 ]
 
 [discriminatedType CBusPointToMultiPointCommand(CBusOptions cBusOptions)
@@ -243,7 +247,6 @@
             [simple   SALData('application.applicationId')  salData                                    ]
         ]
     ]
-    [optional Checksum      crc           'cBusOptions.srchk'                                          ] // checksum is optional but mspec checksum isn't
 ]
 
 [discriminatedType CBusPointToPointToMultiPointCommand(CBusOptions cBusOptions)
@@ -260,7 +263,6 @@
             [simple   SALData('application.applicationId')  salData                                  ]
         ]
     ]
-    [optional Checksum      crc           'cBusOptions.srchk'                                        ] // checksum is optional but mspec checksum isn't
 ]
 
 /*
@@ -3561,9 +3563,14 @@
             [virtual uint 16 payloadLength 'replyLength']
             [manual   EncodedReply
                               encodedReply
-                                    'STATIC_CALL("readEncodedReply", readBuffer, payloadLength, cBusOptions, requestContext)'
+                                    'STATIC_CALL("readEncodedReply", readBuffer, payloadLength, cBusOptions, requestContext, cBusOptions.srchk)'
                                     'STATIC_CALL("writeEncodedReply", writeBuffer, encodedReply)'
-                                    '_value.lengthInBytes*2'                                     ]
+                                    '(_value.lengthInBytes*2)*8'                                     ]
+            [manual   Checksum
+                              chksum
+                        'STATIC_CALL("readAndValidateChecksum", readBuffer, encodedReply, cBusOptions.srchk)'
+                        'STATIC_CALL("calculateChecksum", writeBuffer, encodedReply, cBusOptions.srchk)'
+                        '8'                   ]
         ]
     ]
 ]
@@ -3610,7 +3617,6 @@
         ]
     ]
     [simple   CALData('requestContext')   calData                                                ]
-    [optional Checksum      crc      'cBusOptions.srchk'                                         ] // checksum is optional but mspec checksum isn't
 ]
 
 [type BridgeCount
@@ -3646,7 +3652,6 @@
             [optional SALData('application.applicationId')  salData             ]
         ]
     ]
-    [optional Checksum      crc      'cBusOptions.srchk'                                                    ] // checksum is optional but mspec checksum isn't
 ]
 
 [type Confirmation
@@ -3686,7 +3691,7 @@
 ]
 
 [type Checksum
-    [simple byte crc]
+    [simple byte value]
 ]
 
 [type StandardFormatStatusReply
@@ -3699,8 +3704,6 @@
                         statusBytes
                         count
                         'statusHeader.numberOfCharacterPairs - 2'   ]
-    [simple     Checksum
-                        crc                                         ]
 ]
 
 [type StatusHeader
@@ -3720,8 +3723,6 @@
                         statusBytes
                         count
                         'statusHeader.numberOfCharacterPairs - 3'   ]
-    [simple     Checksum
-                        crc                                         ]
 ]
 
 [type ExtendedStatusHeader