[jira] [Updated] (PLC4X-343) Issue with Modbus Write -- PLC Connection Exception: Error Creating Channel

["Maximilian (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PLC4X-343?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Maximilian updated PLC4X-343:
-----------------------------
    Description: 
Hi!
 
Thanks for supporting this library.
 
I'd like to seek your advice on an issue I'm having surrounding *writing* to Modbus registers.
 
I have a code snippet as follows:
 
!image-2022-05-30-13-31-56-320.png!
 
I'm able to make about ~100 requests successfully, until I encounter a{{{{}} PLC Connection Exception: Error creating channel error{}}}. This is consistent with multiple tries.
 
*I've tried using {{{}CachedDriverManagers / PooledDriverManagers{}}}, but this will result in a NullPointerException when I tried to use its {{{}PlcConnection object to create a PlcWriteRequest.Builder{}}}. Essentially, the "builder" object is null:*
 
!mb2.png!
 
*However, I'm able to create {{{}PlcReadRequest builders for reading data; no NullPointerExceptions{}}}:*
 
This is how I'm creating the {{{}CachedDriverManager{}}}:
 
!mb3.png!
 
I've noticed that I will never encounter a maximum buffer limit reached for connections created from the {{{}CachedDriverManager{}}}, used to make Modbus read requests. Hence, I considered using connections created from the CachedDriverManger to make Modbus write requests, {*}however I get a NullPointerException whenever I try to create a PlcWriteRequest.Builder object{*}.
 
Hope you could help point me in the right direction, been stuck at this for a couple of days.
 
Thanks!
Regards,
Max
 

  was:
Hi!
 
Thanks for supporting this library.
 
I'd like to seek your advice on an issue I'm having surrounding *writing* to Modbus registers.
 
I have a code snippet as follows:
 
!image-2022-05-30-13-31-56-320.png!
 
I'm able to make about ~100 requests successfully, until I encounter a{{{{}} PLC Connection Exception: Error creating channel error{}}}. This is consistent with multiple tries.
 
*I've tried using {{{}CachedDriverManagers / PooledDriverManagers{}}}, but this will result in a NullPointerException when I tried to use its {{{}PlcConnection object to create a PlcWriteRequest.Builder{}}}. Essentially, the "builder" object is null:*
 
!mb2.png!
 
*However, I'm able to create {{{}PlcReadRequest builders for reading data; no NullPointerExceptions{}}}:*
 
This is how I'm creating the {{{}CachedDriverManager{}}}:
 
!mb3.png!
 
I've noticed that I will never encounter a maximum buffer limit reached for connections created from the {{{}CachedDriverManager{}}}, used to make Modbus read requests. Hence, I considered using connections created from the CachedDriverManger to make Modbus write requests, {*}however I get a NullPointerException for the "builder"{*}.
 
Hope you could help point me in the right direction, been stuck at this for a couple of days.
 
Thanks!
Regards,
Max
 


> Issue with Modbus Write -- PLC Connection Exception: Error Creating Channel
> ---------------------------------------------------------------------------
>
>                 Key: PLC4X-343
>                 URL: https://issues.apache.org/jira/browse/PLC4X-343
>             Project: Apache PLC4X
>          Issue Type: Bug
>          Components: Driver-Modbus
>    Affects Versions: 0.9.1
>            Reporter: Maximilian
>            Priority: Blocker
>         Attachments: image-2022-05-30-13-31-56-320.png, mb1.png, mb2.png, mb3.png
>
>
> Hi!
>  
> Thanks for supporting this library.
>  
> I'd like to seek your advice on an issue I'm having surrounding *writing* to Modbus registers.
>  
> I have a code snippet as follows:
>  
> !image-2022-05-30-13-31-56-320.png!
>  
> I'm able to make about ~100 requests successfully, until I encounter a{{{{}} PLC Connection Exception: Error creating channel error{}}}. This is consistent with multiple tries.
>  
> *I've tried using {{{}CachedDriverManagers / PooledDriverManagers{}}}, but this will result in a NullPointerException when I tried to use its {{{}PlcConnection object to create a PlcWriteRequest.Builder{}}}. Essentially, the "builder" object is null:*
>  
> !mb2.png!
>  
> *However, I'm able to create {{{}PlcReadRequest builders for reading data; no NullPointerExceptions{}}}:*
>  
> This is how I'm creating the {{{}CachedDriverManager{}}}:
>  
> !mb3.png!
>  
> I've noticed that I will never encounter a maximum buffer limit reached for connections created from the {{{}CachedDriverManager{}}}, used to make Modbus read requests. Hence, I considered using connections created from the CachedDriverManger to make Modbus write requests, {*}however I get a NullPointerException whenever I try to create a PlcWriteRequest.Builder object{*}.
>  
> Hope you could help point me in the right direction, been stuck at this for a couple of days.
>  
> Thanks!
> Regards,
> Max
>  



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