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Posted to issues@plc4x.apache.org by "Christofer Dutz (Jira)" <ji...@apache.org> on 2020/05/01 15:32:00 UTC
[jira] [Commented] (PLC4X-154) Reading LREAL from S7 causes
PlcRuntimeException
[ https://issues.apache.org/jira/browse/PLC4X-154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17097445#comment-17097445 ]
Christofer Dutz commented on PLC4X-154:
---------------------------------------
It seems this is related to us not knowing the correct typeCode for the types: LWORD, LINT, ULINT, LREAL, WSTRING and LTIME ... if someone could provide us with a wireshark dump of data exchanged with such a device, I would gladly add the constants. [~jfeinauer] or [~tmitsch] ... could you please help with this?
> Reading LREAL from S7 causes PlcRuntimeException
> ------------------------------------------------
>
> Key: PLC4X-154
> URL: https://issues.apache.org/jira/browse/PLC4X-154
> Project: Apache PLC4X
> Issue Type: Bug
> Affects Versions: 0.4.0
> Environment: S7-1500 PLC
> Reporter: Sebastian Wiendl
> Priority: Major
>
> Reading an LREAL in my demo project https://github.com/sewiendl/plc4j-demo/tree/feature/read-lreal causes the following exception:{code}org.apache.plc4x.java.api.exceptions.PlcRuntimeException: Field 'LReal' could not be fetched, response was INVALID_DATATYPE
> at org.apache.plc4x.java.base.messages.DefaultPlcReadResponse.getFieldInternal(DefaultPlcReadResponse.java:577)
> at org.apache.plc4x.java.base.messages.DefaultPlcReadResponse.getObject(DefaultPlcReadResponse.java:81)
> at com.example.plc4jdemo.Main.main(Main.java:39){code}The field was added with {code} builder.addItem("LReal", "%DB101.DBX110:LREAL");{code}
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