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https://issues.apache.org/jira/browse/PLC4X-239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17180672#comment-17180672
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Stefano Bossi commented on PLC4X-239:
-------------------------------------
Dear Christofer,
I don't know if this could be of any help but reading each Byte as indicated in
the picture all the value are returned correctly:
"--connection-string 's7:tcp://192.168.1.192?controller-type=S7_1200'
--field-addresses '%DB1:264.0:UINT' '%DB1:266.0:USINT[7]' '%DB1:271.0:UDINT'"
[INFO ] 18:35:28.632 it.fox.datapicker.HelloPlc4x.printResponse() -
Value[value-0]: 2020
[INFO ] 18:35:28.636 it.fox.datapicker.HelloPlc4x.printResponse() -
Value[value-1]:
[INFO ] 18:35:28.640 it.fox.datapicker.HelloPlc4x.printResponse() - - 8
[INFO ] 18:35:28.644 it.fox.datapicker.HelloPlc4x.printResponse() - - 19
[INFO ] 18:35:28.648 it.fox.datapicker.HelloPlc4x.printResponse() - - 4
[INFO ] 18:35:28.652 it.fox.datapicker.HelloPlc4x.printResponse() - - 16
[INFO ] 18:35:28.656 it.fox.datapicker.HelloPlc4x.printResponse() - - 35
[INFO ] 18:35:28.660 it.fox.datapicker.HelloPlc4x.printResponse() - - 28
[INFO ] 18:35:28.664 it.fox.datapicker.HelloPlc4x.printResponse() - - 8
[INFO ] 18:35:28.668 it.fox.datapicker.HelloPlc4x.printResponse() -
Value[value-2]: 470320773
This with the 0.8.0 version of the library.
Regards,
S.
> Read DTL (Date and Time)
> ------------------------
>
> Key: PLC4X-239
> URL: https://issues.apache.org/jira/browse/PLC4X-239
> Project: Apache PLC4X
> Issue Type: Bug
> Components: Driver-S7
> Affects Versions: 0.8.0
> Reporter: Stefano Bossi
> Assignee: Christofer Dutz
> Priority: Major
> Attachments: Screenshot 2020-08-19 at 17.02.58.png,
> correctDateAndTimeRead_v0_6_0.pcapng, wrongDateAndTimeRead_v0_8_0.pcapng
>
>
> Dear developers,
> I have found a bug in trying to read a Date and Time field from a S7 1200
> PLC, here are the informations to help you in fixing the code.
> I am using the HelloPlc4x application for testing, with this command line:
> {code:java}
> "--connection-string 's7://192.168.1.192' --field-addresses
> '%DB1:264.0:DATE_AND_TIME'"{code}
> The Data Block in the PLC is like in the uploaded jpeg.
> When I reach the line of code for the synchronous read request the code never
> return.
> Via Wire Shark I have captured the dialog and I found that in the Read Var
> request only 1 byte is requested instead of the expected 8.
> I have tried with the version 0.6.0 and in that release of the library are
> requested 8 byte correctly (the parsing after receiving the data fail for
> somewhat reason but via wireshark I could see that the data in the response
> is the correct Date and Time value I have on the PLC)
> I attach the pcap capture with the 0.8.0 version and for comparison the one
> with the 0.6.0
> Hope that this could help to have a more robust library.
> Regards,
> Stefano Bossi
>
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