Stefano Bossi created PLC4X-239: ----------------------------------- Summary: 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 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 -- This message was sent by Atlassian Jira (v8.3.4#803005)