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Posted to dev@plc4x.apache.org by "Mirko Pohland (JIRA)" <ji...@apache.org> on 2019/07/11 11:30:00 UTC
[jira] [Created] (PLC4X-134) S7 is terminating the connection
during handshake
Mirko Pohland created PLC4X-134:
-----------------------------------
Summary: S7 is terminating the connection during handshake
Key: PLC4X-134
URL: https://issues.apache.org/jira/browse/PLC4X-134
Project: Apache PLC4X
Issue Type: Bug
Components: Driver-S7
Affects Versions: 0.5.0
Reporter: Mirko Pohland
When trying to connect to my S7-300 I get the following error (stack trace attached):
{color:#FF0000} org.apache.plc4x.java.api.exceptions.PlcIoException: Connection terminated by remote{color}
After some debugging I found out that I can fix this issue by doing a small change in S7PlcConnection.java
From
short calledTsapId = S7TsapIdEncoder.encodeS7TsapId(DeviceGroup.OS, 0, 0);
short callingTsapId = S7TsapIdEncoder.encodeS7TsapId(DeviceGroup.PG_OR_PC, rack, slot);
where calledTsapId does not contain rack and slot to
short calledTsapId = S7TsapIdEncoder.encodeS7TsapId(DeviceGroup.OS, rack, slot);
short callingTsapId = S7TsapIdEncoder.encodeS7TsapId(DeviceGroup.PG_OR_PC, 0, 0);
Now I can connect to the S7.
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