Subject: |
Query regarding plc s7 200 smart interface with EPICS |
From: |
Arnab Dasgupta <[email protected]> |
To: |
tech-talk <[email protected]> |
Date: |
Tue, 24 Jan 2017 21:26:04 +0530 (IST) |
Hi,
I am trying to communicate a S7200 Smart PLC ( CPU ST-40) with EPICS using the modbus RTU protocol on linux-x86_64, but unable to do that The error is:
.
>>drvModbusAsyn::doModbusIO port A0_Out_Bits error calling writeRead, error=, nwrite=6/6, nread=0
Do I need a Serial communication port Driver for the PLC to be installed first ? I doubt it is possible for this plc. I have tried communication using Modbus Poll but it shows a Timeout Error. Kindly let me know if its possible or if any drivers for S7-200smart is available?
-Thanks
Arnab
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