Hello everyone, i have a SIMATIC s7-1200 PLC and i need to read-write the PLC tags through LabVIEW 2011. I am using NI OPC Server 2012 and Siemens TCP/IP Driver which supports s71200. Siemens driver is working correctly on my system (Windows 7 Ultimate) and i can read PLC tags with no problem. I am facing problems although reaching OPC Server through LabVIEW. I added an IO Server to my LabVIEW project, set the IO Server as OPC Client and chosen NI OPC Server v5, but i cannot see the IO items of the OPC Server. I configured the DCOM Settings and my Server identity as "Interactive User", as suggested by NI. Does anyone have a clue where the problem could be? Andreas

LabVIEW

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I'm afraid not. OPC Server 2012 does not fully support s7-1200.

You may consider trying another OPC Server that supports s7-1200, such as Simatic net, or go for the Modbus alternative.

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