Hi, I have created a simple app that uses the Labview TCP functions (as the example Simple Server/Client VI's) to write to a Siemens S400 PLC via Ethernet. While I can see that the data arrives in the PLC, the values I send (Int 1-99) are different to what I send, and for each value sent 3 values are received. Is there a document/link that can help me?

LabVIEW

@MarianM wrote:

Hello,

I know it's an old thread, but anybody have an example?

Thank you!

Which Siemens PLC are you using? I say this because newer Siemens PLC now support Modbus TCP which would be my choice.

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