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Modbus with tcp to rtu gateway ID forwding

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Hi there,

I have an installation with 2 softstarters that use rs485 modbus and an ethernet gateway that is the master of that ring

I can send and receive all data needed using Modscan32 over TCP connection on laptop to both softstarters

so far i havent been able to get a response from the softstarter when using the PLC - error code 5 and 4.

SO I guess the question is, does the slave ID get sent along with the 'message' when using modbus ip function blocks, so the gateway knows where to forward the message?

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