Kieran B Posted October 18, 2019 Report Share Posted October 18, 2019 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? Quote Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted October 19, 2019 MVP 2023 Report Share Posted October 19, 2019 Yes, the slave is part of the Modbus TCP configuration. Post your code so we can see what you're doing. Joe T. Quote Link to comment Share on other sites More sharing options...
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