Hello

I want to communicate a vilter compressor panel with S7-1500 CPU by modbus TCP, but I have two errors 80C4 and 80C5, I used mbclient module, and I tested the communication with a modbus software on the PC, and PLC reads fine, but with panel cannot established comm.

I tested with another client modbus software and I can read the panel's holding register, but between S7-1500 CPU and panel doesn´t work for now

If someone could me help, I'll be grateful

CPU serial: S7-1515-2PN Firmware version 2.1

Cordially

Oscar Muñoz

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Split from Modbus General Description.

thanks for your answer, I have ID 1 in the TCON_IP_v4 parameters that configures the connect of MB_Client

But not works for now

Thank you very much, you have a reason the MB_UNIT_ID was FF y put 1 and...voilá It starts to works.

Item Solved

Thanks a lot