Hi guys,

I have a new question according Modbus TCP.

I have Modbus RTU to Modbus TCP converter. There are 5 slaves connected.

As I know, in Modbus TCP slave ID number it's not relevant but in this case should be.

Let's say that I have 5 RTU slaves - 10,11,12,13,14 and then I am trying to reach them by Modbus TCP, with one IP address. As I see, this converter is making a bridge and maps real slaves to virtual slaves on TCP. I don't see anywhere slave ID parameter in Modbus configuration datablock or function block. Does it mean I need to have separete IP address for each Modbus RTU slave after bridge?

Could you please advise?

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Split from PCS7 - Modbus TCP on CPU.

Hello,

only addition about IPs, no, you need only connect to Adapter (Server's IP) and conversion to serial RTU is automatically done internally by adapter. In this case you need that Unit_ID...

Thank you, guys.

I didn't recognize this parameter.