can't use slave ID with TCP Client?

[HollyGates]

Hi there, thanks for this library. I have got the example going on my ESP32 for modbus TCP client and I can read and write registers from my PC using modbus TCP query program from SimplyModbus. However, the client (ESP32) behaves the same no matter what I set the modbus slave ID to - it doesn't seem to pay any attention to that number.

In this application I'm working on I need to be able to respond differently depending on which slave ID the query is sent to. Is there a way to check ID for an incoming request?

Thanks for any thoughts.