I'm trying to communicate with an RS485 MODBUS device via an RS485 to Ethernet adapter (USR-TCP232-410s Serial Device Server) from my Unistream US7-B10-TR22 panel Ethernet port. I'm only doing this because we can't source the RS485 Com module in time and the project needs to get started.
I've been able to communicate with the device using the adapter through a MODBUS pc program so I know it works and is set up correctly, but I can't get it to work with the Unitronics panel. The adapter shows RS485 TX signals going to the MODBUS device from the panel, but no RX signals and the device is not working. I have the device set up as a remote slave under MODBUS>Masters>Panel Ethernet and I believe my registers, slave ID, IP address, and port settings are all correct, but I'm not sure if I'm missing something else. I haven't been able to find how to set baud rate or error handling so maybe that's the issue? Any suggestions on how to proceed would be greatly appreciated!