i cannot seem to get a connection when using the DIGIone IAP. I can take the same two wires to a 485-usb convertor and read everything on modscan but when i hook those up to 3&4 or 6&7 or both 3 jumped to 6 and 4 jumped to 7 still no comms. all settings on serial port are the same as the modbus gateway i am trying to talk to. tried terminated and unterminated.
Any help is appreciated
Thanks