MODBUS tcp/ip communication
I am using a pm554 eth CPU for my project which is connected to a router. Now I have connected to that IP space so I can communicate with my CPU and dump program in it. Now I need to connect it to my OPC. I have added Modbus TCP/IP server and client protocols. Should I do anything more in the PLC side to communicate it with the OPC? Coz I'm getting only register values to my OPC . Not getting the statuses of the INPUTS and OUTPUTS!
If I did not understand you wrong, you can get variable values through OPC connection.
I guess, you defined only local variables for OPC Connection, also you need to define Input / Output channels.
Please see below link for OPC Configuration under AC500:
Hope it helps you.