I am using PLC Modicon M221, I want to make communication between PLC Modicon M221 to OPC Kepware by modbus tcp/ip ethernet.
In PLC, I use software somachine basic, I set digital input and digital output. And in OPC Kepware my address 00001, but when I switch turn On/Off in PLC, value in OPC Kepware doesnt change.
Could you please correct me?
Thank you
Bujang