Have been struggling to communicate between Advanced HMI and CP1h. Tried easy modbus but could not get it to work. Felt unsure about setting up the PLC in master or slave. Eventually I found the official Modbus RTU slave on an Omron website and included it in my program. Still could not get it to go. Found that the PDF that comes with the FB states right hand comms port on the PLC states right hand port is &2. When I set up my FB using port &3 modbus came to life. A few weeks further down the track I have a fully operational operator interface. I am using a temperature controller from the toolbox with the built in push buttons for auto manual control selection and setpoint selection. The controler works in conjunction with a the PID instruction in ladder. I am chuffed with AHMI. Thanks Gary.
