I am trying to connect a Toshiba TRSPUX10A plc to a hitech PWS6600 HMI (Beijer electronics). I am using RS485 connection, and trying to get the communication going between the plc and hmi using Modbus RTU protocol.
The PLC is slave and and HMI is Master, and I have a Modbus slave tag table for the plc.
HMI Software: ADP3
PLC Software: TRPGMS01
Our supplier of the product cannot assist me as he passed away, and the manufacturers of the systems refer me to each other but with no luck. I have asked numerous system integrators however they only work with the systems they supply.
I want to read a Modbus slave tag: Holding register 4500001 in the plc and have it displayed on the hmi.
Please advise if anyone could assist.