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  1. Hi Everyone, 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. Kind Regards Quintin