Hi All!
I need to read the system bits & words (from Quantum Unity Hotstandby PLCs) at my SCADA/HMI using ModBus TCP/IP protocol without moving system registers to memory registers.
I think so it is possible, because I have read the status registers of TWIDO PLC in the XBTGT using ModBus TCP/IP. The XBTGT have option to read system registers %S & %SW, but my SCADA have option to read 0X, 1X, 3X, 4X registers.
Hope there will be someone who will guide me.
Regards
Leo-Ali