I am using a Schneider PLC simulator with a simple program and I will like to create a HMI using Ignition designer.
I can connect the PLC via the OPC-UA server, but I am not able to define the variables to read them on the HMI.
Can anyone help me?
Search for “Modbus Specific Addressing” in the manual.
Prefixes for each simple type are:
HR for 4xxxxx registers
IR for 3xxxxx registers
C for 0xxxxx coils
DI for 1xxxxx discrete inputs
Example - For a driver named MyPLC, the OPC Item Path for addressing register 400001 would be:
Hope this helps.