I have a few tags in the Tags section of Ignition Designer. I can read physical I/O and read/write coils.
However, I am not able to read/write holding registers. For example, I want to read an integer variable that is declared in PLC program with address %MW0. According to Wago manual (p.58) this address corresponds to Modbus address 12288. I tried the following paths:
[Wago]HR12288 - invalid address
[Wago]HR768 - no result
[Wago]HR769 - no result
[Wago]C12289 - reading first bit
I would appreciate if you can provide some guidance on the issue.