Same modbus address multiple devices

I have multiple units with the same software running on the hardware. Is there a way to make a tag that uses a device currently viewed, or being polled?

This might not be exactly what you’re asking, but since all the tags would have the same addresses for each device you could make a UDT where the device name was a parameter and the OPC item path for all the tags in the UDT are built using that device name.

That sounds about right, what is a UDT and how do I get the variable replacement. Also, I want the opc server to still grab all the tags from all the devices for BI purposes.

Check out the topic “Creating User Defined Types (UDTs)”

Awesome, thx, I’ll check this out.