Before creating the tags as signals on the virtual blackbox, you first need to Connect OPC server and OPC tags in RS Production
Go to Hardware
Go to RS-Blackbox
Click on Cycle signal connections.
Click on Create
A new pop up window will appear.
Click on the Connect icon IO-interface input
Mark the row that you want to use.
Click Save and close
Click on the Connect icon for Measure point
Select the measure point that should have the signal
Now it should look like this.
Click Save and close.
Now you have created and connected the OPC tag signal and should be able to measure cycle signals from the OPC connection.