We are trying to explore the possibility to connect to IP 21 using its OPC server and (potentially) the PI OPC Interface. The problem is that, during our testing, it seems that we are not able to explore the OPC server's tags along with their real time values. We seem to be able to read other IP 21 system parameters, but not real time values, as if they are not exposed to the OPC server. Are we missing something? Do you have any ideas? Thank you!