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Tag Count using Multiple OPC Hops

I am using the TOP Server OPC UA Client driver to tunnel information from a 3rd Party OPC UA Client to another TOP Server machine. I am seeing the correct active tag count in the first TOP Server configuration, but the the second configuration is showing no active tags.

When using multiple hops in OPC UA or DA connections, the update notifications do not work properly when all of the client drivers are using Exception mode. This is expected based on the way the protocols work. The recommendation is to set one or more of the client drivers to Poll mode. This, however, will not provide you with the expected tag count in the display of the configuration.

This is because there are two steps when adding an item reference to the server as a subscription (Exception mode). These are:

  1. adding the item reference, and then
  2. setting the item as active.
In Poll mode for DA and UA, we complete only the first step. Item references added to the server appear as the second number under "Active Tags" in the status pane (example 1 : 0). We do not want to set the items as active in Poll mode because we will receive data change updates from the target server, which defeats the purpose of polling it for new information.