Shows the subscriptions the current node has to other stations.
When an operator station displays data from process stations in an process graph, a
subscription on each data viewed in the graph is created. This implies that the process
stations at regular intervals sends new data to the operator stations, which updates the
process graph with the new data.
If there is a field in a process graph that is not updated. you can enter the Subscription
Client table to see if the subscription is present and if it is updated. Each time new data
arrives for a subscription, 'Count' increments and the time is inserted in 'Time'.
In 'Unknown' on the top row, you can see the number of subscriptions where the attribute
is unknown. This can be a subscription to a station that is not yet running, but it can
also be a subscription that is misspelled, or to objects that no longer exist.
