The following example illustrates a Historian that obtains values for a HistoricalData node from another Server.

Figure 4 - Example Historizing External Data Source

The Pressure Variable has a custom historical configurtion. It also has one or more Annotations associated with it, as indicated by the Annotations property. This configuration has no aggregates configured (the AggregateConfiguration is empty). Since there are no aggregates, a value for Stepped is not provided and thus defaults to false.