The example project includes an HourlyHistory Mimic.
The Mimic displays the log period history values, along with timestamps and a quality description for four tubes from a Totalflow G4. Click on a value on the Mimic to display the context-sensitive menu for the underlying point. Use the menu options to view a historic List or a historic Trend to verify that the data was retrieved from the flow computer correctly.
You can exercise the driver by clicking a value, opening that point’s property menu, disabling history, verifying that the history is deleted, and then re-enabling history on the point. The driver will back fill the point data from the flow computer.