StartTime is a Read/Only property that returns the start time of a batch object as a reference to a PITime object. Start time is the time the particular object began activity. The start time of a PISubBatch should be within the start and end time of its parent PIUnitBatch and the start time of a PIUnitBatch should be within the start and end time of its parent PIBatch; this is not enforced. The start time, of course, must be older than the end time. Changes to this property are made through the SetStartTime method.
The object placeholder is an object expression that evaluates to an object in the Applies To list.
All PIBatch objects are stored in the PI UDS time series database. The StartTime is used as the storage time.