Configures when to start the log.

Configures when to stop the log.

Indicates the current state of the trend log based on the Active Period.

true indicates the log is active.

false indicates the log is no longer active because the current time is outside the Active Period.

Defines a pattern for deriving the name of the history created by this extension. It can be static text or a simple pattern that allows the actual history name to be derived from the context. The default value (%parent.name%) sets the history name in the Id to the name of the parent of this extension. Changes to this property cause the format to be reapplied and the history Id in the history config is to be updated.

Serves as a container for sub-properties used to configure the attributes of the history record stored in the History space.

A separate topic documents these properties.

Stores a copy of the most recent record successfully appended to the history for this extension.

Controls data collection behavior for this Trend Log component.

If the Interval value is set to 0, the driver collects trends when a change of value (COV) on the parent point occurs. The subscription lifetime is equal to twice (2x) the value of the COV Resubscription Interval property.

If the Interval value is set to any number greater than 0, the driver collects trend data at the specified time interval.

Indicates the total number of records collected by the Trend Log object since creation. When the value of Total Record Count reaches its maximum possible value, the next value it takes is zero.