What does the query parameter 'wwTimeDeadband = 5000' define?

The query parameter 'wwTimeDeadband = 5000' refers to the configuration of the deadband effect in data retrieval processes. In the context of the AVEVA Historian, a deadband is a range of values within which changes are considered negligible or insignificant, and thus, data points would not be stored or retrieved if they fall within this range.

Specifically, this parameter sets a time threshold, where '5000' indicates that any data within a time frame of 5000 milliseconds (or 5 seconds) from the last relevant data point will not be transmitted or logged as a new point. This helps in reducing the volume of data and ensuring that only significant changes in monitored values are recorded, optimizing performance and storage.

In this way, setting the time deadband allows for efficient data management by filtering out frequent, minor updates that do not reflect meaningful changes in the underlying process being monitored.