What type of recording is triggered specifically by changes in value quality?

The type of recording that is triggered specifically by changes in value quality is known as a Delta recording. This method captures data only when there is a significant change in the measured value from its previous recorded state or when the quality of the data changes. The Delta recording technique is beneficial as it reduces unnecessary data storage by only keeping track of meaningful changes, thus optimizing performance and resource usage in the data historian.

In this context, Delta recording focuses specifically on the dynamics of data points in relation to their quality, ensuring that only impactful shifts in measurement are logged. This approach contrasts with other methods where recordings may occur at regular intervals or based on predefined conditions rather than changes in data quality.