The functions in this group can be used in a virtual retentive module. Functions with a retentive character always keep their last result value until they are deliberately reset.
When using these functions in a virtual retentive module, the most recently calculated result value can be saved by stopping the measurement. When restarting the measurement, this value can be reloaded as the initial value.
Thus, long-term data, such as operating hours counter and media consumption, are not lost by stopping and starting the measurement.
Functions with this property are: