Deactivating the diagnostics or the setting the correct values at the inputs will reset the internal counter to "0".
When IN is "1", the ERR output will display an error that remains active until IN becomes "0", or diagnostics is deactivated, after the time specified at the DTIME input has expired.
If a tolerance time DTIME of "0" is entered, an error message appears immediately if the IN input becomes "1".
An example for the process of signal group monitoring is given in the timing diagram
Timing diagram signal group monitoring
(1)
If IN is "1", the internal timer is started.
(2)
If IN becomes "0", the internal timer is stopped and reset.
(3)
If the internal timer reaches the DTIME value, an error is reported (ERR="1").
(4)
If IN becomes "0", the error bit (ERR) is set to "0" and the internal timer is stopped and reset.
(5)
When the enable signal ED is "0", (ERR) is set to "0" and the internal timer is stopped and reset. 
