Siemens LOGO! Series Manual page 199

Timing diagram
Functional description
En = 1 and Lap = 0: Using the selected timebase, the stopwatch outputs the current time
(CurT) to AQ.
En = 1 and Lap = 1: The stopwatch leaves AQ at its last value when Lap = 0. This value is
recorded as LapT for stopwatch pause time.
En = 0 and Lap = 1: The stopwatch pauses counting time. It outputs LapT to AQ.
En = 0 and Lap = 0: The stopwatch outputs the current time (CurT) to AQ.
A signal at R sets the AQ value to 0.
LOGO!
Manual, 04/2011, A5E03556174-01
LOGO! functions
4.4 Special functions list - SF
199