User Manual

LOGO! functions
4.4 Special functions list - SF
LOGO!
Manual, 06/2014, A5E33039675
171
4.4.14
Stopwatch
Short description
The stopwatch function counts the elapsed time between a start stopwatch signal and a stop
stopwatch signal.
Symbol in LOGO!
Wiring
Description
En A signal at input En begins counting elapsed time at
analog output AQ.
Lap A positive edge (0 to 1 transition) at input Lap pauses
the stopwatch.
A negative edge (1 to 0 transition) at input Lap
resumes the stopwatch.
R
A signal at input R resets the elapsed time.
Parameter You can set a timebase
TB
for the stopwatch.
Possible timebase settings
:
10 ms, s, m, and h
Retentivity:
/ = No retentivity
R = The status is retentive
Output AQ A signal at input Lap holds the value of AQ until Lap
is reset to 0. A signal at input R resets the value of
AQ to 0.
Parameters TB
You can set a timebase from the following timebase set:
● 10 ms (10 milliseconds)
● s (seconds)
● m (minutes)
● h (hours)