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LOGO! Manual
A5E00067781 01
Description of function
If the state of the input Trg changes from 1 to 0, the current
time T
a
starts and the output Q is set to 1.
15 s before T
a
reaches the time T, the output Q is set to 0
for 1 s.
If the time T
a
reaches the time T, the output Q is reset to 0.
Another switch at the input Trg during T
a
resets T
a
(retrigger
option).
In the event of a power failure, the elapsed time is reset.
Changing the time base
You can also set other values for the warning time and
warning duration .
Time Base T Warning Time Warning
Duration
Seconds* 750 ms 50 ms
Minutes 15 s 1s
Hours 15 min 1 min
*Only relevant for programs with a cycle time of < 25 ms
See also ”Determining the Cycle Time” in Appendix C.
LOGO! Functions
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