Siemens LOGO! Series Manual page 163

Timing diagram
Functional description
The time T
If the status of input Trg is 1 at least for the duration of the configured time T, the output is
set to 1 on expiration of this time (the output follows the input with on-delay).
The time is reset when the status at input Trg returns to 0 before the time T has expired.
The output is reset to 0 when the signal at input Trg is 0.
If retentivity is not set, output Q and the expired time are reset after a power failure.
LOGO!
Manual, 04/2011, A5E03556174-01
The view in parameter assignment mode (example):
is triggered with a 0 to 1 transition at input Trg (T
a
LOGO! functions
4.4 Special functions list - SF
is the current LOGO! time).
a
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