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LOGO! Manual
A5E00067781 01
Timing diagram
Trg
T
T
T
H
starts
Q
T
T
L
starts
The bold part of the
timing diagram ap-
pears in the on/off
delay symbol.
Description of function
When the state at the input Trg changes from 0 to 1, the
timed period T
H
elapses.
If the state at the input Trg remains 1 at least for the dura-
tion of the parameterized time T
H
, the output is set to 1
after the time T
H
has elapsed (there is a delay between the
input being switched on and the output coming on).
If the state at the input Trg switches back to 0 before the
time T
H
has elapsed, the time is reset.
When the state at the input changes to 0 again, the timed
period T
L
elapses.
If the state at the input Trg remains at 0 at least for the
duration of the parameterized time T
L
, the output is set to 0
after the time T
L
has elapsed (there is a delay between the
input being switched off and the output going off).
If the state at the input Trg switches back to 1 before the
time T
L
has elapsed, the time is reset.
In the event of a power failure, the elapsed time is reset.
LOGO! Functions
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