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LOGO! Manual
A5E00380835-01
4.4.8 Random generator
Short description
The output of the random generator is set or reset within a
configured time.
Symbol in
LOGO!
Wiring Description
Input En A positive edge ( 0 to 1 tran-
sition) at input En (Enable)
triggers the on-delay time of
the random generator.
A negative edge ( 1 to 0
transition) at input En (En-
able) triggers the off-delay
time of the random genera-
tor.
Parameter The on-delay is set at ran-
dom to a value between 0 s
and T
H
.
The off-delay is set at ran-
dom to a value between 0 s
and T
L
.
Output Q Output Q is set when the
on-delay has expired and if
En is still set. It is reset
when the off-delay has ex-
pired, provided En was not
set again meanwhile.
Parameter T
H
and T
L
Note the defaults of the T
H
and T
L
parameters listed in
Chapter 4.3.2.
LOGO! functions
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