Multiple Function Switch - Siemens LOGO! Manual

View in parameter assignment mode (example):
4.4.10

Multiple function switch

Short description
Switch with two different functions:
● Pulse switch with off-delay
● Switch (permanent lighting)
Symbol in LOGO!
LOGO!
Manual, 10/2017, A5E01248535-AA
Wiring Description
Input Trg A signal at input Trg (Trigger) sets output Q (perma-
nent light) or resets Q with an off-delay. When active,
output Q can be reset with a signal at input Trg.
Input R A signal at input R resets the current time T
resets the output.
Parameter T represents the off-delay time. The output is reset (1
to 0 transition) when time T expires.
T
L
be set to enable the permanent light function.
T
!
T
!L
od.
Retentivity:
/ = No retentivity
R = The status is retentive.
Output Q A signal at Trg switches on output Q. Depending on
the length of the input at Trg, the output is switched
off again or switched on permanently, or it is reset
with a further signal at Trg.
4.4 Special functions list - SF
represents the time during which the output must
represents the on-delay for the prewarning time.
represents the length of the prewarning time peri-
LOGO! functions
and
a
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