199
LOGO! Manual
A5E00380835-01
4.4.22 Pulse relay
Short description
A short pulse at the input sets and resets the output.
Symbol in
LOGO!
Wiring Description
Input Trg You set and reset output Q
with a signal at input Trg
(Trigger).
Input S You set output Q with a sig-
nal at input S.
Input R You reset output Q with a
signal at input R.
Parameter Selection:
RS (R input priority) or
SR (S input priority)
Retentivity:
/ = No retentivity
R = The status is retentive.
Output Q Q is set with a signal at Trg,
and reset with the next sig-
nal at Trg, if S and R = 0.
Timing diagram
Trg
Q
R
The bold printed section of the
timing diagram is also shown in
the symbol for the pulse relay.
S
LOGO! functions
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