Edge Triggered Wiping Relay - Siemens Logo! Manual

LOGO! functions
4.4.6

Edge triggered wiping relay

Short description
An input pulse generates a preset number of output pulses
with a defined pulse/pause ratio (retriggerable), after a con-
figured delay time has expired.
Symbol in
LOGO!
Parameter T
Please note the information on parameter T in
Chapter 4.3.2.
Timing diagram A
Trg
Q
T is running
a
148
Wiring
Input Trg
Input R
Parameter
Output Q
T T
H H
Description
A signal at input Trg (Trig-
ger) triggers the times for
the edge triggered wiping
relay.
A signal at input R resets
the current time (T
output.
The interpulse width T
the pulse width T
gurable.
N determines the number of
pulse/pause cycles TL/TH:
Range of values: 1...9
Retentivity:
/ = No retentivity
R = The status is retentive.
Q is set after TL has ex-
pired, and reset after TH
has expired.
The bold section of the timing
diagram also appears in the
symbol of the edge triggered
wiping relay.
N=1
T =0
L
) and the
a
and
L
are confi-
H
LOGO! Manual
A5E00380835-01