Siemens LOGO! 24RC User Manual

LOGO! Manual
A5E00067781 01
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4.4.4 Retentive On Delay
Brief description
Following an input pulse, a definable timed period starts on
expiration of which the output is set.
Symbol in
LOGO!
Connection Description
Input Trg Use the Trg (trigger) input to
start the time for the on
delay.
Input R Input R resets the time for
the on delay and sets the
output to 0.
Parameter T T is the time after which the
output is switched on (out-
put state is switched from 0
to 1).
Output Q Q is switched on when the
delay period T has elapsed.
Parameter T
Please refer to the note in Section 4.3.2 when specifying
the values.
Timing diagram
Trg
T
T
a
starts
Q
R
T
The bold part of the timing diagram appears in the retentive on-delay
symbol.
LOGO! Functions

Siemens LOGO! 24RC Specifications

General

Power Supply	24 V DC
Inputs	8 digital inputs
Outputs	4 relay outputs
Program Memory	400 function blocks
Weight	Approx. 250 g
Protection Class	IP20
Dimensions	72 x 90 x 55 mm
Mounting Type	DIN rail mounting
Operating Temperature	55 °C
Storage Temperature	-40 to 70 °C