Siemens LOGO! - Retentive On-Delay

LOGO! Manual
A5E00380835-01
144
4.4.4 Retentive on-delay
Short description
A one-shot at the input triggers a configurable on-delay
time. The output is set when this time has expired.
Symbol in
LOGO!
Wiring Description
Input Trg A signal at input Trg (Trig-
ger) triggers the on-delay
time.
Input R A signal at input R resets
the on-delay time and the
output.
Parameter T represents the on-delay
time for the output (output
status transition 0 to 1).
Retentivity:
/ = no retentivity
R = The status is retentive.
Output Q Q is set after the time T has
expired.
Parameter T
Note the defaults specified in Chapter 4.3.2.
The time for parameter T can be based on the process
variable of another, already programmed function. You can
use the process variables of the following functions:
 Analog comparator (actual value Ax - Ay,
see Chapter 4.4.18)
 Analog threshold trigger (actual value Ax,
see Chapter 4.4.16)
 Analog amplifier (actual value Ax, see Chapter 4.4.20)
 Analog multiplexer (actual value AQ, see Chapter
4.4.26)
 Analog ramp (actual value AQ, see Chapter 4.4.27)
 PI controller (actual value AQ, see Chapter 4.4.28)
and
LOGO! functions