Siemens 6ED1050-1AA00-0BE8 User Manual

LOGO! functions

4.4 Special functions list - SF

LOGO!

168

Manual, 04/2011, A5E03556174-01

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 (Trigger) triggers the on-delay

timer.

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.

7UJ
5
3DU

Output Q

Q is set after the time T has expired.

Parameter T

Note the defaults specified in topic Time response (Page 151).
The time for parameter T can be provided by the actual value of another already-

programmed function. You can use the actual values of the following functions:
●  Analog comparator (Page 218) (actual value Ax – Ay)
●  Analog threshold trigger (Page 213) (actual value Ax)
●  Analog amplifier (Page 226) (actual value Ax)
●  Analog multiplexer (Page 248) (actual value AQ)
●  Analog ramp  (Page 251) (actual value AQ)
●  Mathematic instruction (Page 265) (actual value AQ)
●  PI controller (Page 256) (actual value AQ)
●  Up/down counter (Page 201) (actual value Cnt)

If your LOGO! is a LOGO! 0BA7, you can additionally use the actual values of the following