Siemens 6ED1050-1AA00-0BE8 Benutzerhandbuch

LOGO! functions

4.4 Special functions list - SF

LOGO!

166

Manual, 04/2011, A5E03556174-01

4.4.3

On-/Off-delay

Short description

The on-/off-delay function sets the output after the set on-delay time has expired, and resets

it upon expiration of the off-delay time.

Symbol in LOGO!

Wiring

Description

Input Trg

A positive edge (0 to 1 transition) at input Trg

(Trigger) triggers the on-delay time T

A negative edge (1 to 0 transition) at input Trg

(Trigger) triggers the off-delay time T

Parameter

is the time after which the output is set hi (output

signal transition 0 to 1).
T

is the time after which the output is reset ( output

signal transition 1 to 0).
Retentivity:

/ = No retentivity

R = The status is retentive.

7UJ
3DU

Output Q

Q is set when the configured time T

has expired and

Trg is still set. It is reset on expiration of the time T

, if

the trigger Trg has not been set again.

Parameters T

and T

Note the preset values for the parameters T

and T

The on-delay and off-delay times for parameters T

and T

can be based on the actual value

of another, already-configured 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