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Parameter T
Note the information on parameter T in topic Time response (Page 115).
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 165) (actual value Ax – Ay)
● Analog threshold trigger (Page 160) (actual value Ax)
● Analog amplifier (Page 173) (actual value Ax)
● Analog multiplexer (Page 194) (actual value AQ)
● Analog ramp (Page 197) (actual value AQ)
● Analog math (Page 209) (actual value AQ)
● PI controller (Page 201) (actual value AQ)
● Up/down counter (Page 151) (actual value Cnt)
Select the required function by the block number. The timebase is configurable. For
information on valid ranges and parameter defaults, refer to the On-delay (Page 123) topic.
Timing diagram
Functional description
A 0 to 1 transition at input Trg sets the output, and triggers a time T
remains set.
Output Q is reset to lo (pulse output) when T
The output is immediately reset if there is a 1 to 0 transition at input Trg before the specified
time has expired.
If retentivity is not set, output Q and the expired time are reset after a power failure.
Manual, 10/2017, A5E01248535-AA
4.4 Special functions list - SF
reaches the value preset at T (T
LOGO! functions
during which the output
= T).


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