Changing the time base
You can change the pre-warning time base and the period.
Description of the function
Output Q is set to 1 with a 0 to 1 signal transition at input Trg. The 1 to 0 transition at input Trg triggers the
current time and output Q remains set.
Output Q is reset to 0 when Ta reaches the time T. Before the off delay time (T - T
!
) has expired, you can
output a pre-warning that resets Q for the duration of the off pre-warning time T
!L
.
Ta is retriggered (optional) at the next high/low transition at input Trg and if Ta is expiring.
If retentivity is not set, output Q and the expired time are reset after a power failure.
6.5.10 Multiple function switch
Short description
Switch with two different functions:
Pulse switch with off delay
Switch (continuous light)
With a signal at input Trg (Trigger) you set output Q
* makes sense only for programs with a cycle time of < 25 ms
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