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Timing diagram
Functional description
The threshold trigger measures the signals at input Fre. The pulses are recorded across a
configurable time G_T.
Output Q is set and reset in accordance with the set thresholds. See the calculation rule
below.
Calculation rule
● If the On threshold ≥ Off threshold, then:
Q = 1, if f
Q = 0, if f
● If the On threshold < Off threshold, then Q = 1 if
On ≤ f
Setting the Par parameter
Note
The system scans the counter limit value once per interval G_T.
View in programming mode (example):
Press
LOGO!
Manual, 10/2017, A5E01248535-AA
> On
a
≤ Off.
a
< Off.
a
LOGO! functions
4.4 Special functions list - SF
159

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