Short description
The output is switched on and off depending on two configurable frequencies.
Connection |
Description |
Input Fre |
The function counts 0 to 1 transitions at input Fre. Transitions from 1 to 0 are not counted.
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Parameter |
On: On threshold Off: Off threshold G_T: Time interval or gate time during which the input pulses are measured. |
Output Q |
Q is set or reset according to the threshold values. |
Parameter G_T
The gate time G_T can be provided by the actual value of another already-programmed function:
Analog comparator: Ax – Ay
Analog trigger: Ax
Analog amplifier: Ax
Analog multiplexer: AQ
Analog ramp: AQ
PI controller: AQ
Up/Down counter: Cnt
Analog Math AQ
You select the required function by the block number.
Timing diagram
fa = Input frequency
Description of the function
The trigger measures the signals at input Fre. The pulses are captured during a configurable period G_T.
Q is set or reset according to the set thresholds. See the following calculation rule.
Calculation rule
If the threshold (On) > threshold (Off), then:
Q = 1, if fa >= On
Q = 0, if fa < Off.
If the threshold (On) < threshold (Off), then Q = 1, if
On <= fa < Off.
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0BA0-0BA3: The following calculation rules apply
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