Short description
The output is not switched on until a configured delay time has expired.
Connection | Description |
Trg input | The on-delay time is triggered via the Trg (Trigger) input. |
Parameter | T: represents the on-delay time after which the output is switched on (output signal transition 0 to 1). Retentivity on = the status is retentive in memory. |
Output Q | Q switches on after a specified time T has expired, provided Trg is still set. |
Parameter T
The time in parameter T can be provided by the actual value of another already-programmed function:
Analog comparator: Ax - Ay
Analog threshold trigger: Ax
Analog amplifier: Ax
Analog multiplexer: AQ
Analog ramp: AQ
Mathematic instruction: AQ
PI controller: AQ
Up/Down counter: Cnt
For the 0BA7 devices, you can additionally use the actual values of the following already-programmed functions:
On-delay: Ta
Off-delay: Ta
On-/off-delay: Ta
Retentive on-delay: Ta
Wiping relay(pulse output): Ta
Edge triggered wiping relay: Ta
Asynchronous pulse generator: Ta
Stairway light switch: Ta
Multiple function switch: Ta
Stopwatch: AQ
Analog filter: AQ
Average value: AQ
Max/Min: AQ
Thresholder trigger: Fre
You can select the required function by the block number.
For information on the validity and accuracy of the time base, refer to the LOGO! manual.
Timing diagram
Description of the function
The time Ta (the current time in LOGO!) is triggered with the 0 to 1 transition at input Trg.
If the status at input Trg stays 1 at least for the duration of the configured time T, the output is set to 1 when this time has expired (the on signal of the output follows the on signal of the input with delay).
The time is reset if the status at input Trg changes to 0 again before the time T has expired.
The output is reset to 0 when input Trg is 0.