This instruction acts as a timer to delay a falling edge by a predefined time.
On the rising edge of the start input, the output (Q) goes into the ON state.
The elapsed time (ET) begins evolution as soon as there is a falling edge of the start input and continues to increase until the rising edge of the start input, at which time it is imposed equal to 0.
The output (Q) remains in the ON state until the elapsed time (ET) reaches the specified preset time period (PT).
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tm_of (timer name, bool start)
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Name of the timer of type timer
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Timer start input (rising edge).
Can be any condition, even an expression (e.g., cp(1) > 1000)
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Rule, Task
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Timers are not retentive
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•Generate alarm 9901 ill. fun. if the timer is previously used with another type of timer |
