Positive edge Trigger & Negative edge Trigger signal detection.
In this video, you will learn the positive and negative edge Triggering signals in the Siemens Tia portal.
Siemens Sematic S7-1200 PLC Programming in TIA Portal
Here we the below-mentioned instructions in PLC programming.
P_TRIG:
The Q output logic state is TRUE when a positive transition (OFF-to-ON) is detected on the CLK input state in (LAD).
N_TRIG:
The Q output logic state is TRUE when a negative transition (ON-to-OFF) is detected on the CLK input state in (LAD).
Edge detection VS Edge Trigger:
The main difference between "edge detection" and "level triggering" is that
in edge detection, the output of the sequential circuit changes during the high voltage period or low voltage period.
while, in level triggering, the output of the sequential circuit changes during transits from the high voltage to low voltage or low voltage to high voltage.
"edge detection" और "level triggering" के बीच मुख्य अंतर है
edge detection में, sequential circuit का आउटपुट high voltage अवधि या low voltage अवधि के दौरान बदलता है,
जबकि level triggering में, high voltage से low voltage या low voltage से high voltage में change-over के दौरान एक sequential circuit का आउटपुट बदलता है।
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1 янв 2023
