(1) Control Requirements
The PLC program using a timer constitute a pulse generator,With two timers generate a pulse signal frequency of the duty cycle can be set
(2) Ladder Diagram
|PLC Ladder Diagram|
When the input I0.0 is 1, the output Q0.0 is 0 or 1 alternately, a periodic pulse signal for 3s, the pulse width is 1s.