需求
“Create ladder logic with a start/stop sequence latch: run valve 1 for five seconds, then run valve 2 for three seconds after timer 1 is done.”
接著試試Add a manual abort pushbutton.Change the timer preset to 30 seconds.
這張圖裡有什麼
看懂背後的決策。
01
Use of timers (TON) to control valve open durations.
02
Seal-in circuit to maintain sequence enable.
03
Cascading timer done bits to trigger subsequent steps.
When sequential operation of actuators is needed with defined on-times and manual start/stop control.