Start-stop-seal circuit example in PLC

In practice, several start and/or several stop buttons can be used in a process.

Start buttons (with XIC instructions) can be used.

In series, if it is required that ALL be pressed before a process started.

In parallel, if pressing the ANY start button is to start a process.

Stop buttons (with XIO instructions) are normally used in series if pressing ANY stop button is to stop a process.

Start-stop-seal circuit