Things in, things out

Getting the lesson ready…

A button tells the PLC something. A lamp is turned on by it. Inputs in, outputs out.

Things in, things out: the words you will learn

anything that tells the PLC something: a button, a switch or a sensor

input

anything the PLC turns on and off: a lamp, a valve or a pump

output

a way to draw a PLC's rules as pictures

ladder