A machine is always doing one thing
Getting the lesson ready…
A job is always in one state. Keep it as a number in one tag, and let the outputs follow it.
A machine is always doing one thing: the words you will learn
- what a machine is doing right now: one thing out of a few, never two at once
- state
- a tag that holds a whole number, such as 0, 10 or 30
- DINT
- a few states, and the rules that move the job from one to the next
- state machine
- is equal to: it asks, and changes nothing
- =