Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001
· The PLC continuously scans the inputs, and changes the outputs.
· The Process can be anything - a large press, a car, a security door, a blast furnace.
· As inputs change (e.g. a start button) the outputs will be changed. This will cause the process to change, and new inputs to the PLC will be received.
