Saturday, April 16, 2011

What is a PLC?

PLC is a device, which is used to control a machine or process as per the human control sequence. A PLC monitors inputs, makes decisions based on its program, and controls outputs to automate a process or machine.

Advantages

Smaller physical size than hard-wire solutions

Easier and faster to make changes

PLCs have integrated diagnostics and override functions

Diagnostics are centrally available

Applications can be immediately documented

Applications can be duplicated faster and less expensively