PLC, PAC and Dedicated Controllers
PLC (full form: Programmable Logic Controllers) in electrical terms can be described in a number of words. PLC plays a vital role in various industries due to the ease of controlling different units in an industry with a simple programming logic control.
Some say it’s a device that modifies the operation of a control system. It has also been described as a digital computer that is designed to perform control functions.
All the above definitions are right. PLC is a system that constantly monitors input devices in order to make decisions based on customized PLC programming in order to control the state of output devices of machinery.