A programmable logic controller (PLC) or program controller is a digital computer used to automate the electro-mechanical process.This factory adjustment line can be used to control machinery,
recreation rides, or lighting fixture, etc. in the automation of electromechanical processes. PLC is used in many industries and machines. Programs that control machine operation are usually stored in battery-supported or static memory. A PLC is an example of a real-time system because output results must be presented in a time frame in response to input conditions, otherwise, the result will be an irregular operation.
Programmable logic controller Software
Programmable logic controllers were initially adopted by the automotive industry, where software modifications changed the rewiring of a rigid wiring controlled panel when the production model was changed. The process of updating such facilities to replace the annual model took a lot of time and cost, as the electorates had to re-wire each relay individually. In 1968, GM Hydramatic (General Motors' Automatic Transmission Division) issued a request to propose electronic changes for the hard-wired relay system. The first PLC, 084, was specified as it was the result of the Choracian project of Bedford Associates. Bedford Associates started a new company dedicated to the development, manufacturing, sales, and new product: Medicon, an abbreviation for a modular digital controller. One of the people working on the project was Dick Morley, known as the father of PLC.The Medicon brand was sold to Gold Electronics in 1977 and was later acquired by the German company AEG and then by its current owner, French Schneider Electronic. One of the 084 models initially built is now on display at Medicon's headquarters in North Andover, Massachusetts. When the unit was retired after nearly twenty years of uninterrupted service, it was given to Medicon by GM. Until the appearance of 984, Medicon used 84 monikers at the end of its product range
