The Programmable Logic Controller (PLC) was invented by Richard “Dick” Morley in 1968. He developed the first PLC, called the Modicon 084, while working on a project for General Motors. At that time, factories used complicated relay-based control panels that were hard to modify and maintain. Morley’s idea was to create a small, programmable electronic controller that could replace those relays and make automation flexible and reliable.
This invention completely transformed industrial automation. With a PLC, engineers could change machine operations simply by updating the program instead of rewiring the system. It saved time, reduced errors, and increased efficiency. The company Modicon (Modular Digital Controller), founded by Morley, became the first to manufacture PLCs commercially. Today, almost every manufacturing and process industry in the world uses PLC systems, and Richard “Dick” Morley is remembered as the Father of the PLC for his groundbreaking contribution.