![]() What differentiated the Modicon 084 from other products in the market was its programming technique. They began producing the Modicon 084, the first PLC. Modicon PLCįollowing this success, Bedford Associates changed its name to Modicon PLC. When the Modular Controller was tested in General Motors, it showed a 60 percent reduction in downtime. This device met all the requirements the Standard Machine Controller was asking for. Morley, who worked for Bedford associates, designed a device known as the Modular Digital Controller. Should not lose stored programs during power outages, therefore, have at least 1k of memory that can be expanded to 4k.Should offer easy programming and reprogramming.Should have 16 outputs that can be expanded to 128.Should contain 16 units that can be expanded to 256.Should use solid state components which should be modular and expandable.Some of the major elements of the specification included: General Motors designed a specification for a ‘ Standard Machine Controller’ and distributed it to vendors for a quote. The first PLC began being developed in 1968. This article will discuss the history of PLC programming and how it has evolved over the years. Since then, PLCs have been broadly adopted as the standard automation control system in discrete manufacturing industries. Their aim was to replace the hardwired relays and timers with programmable and flexible controllers. The automobile sector was the first industry to deploy PLCs into its operations. It is designed to help in the control of manufacturing processes. The first PLC was introduced in the late 1960s.Ī programmable logic controller is an industrial computer. PLC Programming Then & Now: The History of PLC’s ![]()
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