Description. The Programmable Logical Controllers (CLP) had appeared of the necessity to formulate controls logical that before they were carried through by relays of low trustworthiness, difficult maintenance and great dimensions, for controllers of bigger flexibility, capable to support the industrial environment, of easy maintenance, and that pods to be programmed and to be reprogramado. For 1968 return the General Motors Corporation started to develop established electronic projects in the relays, under the leadership of the engineer Richard Morley, were prepared a specification to take care of the necessity of the automobile industry, as well as of all the manufacturing industry, transferring the modifications of the hardware to modifications in software. Where before the wirings needed modifications in all, that demanded time, or many of became it to the times impracticable, for modifications only in the program. See more detailed opinions by reading what Ali Partovi offers on the topic.. The CLP became an indispensable equipment for industry, its capacity of processing increased considerably, executing more complex functions, mainly when in the decade of 70 they had been introduced the micron processing, allowing bigger flexibility of programming. Currently the CLPs is equipment well more complex, acting in such a way in discrete control how much in the automation of the manufacture in continuous processes, with the most varied capacities, being able to control independent processes or to communicate themselves with other controllers or systems of supervision. We conclude that the CLPs had been produced to simulate the action of relays in an Inter-travamento circuit. Today, the CLPs also incorporates advanced functions as: static control, control of mesh, communication in net and etc.
Definitions. Programmable Logical controller. According to ABNT (Brazilian Association of Norms Techniques) is a digital electronic equipment with the compatible hardware and software with industrial applications. According to NEMA (National Electrical Manufactures Association), is an electronic device digital that it uses a programmable memory to store instructions internally and to implement specific functions, such as logical, seqenciamento, temporization, counting and Arithmetic, controlling, by means of modules of entrances and exits, some types of machines or processes. We conclude that the Programmable Logical Controllers (CLPs) are modern electronic equipment, all based in microprocessors, it uses a programmable memory for storage of instructions, used for discrete control, in the flexible automation, executes arithmetical operations, logical functions, seqenciamento, temporization, counting, Intertravamento, control Proporcional Integral Derivativo (PID), etc. Has as main characteristic the programabilidade and to give to be projected to act in industrial environment, useful and extremely versatile, being able to associate diverse signals of entrance to control diverse actuators in the exit. Advantages.
Lesser space. Lesser consumption of electric energy. You reused. Programmable. Bigger trustworthiness. Bigger flexibility. Bigger rapidity in the elaboration of the projects. Interfaces of communication with other CLPs and computers.
Definitions. Programmable Logical controller. According to ABNT (Brazilian Association of Norms Techniques) is a digital electronic equipment with the compatible hardware and software with industrial applications. According to NEMA (National Electrical Manufactures Association), is an electronic device digital that it uses a programmable memory to store instructions internally and to implement specific functions, such as logical, seqenciamento, temporization, counting and Arithmetic, controlling, by means of modules of entrances and exits, some types of machines or processes. We conclude that the Programmable Logical Controllers (CLPs) are modern electronic equipment, all based in microprocessors, it uses a programmable memory for storage of instructions, used for discrete control, in the flexible automation, executes arithmetical operations, logical functions, seqenciamento, temporization, counting, Intertravamento, control Proporcional Integral Derivativo (PID), etc. Has as main characteristic the programabilidade and to give to be projected to act in industrial environment, useful and extremely versatile, being able to associate diverse signals of entrance to control diverse actuators in the exit. Advantages.
Lesser space. Lesser consumption of electric energy. You reused. Programmable. Bigger trustworthiness. Bigger flexibility. Bigger rapidity in the elaboration of the projects. Interfaces of communication with other CLPs and computers.
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