The application and development of PLC

As a general industrial control computer, in 30 years, from scratch, programmable controller to realize the industrial control field wiring leap of logic to storage logic; Its function from weak to strong, has realized the logic control to the progress of the digital control; Its application fields since the childhood, has realized the single equipment to fit for motion control, process control, simple control and control of distribution across a variety of tasks. Today's PLC control is becoming the mainstream in the field of industrial control equipment, plays a more and more important role in all over the world. The definition of PLC controller programmable controller, hereinafter referred to as PLC ( 可编程逻辑控制器) , refers to computer technology as the foundation of new industrial control device. In 1987, the international electrotechnical commission ( 国际电工委员会) By the PLC in the draft standard for PLC made the following definition: 'PLC is a kind of specially designed for application in industrial environment and digital computing operation of electronic devices. It can adopt program memory, used in its internal storage to perform logic operation, sequence operation, timing, counting and arithmetic operations such as instruction, and can through digital or analog input and output, control various types of machinery or production process. PLC and related peripheral equipment should press easily and industrial control system to form a whole, easy to extend its function and the principle of design. ”
Whenever you grab your remote and turn on the TV, there are numerous ads promoting plc manufacturers and offering for programmable control systems extracts, which are said to boost plc controller price.
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