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What is the difference between PLC and SCM in the development of Zhongshan electronic control board

2020-05-06 1051

  PLC control system, programmable logic Controller, programmable logic controller, a kind of digital operation electronic equipment specially planned for industrial production. It selects a kind of programmable memory for its internal storage program to perform logic operation, sequential operation, punctuality, counting and arithmetic operation and other user oriented instructions, and controls various types of machinery or production through digital or analog input / output Process. It is the core of industrial control.

  singlechip

  Microcontrollers is a kind of integrated circuit chip, which uses VLSI technology to process data with CPU, ram, ROM, I / O ports and stop system, timekeeper / counter and other functions (may also include display drive circuit, PWM circuit, analog multiplexer, a / D converter It is a small and perfect microcomputer system integrated into a silicon chip, which is widely used in the field of industrial control. From the 1980s, from the then 4-bit and 8-bit single-chip computers to the present 300m high-speed single-chip computers.

  What is the difference between PLC and SCM in the development of control panel

  In order to find out what is the difference between PLC and SCM, I sum up and analyze it carefully. I think the difference between PLC and SCM should be:

  1. PLC is a relatively mature control system composed of single-chip microcomputer, and is the product of mature and stable single-chip microcomputer application system that has been debugged. It has strong universality.

  2. Single chip microcomputer can form a variety of application systems, with a wider range of application. As far as "single chip microcomputer" is concerned, it is only an integrated circuit, and it can only be used with other components and software systems.

  3. From the perspective of engineering application, for single project or projects with few repetitions, it is convenient to select PLC, with high success rate, good reliability, but high cost.

  4. For a large number of supporting projects, the single-chip microcomputer system has the advantages of low cost and high efficiency, but this requires considerable research and development efforts and industry experience to make the system stable.

  In essence, PLC is actually a set of single-chip microcomputer (single-chip microcomputer has a wide range) system.

  Zhongshan electronic control board http://www.52zymao.com/


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