Key words: industrial automation instrument programming simple industrial control PLC

I. Introduction

5SHY3545L0016 3BHB020720R0002 3BHE019719R0101 GVC736BE101 Industrial automation control mainly uses electronic, electrical, mechanical, software combination to achieve. Industrial control, or factory automation control. It mainly refers to the use of computer technology, microelectronics technology, electrical means, so that the production and manufacturing process of the factory is more automatic, efficient, accurate, and has the control and visibility.

5SHY3545L0016 3BHB020720R0002 3BHE019719R0101 GVC736BE101

5SHY3545L0016 3BHB020720R0002 3BHE019719R0101 GVC736BE101 The emergence and spread of industrial control technology brought about the third Industrial Revolution, which increased the production speed and efficiency of factories by more than 300 percent. In the early 1980s, with the spring breeze of reform and opening up, foreign advanced industrial control technology into the Chinese mainland, more widely used industrial control products are “PLC, frequency converter, touch screen, servo motor, industrial computer” and so on. These products and technologies have greatly promoted the process of manufacturing automation in China and made great contributions to the construction of China’s modernization.

5SHY3545L0016 3BHB020720R0002 3BHE019719R0101 GVC736BE101

Two, industrial automation instrument

(1)PLC (Programmable logic Controller)

5SHY3545L0016 3BHB020720R0002 3BHE019719R0101 GVC736BE101 The English language of PLC-programmable Logic Controller is Programmable Logic Controller. In 1968, GM(General Motors) put forward the requirements to replace the relay control device: (1) simple programming, can modify and debug programs on the spot; ② Easy to maintain, using plug-in module structure; (3) Reliability is higher than relay control system; (4) the volume is smaller than the relay control device; ⑤ Data can be directly sent to the management computer; ⑥ The cost can compete with the relay control system; ⑦ can directly use 115V AC voltage input; ⑧ the output star for 115V, 2A above, can directly drive the solenoid valve, contactor; ⑨ strong versatility and easy to expand; ⑩ User program memory capacity at least 4B.

5SHY3545L0016 3BHB020720R0002 3BHE019719R0101 GVC736BE101

In order to achieve the requirements of General Motors, the first PLC(programmable logic controller) suitable for its requirements was successfully manufactured in 1969 in the United States, since the first appeared, followed by Japan, Germany, France also began the PLC research and development, and has been rapid development, At present, the main PLC manufacturers are Siemens and AEG in Germany, Mitsubishi in Japan, AB in the United States, GE and TE in France, etc.

5SHY3545L0016 3BHB020720R0002 3BHE019719R0101 GVC736BE101 The development, production and application of PLC are also fast, especially in application. In the late 1970s and early 1980s, our country introduced many foreign PLC with the foreign complete equipment, special equipment. Since then, in the traditional equipment transformation and new equipment design, the application of PLC increased year by year, and achieved significant economic benefits, PLC is more and more widely used in our country, to improve our industrial automation level played a huge role.