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.
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.

MVI56-PDPS

MVI56-PDPS

MVI56-PDPS

MVI56-PDPS

MVI56-PDPS

1 Industrial automation instrument
1.1 PLC(Programmable Logic Controller)
The English language of PLC Programmable Logic Controller is programmable logic controller. In 1968, GM(General Motors) put forward the requirement to replace the relay control device

① Simple programming, can modify and debug the program on site; @ 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 4kB.
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.
The development, production and application of PLC are also fast, especially in application. In the 1970s and in the 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 obtained significant economic benefits, PLC is more and more widely used in our country, to improve our industrial automation level played a great role.
At present, many Chinese scientific research institutions and factories in the development and production of PLC, such as Liaoning Radio No. 2 Factory, Wuxi Huaguang Electronics Company, Shanghai Xiangdao Electric Motor Manufacturing Company, Xiamen A-B Company, Beijing Heshi, Hangzhou Heshi, Zhejiang University Control and so on.