Nowadays, the level of science and technology has been significantly improved. In order to better meet the production needs of various industries, more and more attention is paid to the application of electrical automation control systems. However, the current application of electrical automation control systems still has many problems and defects, and gradually cannot meet the needs of actual production. Therefore, in order to effectively solve this problem, PLC automatic control technology is introduced. Its application in electrical automation control systems not only improves system operating efficiency, but also brings many economic benefits and promotes the development of industrial automation. PLC applications are constantly enriched and improved in the field of electrical automation control. PLC control cabinet manufacturers have made outstanding contributions, especially in switching operations in the field of industrial automation control. With the continuous development of technology and the improvement of production requirements, the control functions of PLC control systems are becoming more and more powerful. Today's large-scale PLC control systems are comparable to DCS control systems.

The main applications of PLC in industrial control, such as numerical control, air conditioning, transportation, etc. For example, in the field of numerical control, it is the most widely used electrical automation control system, and its development prospects are very good. PLC automatic control technology is used to improve the accuracy of numerical control, thereby achieving strict control of each working parameter of the machine tool. The low-voltage power distribution cabinet supplier ensures that the machine tool works according to the desired trajectory. Applying PLC in the field of numerical control not only improves the accuracy of the numerical control system, but also avoids system errors that seriously affect the quality of production products. For example, in the field of air conditioning, the application of electrical automation control systems in the field of air conditioning is actually quite difficult, and it can be effectively alleviated by using PLC automatic control technology. Because the operation of the air conditioning system includes many control methods, for the entire control system, the control effect achieved by using PLC control technology is the best.

The application of PLC control technology can effectively shield external factors. The motor starts the control box to set the program for the user and execute each control program. Therefore, its application can significantly improve the operating efficiency of air conditioners, ensure that the system operation is consistent with the actual needs of users, and can also extend the maintenance cycle of air conditioners, giving users a better experience. The application in the transportation field is our most profound experience. When we drive on the road, we decide our own behavior according to the traffic lights, allowing us to strictly abide by the traffic rules. This is the benefit brought by the application of PLC automatic control technology to avoid accidents. In addition, the application of PLC automatic control technology is also widely used in metallurgy, chemical industry, petroleum, hydraulic power, electric power, building materials and other industries.

As mentioned above, PLC automatic control technology is applied in many fields. In fact, PLC has a large number of switching sequence controls in the industrial production process. It performs sequential actions according to logical conditions, and controls interlocking protection actions according to logical relationships, as well as a large number of discrete data collection. At first, these controls were controlled by relays to complete the tasks. It can be seen that the original PLC was created to replace relay control. Since the development of PLC control technology, its functions have also undergone tremendous changes. It is no longer the simplest logic control at the beginning. In addition, it also includes simulation calculations,