The full name of the SPS is Programmable Logic Controller (Programmable Logic Controller)<br>Computers, communication, electrical control and other technologies are electronic systems for digital computers, which have been developed for industrial environments and become core equipment for the realization of individual, workshop and factory automation. Initially, the SPS function was mainly used for simple logic control. With the rapid advancement of electronic technology, its control function has developed into a more complex process control and continuous control. It has become one of the three main technical pillars in the field of automation control [21]. The development results of computer technology are applied more strongly to the development and design of SPSen, the computing performance of SPS is increasing and the storage capacity is increasing. With the further development of the SPS functions, the application spectrum becomes more and more extensive. The SPS is currently widely used in various industries such as mechanical engineering, control and equipment tools, three-dimensional bearings, machine tools, culture and entertainment, and is gradually being extended to other industries.<br>
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