Programmable Controller (PLC): The so-called PLC system is designed by adopting programmable controller manufactured by major industrial control manufacturers in the market, selecting different modules according to requirements, designing programs based on this Realizes the function. This foam is currently most widely used in industrial land. PLC Reliability: All CPUs used in imported PLCs are special industrial grade processors specially designed by the manufacturer. The remaining components are also purchased directly from the manufacturer. After careful selection of industrial grade components, their power modules are also integrated. Specially designed by the experience of industrial control of large enterprises, the anti-interference function, especially the anti-interference function of power supply, has been greatly improved, and it works well even under the interference of insufficient power supply and frequency conversion speed adjustment. I will. PLC Scalability: To add a function, simply add the corresponding module and modify the corresponding program. PLC programming is relatively easy and shortens the development cycle. PLC maintainability: The PLC itself has a powerful self-diagnosis function. When a system fails, self-diagnosis makes it easy to diagnose the failing component. It can be repaired even by non-specialists. In case of bad program design due to failure, it provides a complete debugging tool. Finding an obstacle is relatively easy.Operation: PLC operation adopts touch operation terminal, man-machine interface, full screen display, and very detailed operation guide is designed. Even the first time use, the prompt operation makes it easier for the operator to reduce the requirements of the average worker. In addition, if the system fails, the screen automatically switches to the failure prompt screen, which shows the cause of the failure and how to troubleshoot. It is also possible to display the failure location of the machine, and maintenance staff can quickly resolve the failure. PLC Control: Advantages, PLC is a controller that has been tested in practical applications for decades, with strong anti-interference ability, low failure rate, easy equipment expansion, short development cycle. Cons: Higher cost than single chip microcomputer.