You need to know the relay control circuit first, and you can look at the ladder diagram. This is the basis of electrician. Understand the first two items, PLC learning is simple. When learning PLC, choose a common PLC model as the learning target, such as Mitsubishi Fx series or Siemens S7-200 system. Understand the input and output points and connection modes of this kind of PLC. Then download and install the programming software of PLC. Familiar with the operation of software and the use of common instructions. Finally, turn your relay control circuit into a ladder diagram (such as the simplest star triangle start). Now you can write a ladder diagram on the software. This process is the same as connecting relay circuit, except that connecting wires are used instead of wires in software. After the software is written, download it to PLC and connect external circuits (buttons, etc.). ) Go and run. You can't connect the load first Yes, all PLCs have I/O indicator lights. You can judge whether the program is correct by looking at the state of the lights, so that your first program is completed. Of course, you need a good textbook. You can go to Xinhua Bookstore to have a look. PLC programming manual and hardware manual are also essential.

Dongxun Automation is a formal strength training institution approved by Dongguan Industrial and Commercial Bureau. Considering the convenience of students' travel and riding, the technical training center chose the Xinyou Communication Building opposite the Cheng Nan bus station (opposite the entrance of the station), which is the most prosperous traffic artery in Dongguan. We pay attention to the learning environment and teaching equipment, and use the office building with strong learning atmosphere as the classroom. All classrooms are uniformly equipped with air conditioning and cold air supply. Ensure that every student has a comfortable learning environment in the hot summer, and ensure that every student has an independent training equipment. The school also provides dormitories for students. 200 yuan, four students a month's dormitory, do not have to bear the utilities. There is a canteen downstairs for dinner, lunch and dinner. Six yuan per meal. We specialize in training Mitsubishi and Siemens. We mainly train PLC function instruction application and finishing operation+touch screen programming+frequency conversion control system+encoder use+servo precise positioning control+step control system+analog constant temperature/constant pressure control +PID application technology+proximity/photoelectric/color sensor use, Siemens S7-200 and S7-300-400. After the completion of the study, the certificate of completion of Dongxun Automation High-tech Training Center will be issued, or the certificate of PLC designer or electrical engineer will be issued by the Ministry of Labor, with authoritative certification and online inquiry, which is universal in China. Our training website.