Introduced the appearance of Gumei EX2N series text PLC all-in-one machine and the functions of its components, the wiring and precautions of Gumei EX2N series text PLC all-in-one machine. Focus on the analog input and output of Gumei EX2N series text PLC integrated machine. And demonstrate the use of PLC through examples. Colleagues explained some common difficulties, solutions and various skills encountered by teachers during the course of using PLC
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