There are field trips in Dongshen, so you can contact Ji Chengxian to experience it first, and then pay after you feel satisfied. PLC, frequency converter, touch screen, Kingview, servo and so on, Siemens, Mitsubishi and Omron all have them. You can try it online first and lay a good foundation, so you can learn faster.

Plc learning is not difficult, everyone will have different habits and characteristics in programming, and we can't insist on consistency. But some good habits should be followed by most people. Firstly, the logical relationship and time sequence relationship are straightened out, and the program block diagram is compiled; Second, the main program, subroutine and interrupt program should be allocated reasonably; The third is to allocate registers reasonably and compile register symbol table.