You can find Ji Cheng in Suzhou, and Ji Cheng has set up an offline office in Suzhou. You can Baidu Ji Cheng first, and then go to websites, mainly Mitsubishi, Siemens and Omron. If there is no foundation, learn Mitsubishi first. Mitsubishi is easier, and it is a small plc.

Plc is a digital operation electronic system specially designed for industrial environment application. As long as it involves control, it is inseparable from plc, and the future development prospect will be better and better.