Ordinary property electricians do not need to learn plc. Small plc is a kind of control equipment between relay control and program control. The owner of dry goods is lighting installation electrician, which is the most basic electrician. Ordinary electricians belong to the maintenance electrician series. The most basic introduction is 1 lighting installation, and then they learn low-voltage power distribution and common electrical measuring instruments. In-depth is the common 3 electromechanical control will use simple electronic knowledge (equivalent to the past machine tool electrician). After that, you will generally learn 4 relay protection and control, more complicated primary and secondary circuits, motors and drives, which require solid knowledge of electrical control and electrical circuits. Then on this basis, the relay circuit is transferred to plc control and programming, and plc programming uses relay control diagram-ladder diagram.

Generally, level 2 can take bacon home, and level 3 can take apprentices. By level 4, you will basically enter the ranks of senior maintenance electricians, and if you learn better, you will reach the level of technicians. 5 is the content of technicians and senior technicians. Technician is equivalent to the level of electrical assistant engineer and senior technician is equivalent to the level of electrical engineer.