Problems of Anti-interference for PLC Control System

In the paper,it is analysed the electromagnetic interferences and its mechanism on the interferences of PLC control system,and pointed out that the anti-interference performance of control system must be considered overall in the engineering applications.Moreover,it is discussed the interfering signal generated by electrical equipment,and several effective specific measures to resist interference generated by electrical equipment are put forward based on electromagnetic compatibility(EMC) and installation specifications of PLC,as well as combined with the project.