浅谈PLC控制系统抗干扰的措施及方法

Brief discussion on the measures and methods for anti-interference of PLC control system

介绍PLC控制系统在不同的工业环境中受到来自系统本身(包含PLC硬件及软件)以及外界(包含空间辐射电磁场、电源、信号线、接地等)的干扰;并且通过了解产生干扰的原因,提出了解决干扰的方法,进一步提高PLC控制系统可靠性。

The paper presents different interferences suffered by PLC control system including those from hardware and softward, electric magnetic field, power supply, signal wire and earthing. It puts forward the method solving the interferences afte analyzing the causes of interferences,increasing the reliabil- ity of PLC control system.