The main factor for the reliability of the PLC control system is to do a good job in the maintenance and management in the later period,and maintain the main parts of the equipment:power supply,external environment,installation status,power supply(Ps),central processing unit(CPU),signal template(SM))and peripheral equipment such as life component input,output intermediate relay,etc.
PLC控制系统的可靠性,其主要因素还是要做好后期的维护管理工作,维护设备主要部位:供电电源,外部环境、安装状态、电源(Ps)、中央处理单元(CPU)、信号模板(SM)及寿命元件输人、输出中间继电器等外围设备等
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