MODICON PLC系统通讯中断故障分析与解决

MODICON PLC System Fault Analysis and Resolution of a Breakdown in Communications

茂名石化动力厂化学水装置为茂名乙烯提供合格、优质的二级脱盐水,PLC控制系统的作用举足轻重。针对MODICON厂家PLC系统突然突然出现三台上位机数据不刷新,并发出I/O通讯未准备好的报警;集成器(Hub)电源指示正常,连接灯(LINK)停止闪烁;通讯卡NOE的报警指示灯Fault、Kernel、Appl闪亮报警,操作人员不能控制现场设备等现象,分析故障原因,提出解决办法,达到了良好效果。

Maoming Petro-Chemical Power Plant in Maoming ethylene chemical water installations to provide qualified, high-quality two desalination of water, PLC control system plays an important role. PLC system for MODICON manufacturers suddenly appeared suddenly three host computer data is not refreshed, and issue I/O communications are not ready for alarm; Integrator （Hub） directed to normal power supply, the connection light （LINK） stop blinking; Communication NOE alarm Indicator Fault, Kernel, Appl flashing alarm, the operator can not control the field devices such phenomena, analyze cause of the malfunction, to propose solutions to achieve good results.