基于MSG指令的核电站PLC数据采集系统的故障处理

Fault Handling of Nuclear Power Plant PLC Data Acquisition System Based on MSG Instruction

岭澳核电站的数据采集系统从投运以来一直存在采集板件偶发脱机的故障,且故障情况下可编程逻辑控制器(PLC)采集无法自动复位。本系统的PLC程序与上位机采用了一体化设计,无法单独修改PLC程序,通过外接PLC装置利用MSG指令,通过一种远程使用MSG指令复位的方式实现了PLC脱机故障的处理,成功地解决了原系统LEVEL1层PLC程序无法修改的难题。

Ling＇ao Nuclear Power Station data acquisition system is responsible for the analog and digital data acquisition for the whole plant equipment. There has been sporadic offiine fault of data acquisition board and a fault condition PLC acquisition can not be automatically reset. Because the system＇s PLC program and PC with an integrated design, modifying PLC program alone is impossible. Through the use of an external PLC device MSG instruction and the MSG instruction reset remotely by means of a process to achieve the offiine PLC Fault, solved the problem that original system LEVEL1 layer PLC program can not be modified.