PLC的可靠性很高且本身有很完善的自診斷功能,如果PLC出現(xiàn)故障,借助自診斷程序可以方便地找到故障的原因,排除后就可以恢復正常工作。
廈門岳航計算機工程有限公司
聯(lián)系人:李素云
企業(yè)QQ:2851195446,2851195466
手機:18965423501
座機:0592-5165501
大量的工程實踐表明,PLC外部輸入、輸出設(shè)備的故障率遠遠高于PLC本身的故障率,而這些設(shè)備出現(xiàn)故障后,PLC一般不能覺察出來,可能使故障擴大,直至強電保護裝置動作后才停機,有時甚至會造成設(shè)備和人身事故。停機后,查找故障也要花費很多時間。為了及時發(fā)現(xiàn)故障,在沒有釀成事故之前使PLC自動停機和報警,也為了方便查找故障,提高維修效率,可用PLC程序?qū)崿F(xiàn)故障的自診斷和自處理。
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