6ES7331-7KF02-0AB0
6ES7331-7KF02-0AB0
--------------**廈門莫格電氣自動(dòng)化有限公司**----------
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PLC死機(jī)原因解析摘要：引起PLC死機(jī)的原因很多，軟硬件的錯(cuò)誤都可能引起死機(jī)。本文詳細(xì)介紹了PLC死機(jī)的軟硬件方面原因。引起PLC死機(jī)的原因很多，軟硬件的錯(cuò)誤都可能引起死機(jī)。1、硬件方面（1）I/O竄電，PLC自動(dòng)偵測(cè)到I/O錯(cuò)誤，進(jìn)入STOP模式。（2）I/O損壞，程序運(yùn)行到需要該I/O的反饋信號(hào)，不能向下執(zhí)行指令。（3）擴(kuò)展模塊(功能型，如A/D)線路干擾或開路等。（4）電源部分有干擾或故障。（5）PLC的連接模塊及地址分配模塊出故障。（6）電纜引起的故障。2、軟件方面（1）觸發(fā)了死循環(huán)。（2）程序改寫了系統(tǒng)參數(shù)區(qū)的內(nèi)容，卻沒有初始化部分。（3）保護(hù)程序啟動(dòng)：硬件保護(hù)、限制使用時(shí)間(針對(duì)貨款收回)（4）數(shù)據(jù)溢出，步長(zhǎng)過大、看門狗(可修改DOG時(shí)間)動(dòng)作。
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