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韋正良
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樓主  發(fā)表于: 2010-11-17 20:53
PLC我打到運行擋,為什么PLC不工作,工作電壓是對的,之前還是好好的,一個(gè)多月不用今天拿出來(lái)一用什么就出現這樣呢?謝謝高手指點(diǎn)
zxywkq
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1樓  發(fā)表于: 2010-11-21 10:37
檢查一下指拔開(kāi)關(guān),是不是因為時(shí)間久了不用因為受潮而接觸不良或是電池接觸不良,還是因為電池沒(méi)電了而造成程序丟失

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