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adidas
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樓主  發(fā)表于: 2008-10-01 16:05
PLC采用FX2N,通電后設備開(kāi)始運轉,大約1分鐘后,PLC的所有輸入輸出指示燈全部熄滅,但設備仍能運轉.將電源切斷重新上電,PLC輸入指示燈均不亮,無(wú)論怎么操作設備不動(dòng)作,查得PLC端子電源接點(diǎn)AC220V,DC24V電壓均正常(PLC的POWER燈亮),再次斷電重新上電,又出現開(kāi)始的現象,即能運轉,但一會(huì )后輸入輸出燈自動(dòng)熄滅....
這是怎么回事呢?謝謝!
liu735
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1樓  發(fā)表于: 2008-10-13 14:34
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