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樓主  發(fā)表于: 2016-02-28 20:44
遇到一個(gè)棘手的問(wèn)題，公司一個(gè)污水處理系統，plc是s7-200 CPU226，plc后面接了幾個(gè)EM223-1PL22-0XA0擴展模塊，當程序自動(dòng)運行的時(shí)候模塊上的點(diǎn)指示燈亮正常，但是輸出點(diǎn)Q沒(méi)有電壓�；蛘邞摰�220v實(shí)際只有幾十伏的電壓。模塊上M、L+、1L點(diǎn)的電壓都正常。但輸出的電壓就是不正確。求高手幫忙解答。謝謝
最遠是多遠
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1樓  發(fā)表于: 2016-02-29 14:43
火線(xiàn)接線(xiàn)端子沒(méi)壓緊或接觸不良吧
szhong1
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2樓  發(fā)表于: 2016-02-29 16:28
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