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魯文軍
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樓主  發(fā)表于: 2010-11-08 12:01
與PLC的通訊時(shí)好時(shí)壞，有時(shí)觸摸屏（MT510）像是死機（改閃的不閃改計數的不計數），公司工程師把屏的電源線(xiàn)﹣線(xiàn)撤掉，屏照常顯示，他說(shuō)是通訊線(xiàn)接地了，但是我把另一臺正常的觸摸屏照著(zhù)他的方法做了一遍，結果一樣，請問(wèn)把觸摸屏的電源負線(xiàn)撤掉，屏照常工作是怎末回事？

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