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zxywkq
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樓主  發(fā)表于: 2011-01-03 20:23
一臺三菱FX2N-128點(diǎn)的PLC，現在有一問(wèn)題，從X0-X17的輸入指示燈通電就在不停的無(wú)規律的亂閃，我作過(guò)一個(gè)試驗，把X0-X17的輸入線(xiàn)接到X20以后的任意點(diǎn)上，相應的點(diǎn)輸入燈就不會(huì )亂閃，輸入信號也能正常的反應出來(lái)，從X0-X17上拆線(xiàn)后，相應的輸入燈也隨之熄滅恢復正常，請問(wèn)有誰(shuí)知道這是什么問(wèn)題，如何解決
yuxiaozhe18
鬼三
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1樓  發(fā)表于: 2011-06-16 22:26
應該是24v有間歇性短路的吧  com口是否連接正常

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