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yyj333
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樓主  發(fā)表于: 2017-04-25 17:37
s7-200 PLC 224CN的
PLC只接了電源220V,撥動(dòng)運行開(kāi)關(guān),PLC顯示的燈沒(méi)有變化,是不是PLC壞了。
輸入輸出什么線(xiàn)都沒(méi)有接,這個(gè)PLC拆下來(lái)的時(shí)候,上面接了幾個(gè)輸入輸出模塊的,PLC里面有程序,以前的設備是好的,有幾年閑置沒(méi)用了,我拆下來(lái)準備學(xué)習的,可是PLC運行不了。不知道是什么問(wèn)題。

用電腦連接PLC也沒(méi)有成功,我想了解一下這個(gè)PLC是不是壞了。會(huì )是什么問(wèn)題呢。

撥動(dòng)PLC上面的運行開(kāi)關(guān),燈好像沒(méi)什么變化
什么的3個(gè)圖是 3種狀態(tài)的時(shí)候拍的。運行 測試 停止 狀態(tài),燈視乎沒(méi)變化



cjm1234
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1樓  發(fā)表于: 2017-04-26 12:10
先把通訊口氧化物清理,通電與電腦連接試試。

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