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jiangzhuang
大家共同學(xué)習嘛！這樣菜鳥(niǎo)也可以變老鳥(niǎo)
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樓主  發(fā)表于: 2011-02-22 22:11
西門(mén)子S7-200 CPU226 不帶CN的PLC說(shuō)是電源有問(wèn)題給我玩玩。。最近有時(shí)間修好了電源、就在今天準備下載程序玩玩時(shí)發(fā)現通信連接不上《通信協(xié)議沒(méi)得問(wèn)題、我也把他請過(guò)來(lái)弄了還是連接不上》！重新拆下來(lái)檢查了三塊板子沒(méi)發(fā)現什么異常！還檢測了RS-485借口周邊的元件也發(fā)現沒(méi)有什么變質(zhì)的��！實(shí)在沒(méi)轍��！還請家園里面的高手幫忙解決�。。�！先謝謝啦�。。。ㄖ档酶吲d的是程序沒(méi)丟）
[ 此帖被jiangzhuang在2012-03-03 21:03重新編輯 ]
niningtt
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1樓  發(fā)表于: 2011-02-24 19:04
s7-200PLC如過(guò)程序中有用到通訊口的話(huà)，連接下載不了，需停止程序執行
樓主留言：
現在就單獨PLC， 轉到STOP還是下能下載
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