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yanshanyi
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樓主  發(fā)表于: 2015-07-01 15:49
公司里面的S7-300有一個(gè)數字輸入模塊的輸入端是用接近式傳感器來(lái)導通的,現在發(fā)現有一個(gè)接近式傳感器短路了,造成該輸入模塊的全部點(diǎn)都沒(méi)有輸入(輸入顯示燈全都不亮),而其他數字輸入模塊正常,把短路的接近開(kāi)關(guān)拆掉后,該輸入模塊就正常了。所以有點(diǎn)疑問(wèn)是不是輸入模塊自身帶有短路保護。
[ 此帖被yanshanyi在2015-07-01 16:40重新編輯 ]
wuwm_1974
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1樓  發(fā)表于: 2015-07-01 16:19
什么輸入模塊啊?數字輸入的話(huà),是測量電壓的。你的傳感器短路了,是不是輸入電壓不夠了模塊就沒(méi)有輸入了?估計和電源有關(guān)系。

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