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小名嘟嘟
級別: 探索解密
精華主題: 0
發(fā)帖數量: 66 個(gè)
工控威望: 141 點(diǎn)
下載積分: 522 分
在線(xiàn)時(shí)間: 42(小時(shí))
注冊時(shí)間: 2019-11-24
最后登錄: 2025-04-14
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樓主  發(fā)表于: 2020-06-21 23:00
PLC先上電再插串口線(xiàn)，程序調試正常，但是直接斷電源后再上電時(shí)(串口通訊線(xiàn)一直插著(zhù))BD板的接收RD燈常亮，SD不亮，板子溫度急劇上升，這時(shí)拔掉串口線(xiàn)燈還亮，只有斷電源，請問(wèn)什么原因？
小名嘟嘟
級別: 探索解密
精華主題: 0
發(fā)帖數量: 66 個(gè)
工控威望: 141 點(diǎn)
下載積分: 522 分
在線(xiàn)時(shí)間: 42(小時(shí))
注冊時(shí)間: 2019-11-24
最后登錄: 2025-04-14
查看小名嘟嘟的 主題 / 回貼
1樓  發(fā)表于: 2020-06-21 23:18
按照先上電在插串口線(xiàn)時(shí)無(wú)異常，通訊也正常，板子應該沒(méi)問(wèn)題；但是去現場(chǎng)上機后肯定是隨時(shí)關(guān)機，串口線(xiàn)一直插著(zhù)的，還是哪里不對沒(méi)找到問(wèn)題。

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