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faxhui
級別: 正式會(huì )員
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樓主  發(fā)表于: 2017-06-20 20:40
為什么 SDA 和RDA  或者SDB和RDB一短接就報警。。。。怎么回事
shourenflood
級別: 探索解密
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1樓  發(fā)表于: 2017-06-22 08:58
試試終端電阻不要接，我之前就是因為看說(shuō)明書(shū)上接了終端電阻，老是通訊出故障，時(shí)好時(shí)壞，后來(lái)一拆電阻就好了

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