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lushushan123
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樓主  發(fā)表于: 2018-08-25 09:50
求指教   232   485接線(xiàn)方式 都講講    謝謝+3分
二手工控電器
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1樓  發(fā)表于: 2018-08-25 10:00
RS-232通訊正常情況下接線(xiàn)方式是3 2 5對2 3 5，
RS-485通訊正常情況下是R+對R+，R-對R-，
現在就看樓主給不給3分
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