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RS-485


RS-485是RS-422的升級版,能夠連接32個接口設備。RS-485是一種雙線,半雙工,多點串行連接的電路標準。它可配置便宜的本地網絡和多站通信連結。它還能提供很高的數據傳輸速度(高達10Mbit/s),並且由於使用雙絞線採用差分傳輸方式,通信距離可長達1200米。RS-485只規定了平衡驅動器和接收器的電特徵。而不規定和推薦任一數據協議。

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