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2、傳輸距離遠（最遠10Km），傳輸速率快（1MHz bps）；
3、節點數量最多可達110個。
4、采用短幀結構，每一幀的有效字節數為8個；
5、實時性高，非破壞總線仲裁技術，優先級高的節點無延時；
6、出錯的CAN節點會自動關閉并切斷和總線的聯系，不影響總線的通訊；
7、報文為短幀結構并有硬件CRC校驗，受干擾概率小，數據出錯率極低；
8、通訊介質可用普通的雙絞線，同軸電纜或光纖等；
9、可以點對點，一點對多點及全局廣播幾種傳送方式接收數據。
RS485接口標準特點：
（1） RS-485的電氣特性：邏輯“1”以兩線間的電壓差為+（2-6）V表示；邏輯“0”以兩線間的電壓差為-（2-6）V表示。接口信號電平比RS-232-C降低了，就不易損壞接口電路的芯片，且該電平與TTL電平兼容，可方便與TTL 電路連接。
（2） RS-485的數據傳輸速率為10Mbps
（3） RS-485接口是采用平衡驅動器和差分接收器的組合，抗共模干能力增強，即抗噪聲干擾性好。
（4） 因RS-485接口具有良好的抗噪聲干擾性，長的傳輸距離和多站能力等上述優點就使其成為的串行接口。
區別：
1、速度與距離
2、錯誤檢測機制
3、價格與培訓成本
4、總線利用率
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