3HNM 08225-1 COMPRESSION SPRING ABB 采用短消息

3HNM 08231-1 SCREW-IN CONNECTOR
3HNM 08253-1 COVER, PAINTED
3HNM 08283-1 HORIZONTALARM HW 1620
3HNM 08285-1 DRIVE SHAFT S4
3HNM 08286-1 DRIVE SHAFT S5
3HNM 08287-1 DRIVE SHAFT S6
3HNM 08291-1 2K-MIXER

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Description

CAN总线

CAN总线最早是由德国Bosch公司推出,用于汽车内部测量与执行部件之间的数据通信协议。其总线规范已被ISO国际标准组织制定为国际标准,并且广泛应用于离散控制领域。它也是基于OSI模型,但进行了优化,采用了其中的物理层、数据链路层、应用层,提高了实时性。其节点有优先级设定,支持点对点、一点对多点、广播模式通信。各节点可随时发送消息。传输介质为双绞线,通信速率与总线长度有关。CAN总线采用短消息报文,每一帧有效字节数为8个;当节点出错时,可自动关闭,抗干扰能力强,可靠性高。

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