简单介绍了HART通信协议的物理层、数据链路层、应用层的规范。
The specifications of physical, data link and application layers of HART communication protocol are introduced briefly.
研究了CAN网络协议的技术规范,描述了CAN总线的分层结构中的数据链路层和物理层。
Technical regulation of CAN Bus network is lucubrated and Data Link Layer and Physical Layer in hierarchy structure of CAN Bus is described.
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