| 基于CAN总线的智能仪表组网技术 |
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| 引用本文： | 曹军义,曹秉刚.基于CAN总线的智能仪表组网技术[J].化工自动化及仪表,2004,31(3):35-38. |
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| 作者姓名： | 曹军义 曹秉刚 |
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| 作者单位： | 西安交通大学,机械工程学院,陕西,西安,710049;西安交通大学,机械工程学院,陕西,西安,710049 |
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| 摘 要： | 为满足设备级通信的实时性、可靠性和互操作性 ,提出基于CAN现场总线的智能仪表组网技术。通过分析CAN总线和RS 485总线的特点 ,设计了CAN总线多功能集中器和网络通信协议。设计的CAN总线多功能集中器可以与上位机 (PLC或PC等 )通过CAN总线通信 ,也可通过RS 485与网络底层仪表通信 ,并可动态显示仪表状态和在线修改组态参数
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| 关 键 词： | CAN 通信协议 智能仪表 互操作性 |
| 文章编号： | 1000-3932(2004)(03)-0035-03 |
| 修稿时间： | 2004年2月12日 |
Network Technology of Intelligent Instruments Based on CAN Bus |
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| CAO Jun-yi,CAO Bing-gang.Network Technology of Intelligent Instruments Based on CAN Bus[J].Control and Instruments In Chemical Industry,2004,31(3):35-38. |
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| Authors: | CAO Jun-yi CAO Bing-gang |
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| Abstract: | Network technology of intelligent instruments based on fieldbus is introduced.The building-network technology of intelligent instruments based on CAN bus is proposed,in order to meet the demands of device level communication,such as real-time,reliability and interoperability.After analyzing the features of CAN bus and RS-485,multifunctional concentrator and network communication protocol is designed.The newly designed concentrator can not only implement multi-master communication with other nodes,which include PC and PLC,but also implement master-slave communication with device level instruments through RS-485.Furthermore,it can display dynamically the status of instruments and modify the configuration parameters of instruments on-line. |
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| Keywords: | CAN communication protocol intelligent instruments interoperability |
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