| Profibus-PA总线系统结构及其接口模块设计 |
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| 引用本文： | 徐春玲,凌志浩,王秀英.Profibus-PA总线系统结构及其接口模块设计[J].自动化仪表,2007,28(8):32-35. |
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| 作者姓名： | 徐春玲 凌志浩 王秀英 |
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| 作者单位： | 1. 上海新侨职业技术学院,上海,200237;华东理工大学信息科学与工程学院,上海,200237
2. 华东理工大学信息科学与工程学院,上海,200237 |
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| 摘 要： | 分析了Profibus-PA的系统结构,讨论了支持Profibus-PA的接口模块设计的合适方案,介绍了变送器的Profibus-PA接口电路设计、SPC4芯片的应用、双口RAM的应用以及对数据存取须注意事项,叙述了Profibus-PA接口的通信过程和相关软件的设计方法。结合本安防爆技术所从事的Profibus-PA总线接口模块设计,为适应本安环境的现场总线传感器、变送器产品的开发提供了一种接口技术和解决方案。
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| 关 键 词： | 本质安全 接口模块 协议芯片 数据处理 变送器 |
| 修稿时间： | 2007-06-29 |
Structure and Interface Module Design of Profibus-PA Fieldbus System |
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| Xu Chunling,Ling Zhihao,Wang Xiuying.Structure and Interface Module Design of Profibus-PA Fieldbus System[J].Process Automation Instrumentation,2007,28(8):32-35. |
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| Authors: | Xu Chunling Ling Zhihao Wang Xiuying |
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| Abstract: | The structure of Profibus-PA fieldbus system is analyzed, and the proper schemes to support the interface module design of Profibus-PA are discussed. The design of Profibus-PA interface circuit for transmitter, the application of SPCA chip and the application of dual-port RAM, as well as the cautions on data access are introduced. The communication process of Profibus-PA interface and the design method of correlative software design are discussed. Combining with the technologies of intrinsic safety and explosion-proof, specific Profibus-PA fieldbus interface module is designed. This provides a suitable interfacing technology and solution for the development of transducers and transmitters operating under intrinsic safety environment. |
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| Keywords: | Intrinsic safety Interface module Protocol chip Data Processing Transmitter |
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