基于单片机的Profibus-DP与Modbus协议转换设计实现 

张军1,2,3，叶海武1，褚云霞3 
1 人民电器集团有限公司 博士后科研工作站，浙江 乐清 325604；
2 河北工业大学 电器研究所，天津 300130；3 石家庄学院 计算机系，河北 石家庄 050035 
 

摘 要： 随着采用Modbus RTU 协议的设备越来越多，为能跟上网络自动化的发展，设计了一种Modbus 协议与Profibus-DP 协议转换装置，通过它实现Modbus 网络与Profibus-DP 网络互联。介绍Profibus-DP 和Modbus 两种现场总线的协议模型，分析了两种现场总线协议的转换方法，提出了转换器的电路设计和单片机系统软件设计，并通过实验证明了转换器数据转换的正确性和实用性。
关键词： 现场总线；Profibus-DP 协议；Modbus 协议；协议转换；SPC3 芯片
中图分类号：TN915.04 文献标识码：A 文章编号：1007-3175(2013)03-0016-05

Realization of Protocol Conversion Design Between Profibus-DP and Modbus Based on Singlechip 

ZHANG Jun1, 2, 3, YE Hai-wu1, CHU Yun-xia3 
（1 Workstation of Postdoctoral Scientific Research of People Appliances Group Co., Ltd, Yueqing 325604, China;
2 Electrical Apparatus Institute of Hebei University of Technology, Tianjin 300130, China;
3 Computer Department, Shijiazhuang University, Shijiazhuang 050035, China 
 

Abstract: Following more and more equipment in adoption of Modbus RTU protocol, this paper designed a kind of conversion device of Modbus protocol and Profibus-DP protocol in order to follow the development of network automation. The Modbus network was connected to the Profibus-DP network through the device. Introduction was made to protocol modes of Profibus-DP and Modbus of two kinds of field buses and analysis was made to the transfer method of two kinds of field buses. This paper raised transfer circuit design and software design of singlechip machine system. Experiment proved the correctness and practicality of data transfer.
Key words: field bus; Profibus-DP protocol; Modbus protocol; protocol conversion; SPC3 chip

参考文献
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