Modbus协议在智能信号变送器中的应用  

Application of Modbus TCP Protocol in Intelligent Signal Transducer

作　　者：付青[1] 丁金华[1] 王辉[1] 王朋亮[1] 王炜富[1] 

机构地区：[1]大连工业大学机械工程与自动化学院,辽宁大连116034

出　　处：《仪表技术与传感器》2011年第6期26-28,共3页Instrument Technique and Sensor

基　　金：辽宁省教育厅2009-2010科学技术研究项目(2009A083)

摘　　要：针对工业上的需求,文中基于Modbus协议设计了一种嵌入式智能传输数据的仪表,CPU采用C8051F系列的微处理器,上下位机通过RS-485总线进行通讯。下位机采用C语言来编程,通过ADC和脉宽调制功能实现数据的采集和变换;上位机采用C#来开发Modbus协议通信软件,采用主线程和辅线程机制来实现Modbus协议通信,将数据显示在界面上,同时绘制数据的动态曲线图,方便观察数据,系统整体实用性较高。According to industrial needs,this paper designed an embedded intelligent data transmission instrument based on Modbus protocol.The CPU adopted C8051F series microprocessor,the upper and lower computer realized communication through the RS-485 bus.The lower computer adopted C programming language,through the ADC and pulse width modulation function to realize data collection and conversion,PC used C# to develop Modbus protocol communication software,used the main mechanism of urban-rural benefit readjustment and process to realize data communication based on Modbus protocol.It displays data in the host computer interface,while draws data on the dynamic graph,it is a convenient and practical system as a whole.

关 键 词：MODBUS协议 RS-485总线 C# 

分 类 号：TN915[电子电信—通信与信息系统] TP212[电子电信—信息与通信工程]