| 基于Modbus协议的S7-200PLC主从结构的通信技术研究 |
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| 引用本文： | 武朝,徐聪,张文君.基于Modbus协议的S7-200PLC主从结构的通信技术研究[J].机械与电子,2011(4):26-29. |
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| 作者姓名： | 武朝 徐聪 张文君 |
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| 作者单位： | 1. 武汉理工大学机电工程学院,湖北武汉,430070
2. 武汉理工大学资源与环境工程学院,湖北武汉,430070 |
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| 摘 要： | 为了实现PLC的数据共享,提出了通过Modbus协议将2台PLC分别组建成通信主站和从站的方法,而且S7-200PLC自带Modbus通信协议库,可以方便地组建Modbus通信网络.根据Modbus协议的基本要求,对该网络的主站、从站的配置做了详细说明.实验结果表明,通信网络数据传输准确可靠,具有较高的实时性和稳定性.
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| 关 键 词： | Modbus协议 PLC 主站 从站 |
Research of Communication Between S7 - 200PLC Master and Slave Based on Modbus Protocol |
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| WU Chao,XU Cong,ZHANG Wen-jun.Research of Communication Between S7 - 200PLC Master and Slave Based on Modbus Protocol[J].Machinery & Electronics,2011(4):26-29. |
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| Authors: | WU Chao XU Cong ZHANG Wen-jun |
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| Affiliation: | 1.Mechanical and Electrical Engineering Academy,Wuhan University of Technology,Wuhan 430070,China;2.Resources and Environmental Engineering Academy,Wuhan University of Technology,Wuhan 430070,China) |
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| Abstract: | In order to achieve data sharing between PLC,we take them as communication master and slave with the Modbus protocol.And S7-200PLC has its own Modbus communication protocol library that can be easily used to set up Modbus communications network.This article explains the configuration of the master and slave in detail with the basics of Modbus protocol.Experimental results show that the data is accurate and reliable in this communication network and it has high real-time and stability. |
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| Keywords: | Modbus protocol PLC master slave |
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