| 基于RS485总线的分布式PLC监控系统通信设计 |
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| 引用本文： | 陈久松,朱政,尹卫平,李鸣.基于RS485总线的分布式PLC监控系统通信设计[J].自动化与仪器仪表,2012(1):51-53,56. |
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| 作者姓名： | 陈久松 朱政 尹卫平 李鸣 |
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| 作者单位： | 扬州电力设备修造厂 江苏扬州,225003 |
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| 基金项目： | 国家自然科学基金（60874075）; 江苏省教育厅自然科学基金（07KJB520139） |
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| 摘 要： | 结合西门子S7-200系列PLC的特点,介绍了由PLC和计算机构成的分布式监控系统,分析了RS232和RS485的通信方式及通信原理,着重阐述了系统的硬件连接、通信协议和利用VB实现计算机与PLC的通信方法,并给出了详细的程序设计过程。该系统对于用计算机对PLC实现数据集中采集、监控提供了可靠的手段。
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| 关 键 词： | RS485 PLC 通信 VB |
Design of communication with distributed PLC monitor and control system based on RS485 bus |
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| Affiliation: | CHEN Jiu-song, ZHU Zheng, YI Wei-ping, etal. |
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| Abstract: | Combination of Siemens S7-200 series of PLC characteristics,Introduced by PLC and a computer distributed control system,Analysis of RS232 and RS485 communication method and communication theory,focuses on the system hardware connection,communication protocols and realization by VB computer and PLC communication method,and gives a detailed program design process.The system for the computer to PLC implementation of centralized data acquisition,monitoring provides a reliable means of. |
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| Keywords: | RS485 PLC Communication VB |
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