| 通信协议宏在RS-485总线通信中的应用 |
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| 引用本文： | 曹辉,霍罡,谢满江. 通信协议宏在RS-485总线通信中的应用[J]. 制造业自动化, 2003, 25(11): 55-58 |
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| 作者姓名： | 曹辉 霍罡 谢满江 |
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| 作者单位： | 北京联合大学生物化学工程学院,北京,100023 |
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| 摘 要： | 从系统构成和通信软件编程两方面详细介绍了一种基于RS-485通信网络的分散式变频制冷控制系统的设计方案，主要是以富士变频器的RS-485通信协议为基础，利用CX—Protocol软件编写了由设定参数、运行命令和监测数据等3个通信序列构成的RS-485串口通信协议宏，实现了单台OMRON CQM1H可编程序控制器与6台变频器的串行通信控制，并能实时监测各变频器的运行状态，最终达到较好的制冷效果。
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| 关 键 词： | RS-485总线通信 通信协议宏 可编程序控制器 变频器 制冷 空调系统 |
| 文章编号： | 1009-0134(2003)11-0055-04 |
| 修稿时间： | 2003-05-13 |
The application of the communication protocol macro in bus communication of RS-485 |
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| CAO Hui,HUO Gang,XIE Man-jiang Biochemical Engineering College of Beijing Union University,Beijing ,China. The application of the communication protocol macro in bus communication of RS-485[J]. Manufacturing Automation, 2003, 25(11): 55-58 |
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| Authors: | CAO Hui HUO Gang XIE Man-jiang Biochemical Engineering College of Beijing Union University Beijing China |
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| Affiliation: | CAO Hui,HUO Gang,XIE Man-jiang Biochemical Engineering College of Beijing Union University,Beijing 100023,China |
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| Abstract: | The design scheme of a distributed inverter refrigeration control system based on RS-485 communication network is introduced emphatically from system structure and writing communication program. On base of communication protocol of RS-485 used for FUJI inverter, the serial communication protocol macro of RS-485, which always consists of three communication steps including setting communication parameters, running instructions and monitoring data, is developed by means of CX-Protocol. Furthermore, a OMRON CQM1H PLC controls six inverters by serial communication and monitors real-time the running status of all inverters. Finally the result of refrigeration is good. |
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| Keywords: | bus communication of RS-485 PLC inverter refrigeration communication proto |
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