基于PROFIBUS-DP的串口设备群的集成方案与实现  

Integration methods and realization of multiple serial port devices based on PROFIBUS-DP

作　　者：王永华[1] 曹雪华[1] 徐群[1] 

机构地区：[1]郑州轻工业学院河南省信息化电器重点实验室,河南郑州450002

出　　处：《制造业自动化》2008年第7期44-46,58,共4页Manufacturing Automation

基　　金：河南省科技发展计划项目(07210220003);河南省教育厅自然科学研究项目(2007510025)

摘　　要：文章介绍了基于PROFIBUS/RS485总线桥的串口设备群的现场总线通信实验系统,描述了其工作原理;讲解了总线桥与PROFIBUS输入输出地址映射关系及其通信状态字和控制字的含义。设计了基于PROFIBUS-DP现场总线的串口设备群的集成方案,解决了主站和从站通信程序设计中的关键问题,给出了主站和串口设备从站通信的程序流程图,验证了通信系统的性能和可行性。实验结果表明:基于总线桥的串口设备群在集成到现场总线控制系统中时,可以满足可靠性和经济性的要求。Introduced a fieldbus communication experiment system which consists of multiple serial port devices based on PROFIBUS/RS485 fieldbus bndge, and described it＇s work principium. Explained I/O address mapping relation between fieldbus bridge and PROFIBUS, and per bits meanings of communication state and control bytes. Designed integration plan of multiple serial port devices based on PROFIBUS-DP, solved the key problems in the process of the communication programming between master and slaves, presented entire communication program chart of the master and serial port devices slaves, proved the communication system＇s performance and its realization, The laboratory debugging result showed that multiple serial port devices based on fieldbus bridge was been integrated to Fieldbus control system can fulfill the demands of dependability and economy.

关 键 词：现场总线 PROFIBUS 总线桥 串口设备群 工业通信 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]