基于令牌竞争的半双工现场总线地址自动分配研究  

Automatic Address Assignment of Half-duplex Fieldbus Based on Token Competition

作　　者：王子浩 

机构地区：[1]武汉理工大学自动化学院,湖北武汉430070

出　　处：《工业控制计算机》2023年第9期95-96,111,共3页Industrial Control Computer

摘　　要：半双工现场总线的多机通信中,各分机的地址采用自动分配机制,能减少现场安装调试中的设置工作。研究采用令牌竞争方式进行地址自动分配,可以加快地址分配速度,减少总线占用时间,提高通信效率,同时还可以在不增加硬件条件下,扩展各类半双工模式的现场总线功能,突破单主机的局限性,实现多主机并存。In multi-computer communication of half-duplex fieldbus,the address of each extension is assigned automatically,which can reduce the setup work in field installation and debugging.In this paper,token competition method for address automatic allocation is studied,which can speed up address allocation,reduce bus occupation time and improve communication efficiency.At the same time,it can also expand the function of various half-duplex fieldbuses without additional hardware,break through the limitation of single host and achieve multiple hosts's co-occurrence.

关 键 词：现场总线 RS-485 半双工 MODBUS 自动分配地址 令牌 

分 类 号：TN915[电子电信—通信与信息系统]