RS485总线型即插即用技术研究及实现  

RS485 bus plug and play technology research and Implementation

作　　者：张加易 柏思忠 

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400039

出　　处：《自动化与仪器仪表》2016年第8期87-88,共2页Automation & Instrumentation

基　　金：重庆院青年基金创新项目基金资助(2014QNJJ)

摘　　要：针对RS485通信总线型拓扑结构从设备自动分配地址和即插即用的难题,采用了从设备自动控制总线通断的方法来实现自动分配地址;采用新增从设备进行实时监听在线信息自动设置地址的方法来实现即插即用。主设备发现总线异常后发送清除地址命令恢复所有从设备到初始状态。经过长时间现场试验验证,RS485总线型即插即用技术现场使用灵活方便、稳定可靠。According to the RS485 communication bus topology from equipment automatic address assignment and plug problem, take the method of automatic control equipment bus on-off to realize automatic address assignment;take the new real-time online monitoring method for automatically setting the address information from the device to realize the plug and play. Once the main equipment found abnormal bus it send clear address command to restore all the equipment from the state to the initial. After a long time of field test, RS485 bus plug and play technology is easy to use, stable and reliable.

关 键 词：RS485 总线型 自动分配地址 即插即用 

分 类 号：TD76[矿业工程—矿井通风与安全]