基于RS-485总线实现的远距离多机主从式通信技术  

Long-Distance Range Mul-Machine Hosts Realizes Communication Based on RS-485 Bus

作　　者：樊宇[1] 程全[1] 

机构地区：[1]周口师范学院物理系,河南周口466000

出　　处：《工业控制计算机》2006年第7期71-71,73,共2页Industrial Control Computer

摘　　要：介绍了采用RS-485串行通信协议实现的多机主从式通信的一种思路,并对电路中串行收发芯片MAX487的性能及使用方法进行了详细的说明;同时对设计中硬件电路和软件设计思想及主从机的工作状态进行了分析和论述。This paper introduces the RS-485 serial communication agreement realization mul-machine hosts from the type correspondence one kind of mentality,and the serial receiving and dispatching chip MAX487 performance and the application method have carried on the detailed explanation in the electric circuit,Meanwhile to designe the hardware circuit and the software method and the host the working mode active status has carried on the analysis and the elaboration from machine.

关 键 词：MAX487 RS-485 AT89C52 MAX232 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]