摘要
介绍采用RS-485总线的主从式数据通信系统的设计,上位机采用IBM-PC系列机,下位机采用8031单片机。这类系统可广泛应用于中小企业的分布式测控系统及区域范围内的收费系统。
In this paper,the design of a master slave data communication system based on RS 485 bus is introduced.The master is IBM PC.The slaves are microcontrollers based on MCS 51.It can be used in small distributed control systems and local collecting fee systems.
出处
《自动化与仪表》
1997年第3期31-33,共3页
Automation & Instrumentation
关键词
主从式
数据通信系统
总线
微机
软件
serial communication RS 485 bus distributed control system