微机系统与单板机的串行实时通讯

• 作 者: 陈小敏
• 机 构: 清华大学
• 出 处: 计算机应用
• 发表日期: 1987年03期
• 关键词: 单板机 实时通讯 数据通讯 工业控制 微型计算机系统 分布系统 微机控制系统 微机系统 历史资料 串行通讯

一、问题的提出以 Z80为 cpu 的单板机目前在工业控制和检测方面得到了广泛的应用,实际生产中的控制情况和监测结果往往要由前级单板机送到后一级的微型计算机系统,做进一步的数据处理,或者作历史资料存盘,或打印出一系列的报表和图形,以供指导生产用。前级机的数量多于一台时,就形成了所谓的二级分布系统。而构成二级系统,就必须解决前级机与后级机的实时数据通讯问题。

First, the issue raised Z80 cpu board machine is currently in industrial control and testing has been widely used, the actual production control and monitoring results are often sent by the previous single-chip microcomputer to the latter level of micro Computer system, to do further data processing, or to save historical data, or print out a series of reports and graphics for the guidance of production. When the number of front-end machines is more than one, a so-called secondary distribution system is formed. To form a secondary system, it is necessary to solve the problem of real-time data communication between the front-end machine and the rear-end machine.