一种基于串行通信的设备联机状态检测方法  

a Method to Detect Connection between Control Device and Controlled Device Based on Serial Communication

作　　者：王勇[1] 

机构地区：[1]91550部队第240所

出　　处：《微计算机信息》2007年第06S期123-124,共2页Control & Automation

摘　　要：本文解决了基于串行通信的主控设备与被控设备之间的联机状态检测问题。利用定时器不断发送联机指令的方法,提出了一套联机状态检测的逻辑算法。该方法可在较短时间内(两秒)有效检测联机状态,这对于对联机状态要求苛刻的工业控制系统有着重要意义。This paper resolves the problem of detecting connection between control device and controlled device.A logical algorithm to detect connection is given by control device sending connecting commands to controlled device through timer continuously.This method is able to detect the disconnection quickly （within 2 second）.It is very important to the control systems which need strict requirement to detect connection status.

关 键 词：串行通信 定时器 联机状态检测 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]