基于SDLC协议的同步RS 485总线控制器的设计  

Design of Synchronous RS 485 Bus Controller Based on SDLC Protocol

作　　者：李果萍[1] 成龙[1] 柴波[1] 

机构地区：[1]西安微电子技术研究所,陕西西安710075

出　　处：《现代电子技术》2009年第4期152-154,共3页Modern Electronics Technique

摘　　要：提出一种基于SDLC协议的RS 485总线的通信控制器的设计思想。首先介绍SDLC协议、RS 485协议。接着介绍RS 485总线的工作方式及RS 485在使用过程中需要注意的问题。因其通信方式大多是半双工通信,解决其总线数据传输的冲突,即通信故障,就成了提高工作可靠性的关键和重点。这里就如何避免RS 485通信故障做了分析。The design thoughts of RS 485 communication controller based on SDLC, SDLC protocol and RS 485 protocol are introduced. The problems of working methods used in the process of RS 485 are needed to pay attention. Most of its means of communication is half- duplex communications, data transmission bus to resolve their conflict, that is communication failures, became key and focus of improving their reliability. How to avoid communication fault of RS 485 is analysed.

关 键 词：SDLC协议 RS 485 通信控制器 工作方式 通信故障 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]