CAN总线接口模块的设计与实现

The Design and Realization of CAN Bus Interface Based

控制器局域网总线(CAN)是目前较流行的现场总线之一,是一种有效支持分布式控制或实时控制的串行通信网络。由于其高速、高可靠性及独立的设计,被广泛应用与工业现场控制系统中。本文以单片机AT89C51和SJA1000控制器为核心组成CAV总线接口模块。介绍硬件原理图和SJA1000的初始化、发送和接收模块程序的设计方法。

CAN (Contorller Area Network)is a kind of Field Bus which supports distributed control and real-time control.It has become useful of Field Bus due to its high speed,high reliability and independent design. This paper discussed the module of CAN interface make up of MCU AT879C51 and SJA1000 controller.It introduces hardware principle and the programme of initialization,transmition and receival of SJA1000