摘要
简要介绍了EPP并行口模式下读写数据的基本原理,CAN总线,以及一种独立的CAN控制器:SJA1000。给出了并行口与SJA1000连接以实现数据通信的硬件设计的结构图,并详细讨论了其软件实现的方法。这种通信方式具有传输数据快,距离远,灵活性好,纠错能力强,误码率低的特点,可以广泛应用于发电厂、变电站及配网自动化系统中。
The basic principles on read /write data in the mode of Enhanced Parallel Port, CAN Bus and a Stand-alone CAN controller(SJA1000) are introduced. The architecture figure of the hardware design of the connection between the parallel port and SJA1000 for communications is presented. Also the software design principles are described in detail. The communication mode can be widely applied in power plant, substation and distribution automation system which has the properties of high communication speed, long distance, good flexibility, strong error detecting ability and low error code rate.
出处
《中国仪器仪表》
2003年第4期13-16,共4页
China Instrumentation
