CANopen协议I/O设备子协议DS-401的解析  

Analysis on I/O Equipment Sub-protocol of CANopen Protocol

作　　者：邵世彪 宗鸣[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870

出　　处：《单片机与嵌入式系统应用》2016年第7期31-35,共5页Microcontrollers & Embedded Systems

摘　　要：CANopen协议是一种基于CAN总线通信技术的标准应用层协议。整个协议以CiA DS-301为基础,规定了一系列的设备子协议,其中一般I/O设备子协议CiA DS-401目前在CANopen设备中使用最为广泛。本文首先对DS-301协议中的几种预定义通信对象在该设备子协议中的特性进行了分析,着重讨论了数字量输入、输出和模拟量输入、输出四种过程模型,并结合实例说明了实现该设备子协议的一般步骤。The CANopen protocol is a standard application layer protocol based on CAN bus communication technology. The entire proto- col is based on CiA DS-301 ,which provides a series of equipment sub-protocol. The general I/O device profile CiA DS-401 is widely used in the current CANopen devices. This article firstly analyzes the characters of several predefined objects in the DS-301 protocol, and focu- ses on discussing the four process model including the digital input and output and the analog input and output. Combined with an exam- ple, the general steps of implementing the sub protocol are described.

关 键 词：CANOPEN协议 设备子协议 I/O设备 数字量 模拟量 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]