摘要： 提出多帧控制协议和节点互访协议，讨论了两种协议在CAN协议上的实现及报文调度方法。采用多帧控制协议对多帧报文进行传输控制。节点互访协议采用存储区映射的方法来建立节点之间的逻辑联系，借鉴了MODBUS协议请求/应答形式的数据通信方法。实验表明该设计应用于电梯控制系统，能充分满足性能指标要求。
关键词:
CAN总线,
多帧控制协议,
节点互访协议,
MODBUS协议
Abstract:
Multi-frame control protocol and node exchange visiting protocol are presented. This paper discusses the way of implementing the two protocols on CAN protocol and the method of message scheduling. Multi-frame control protocol is used to control transporting multi-frame messages. Node exchange visiting protocol adopts memory mapping to establish the logic relationship among nodes. Node exchange visiting protocol also consults request/response communication model used by MODBUS protocol. This design is applied to elevator control system, and it shows good capability.
Key words:
CAN bus,
multi-frame control protocol,
node exchange visiting protocol,
MODBUS protocol
中图分类号:
许 杭;白瑞林;严 惠. CAN总线上层协议的设计[J]. 计算机工程, 2007, 33(24): 258-260.
XU Hang; BAI Rui-lin; YAN Hui. Design of Higher Layer Protocol Based on CAN Bus[J]. Computer Engineering, 2007, 33(24): 258-260.