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

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

CLC Number: 

• TP393.04