摘要
介绍了一种可供二次开发的嵌入式多协议网关(多协议转换器)的设计过程。该网关在物理层和数据链路层实现了CAN总线、RS485、RS232和以太网的通信功能,在此基础上可以快速地实现以上几种接口的高层协议并对其进行相互转换。该网关(协议转换器),在工业应用现场实际运行期间工作可靠稳定。
The designing procedure of an embedded multi-protocol gateway （ multi-protocol switch ） is introduced. It is applicable for the secondary development. The gateway has implemented communication functions of CAN bus, RS485, RS232 and Ethernet on both physical and data link layers. On this basis, higher layer protocol of these interfaces and switching between them can be realized rapidly.
出处
《自动化仪表》
CAS
2007年第3期8-12,共5页
Process Automation Instrumentation
关键词
嵌入式系统
现场总线
以太网
通信协议
网关
Embedded system Fieldbus Ethernet Communication protocol Gateway
