PROFIBUS和MODBUS协议互连方法的研究

Research on Interlinking Method between PROFIBUS and MODBUS Protocol

在介绍了PROFIBUS和MODBUS两种现场总线协议模型的基础上 ,探讨了PROFIBUS和MODBUS两种现场总线的协议下协议下的网络互连技术与协议转换模型 .在不改变原有的网络体系结构的条件下 ,采用网关进行协议转换 ,构建了自低层向高层逐层进行的协议转换模型 .同时也给出了网关实现的具体软、硬件设计方法 。

In this paper, the protocol conversion mode between Profibus and Modbus protocol is discussed based on the research in the two kinds of fieldbus. The interlinking technology and conversion model are studied. Without changing the net structure and with the gateway applied to perform the conversion, the interlinking model is constructed from bottom to top level. The outline of gateway implementation is discussed with the design of software and hardware given in the paper.