一种灵活控制的RS232-RS484转换器的设计与实现

Designation and Realization of a Flexible Control RS232-RS485 Converter

简要介绍一种基于双口RAMIDT7134的RS2 32 RS4 85转换器硬件组成的基础上 ,着重讲述了其应用软件的设计方案。利用该转换器的可编程的特点 ,可以使通过该转化器连接的PC机和多个单片机应用系统灵活地进行双向通信。另外 ,还给出一种抗干扰和可靠性良好的基于MAX14 80B的RS4 85标准的通信网络连接图。该转换器及通信网络已在东北电力学院研制的小水电调度通信自动化系统中使用 。

This paper describes the design of application software base on the hardware construction of RS232-RS485 converter which consist of double RAM IDT7134.PC and multi-microcomputer connects with this converter can communicate flexibly with each other using it's programmable feature.Moreover,This paper gives an anti-interfere and high reliability RS485 communication net through MAX1480B.The converter and communication net have been used in small hydro-power dispatch automation and communication system developed by northeast institute of electric power engineering.The good results are achieved.