SIEMENS工控上位机通讯接口二次开发

Re-exploitation of Communication Interface of SIEMENS Computer

本文介绍自动化系统中过程控制机计算机R30的通讯接口的二次开发,讨论了PC机与过程控制计算机双工通信接口实现问题是必要性。描述了接口的开发过程、接口硬件模块组成、开发过程单片机C51的使用,比较详细介绍了接口软件程序的几个比较重要的模块。最后对开发的通讯接口的使用情况进行了说明。

The article introduces the methods to re-exploitation of communication interface of SIEMENS computer in the automatic control system in H-beam of Maanshan Iron＆Steel Ltd.Discussing of the significance that communication between PC and control computer.Describing the process of exploitation communication interface and hardware model and function of C51.Telling the detail of several important software model.In the last, give the effect of the communication interface.