Profibus通信监测仪的设计与实现

Design and Implementation of Profibus Communication Monitor

为满足Profibus系统调试的需要,设计了一种基于PC的Profibus通信监测仪,它能对接入总线的各种设备进行在线监测,实时分析以及故障诊断。实现了一种新型的报文识别方法,以适应总线高速传输的要求,并在此基础上增加报文解析功能,保证用户在不了解总线协议情况下亦能自如使用Profibus系统。试验结果表明,Profibus通信监测仪具有广阔的应用前景。

In order to meet the needs of Profibus system debugging, the design of Profibus communication monitor based on PC is described. The devices can be monitored on line, the devices real-time analysis and fault diagnosis are given. A new type of telegram identification method is proposed, which can adapt to the requirements of high-speed on bus. On the basis of this function, the telegram analysis function is increasd. This function can make the using of Profibus system easier, even if the user don＇ t know the bus protocol. The experimental results show that Profibus communication monitor will have broad application prospects.