基于西门子平台的工业以太网与PROFIBUS通讯机制应用的比较

The Comparison between PROFIBUS-DP field Bus and Industry Ethernet

本课题以工程实践中应用比较广泛的PROFIBUS-DP现场总线通讯机制和使用TCP/IP协议的工业以太网通讯机制作为研究对象,对两种通讯机制的稳定性和速度进行了测试比较。在课题的研究过程中,开发了一套测试软件；该软件可以分别在两种通讯机制下进行测试,然后进行数值分析。通过对数据的比较分析,发现采用西门子公司的PROFIBUS-DP通讯机制比采用以太网卡的通讯机制速度要快；在我们的测试平台下,PROFIBUS-DP在通讯速率较低时,其稳定性不如以太网好,但随着PROFIBUS-DP通讯速率的提高,其稳定性会随之增强。我们将这一比较结果成功应用于济南市烟草公司配送中心项目。

In this paper, PROFIBUS-DP field bus and Industry Ethernet are our research objects. The stability and rate in each communication mode are tested for comparison. We have developed one test software platform which includes test software and analysis software. Through the comparison, we have found that PROFIBUS-DP communication is faster than Industry Ethernet mode in Siemens＇ s products. In our test platform, the stability of Industry Ethernet is better than the stability of PROFIBUS-DP, but the stability of PROFIBUS-DP is enhanced if the communication rate increases. We have put our findings into the Jinan tobacco company project successfully.