热备容错控制系统中的双冗余Profibus网络结构

2014 International Conference on Advances in Engineering & Technology Research (ICAETR - 2014) Pub Date : 2014-08-01 DOI:10.1109/ICAETR.2014.7012852

Sandeep Singh, Valavoju Mahesh Chary, P. Rahman

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引用次数: 2

摘要

介绍了热备容错控制系统中的双冗余Profibus网络结构。在这里，使用两个独立的profibus骨干网分别连接主CPU机架与主I/O机架和冗余I/O机架。按照上述方式配置冗余CPU机架。这完全防止了由于DACS系统中I/O通信接口中的多个故障而导致对进程的控制丢失。并在“Y链路”中建立冗余以获取profibus DP从站数据。这极大地提高了PLC与I/O和DP从站之间的“容错和冗余”通信水平。这完全避免了由于profibus网络中的各种故障而导致的现场I/ o通信丢失。

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Dual Redundant Profibus Network Architecture in hot standby fault tolerant control systems

This paper presents Dual Redundant Profibus Network Architecture in hot standby fault tolerant control systems. Here, two independent profibus backbones are used to connect main CPU rack with main & redundant I/O racks respectively. In the above fashion, the redundant CPU rack is also configured. This completely prevents the loss of control over process due to multiple failures in I/O communication interfaces in the DACS system. And also redundancy in “Y link” is established to acquire profibus DP slave data. This immensely enhances “the fault tolerant & redundancy” level of communication between PLC to I/O & DP slave. This completely avoids the loss of field I/Os communication due to various failures in profibus network.

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2014 International Conference on Advances in Engineering & Technology Research (ICAETR - 2014)

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