富查伊拉港原料运输系统控制网络具有距离长、设备多、信息吞吐量大的特点。原有控制网络采用Profibus-DP现场总线多主站系统,设备响应速度难以达到工艺要求。控制网络改造成为Profibus-DP单主站系统及以太网双网方式后,实时性和稳定性大幅提升。本文介绍了改造前后的网络架构,分析了改造前实时性和稳定性不佳的原因,以及改造后网络的利弊。 Fujairah port raw material transportation system control network has a long distance, more equipment, large information throughput. The original control network using Profibus-DP fieldbus multi-master system, the device response speed difficult to achieve process requirements. Control network transformation into Profibus-DP single-master system and Ethernet dual-network approach, real-time and stability improved dramatically. This article introduces the network architecture before and after the transformation, analyzes the reasons for the poor real-time and stability before the transformation, and the pros and cons of the transformed network.