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LONWORKS现场总线技术的应用已越来越多。本文介绍了本所集成的LONWORKS现场总线网络控制系统中，PID控制节点的硬件和软件的设计，网络通信的实现．最后，给出了本节点的应用事例。
LONWORKS field bus technology has been more and more applications. This article describes the integrated LONWORKS fieldbus network control system, PID control node hardware and software design, network communication. Finally, the application of this node is given.