This framework is of layered and distributed structure, including a central control node layer, a convergent node layer and a leaf node layer.

该框架是分层分布式结构，由中央控制节点层、汇聚节点层和叶节点层构成。

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This paper discusses the layered distributed structure and unit design of the monitor network, and studies the method of realization of the real time ability on the base of CAN fieldbus.

本文探讨了监控网络的分层分布结构和单元设计，提出了基于CAN现场总线的实时监控系统的实现方法。

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