IEC 62541-14:20 20定义了OPC统一架构（OPC UA）PubSub通信模型。它定义了OPC UA发布订阅模式，该模式补充了IEC 62541-4中服务定义的客户端服务器模式。IEC TR 62541-1概述了这两种型号及其不同用途。 PubSub允许将数据和事件从OPC UA信息源分发到设备网络以及IT和分析云系统中感兴趣的观察者。 本文件包括 ？PubSub概念的一般介绍， ？PubSub配置参数的定义， ？将PubSub概念和配置参数映射到消息和传输协议，以及 ？PubSub配置模型。 并非所有OPC UA应用程序都需要实现所有定义的消息和传输协议映射。IEC 62541-7定义了规定需要实现哪些映射以符合特定配置文件的配置文件。

IEC 62541-14:2020 defines the OPC Unified Architecture (OPC UA) PubSub communication model. It defines an OPC UA publish subscribe pattern which complements the client server pattern defined by the Services in IEC 62541-4. IEC TR 62541-1 gives an overview of the two models and their distinct uses.
PubSub allows the distribution of data and events from an OPC UA information source to interested observers inside a device network as well as in IT and analytics cloud systems.
This document consists of
？ a general introduction of the PubSub concepts,
？ a definition of the PubSub configuration parameters,
？ mapping of PubSub concepts and configuration parameters to messages and transport protocols, and
？ a PubSub configuration model.
Not all OPC UA Applications will need to implement all defined message and transport protocol mappings. IEC 62541-7 defines the Profile that dictates which mappings need to be implemented in order to be compliant with a particular Profile.