标准摘要
[中文适用范围]: IEC 61158 的这一部分提供了自动化环境中设备之间基本时间关键型消息通信的通用元素。术语“时间关键型”用于表示存在一个时间窗口,在该时间窗口内,需要以某种确定的确定性完成一个或多个指定操作。如果未能在时间窗口内完成指定操作,则请求操作的应用程序可能会失败,从而对设备、工厂甚至人员生命造成风险。本标准以抽象的方式定义了 Type 14 现场总线数据链路层提供的外部可见服务,包括:a) 服务的原始操作和事件;b) 与每个原始操作和事件相关的参数及其形式;c) 这些操作和事件之间的相互关系及其有效序列。本标准的目的是定义提供给以下对象的服务:? 位于现场总线参考模型的应用程序层和数据链路层之间的边界处的 Type 14 现场总线应用层,以及 ? 位于现场总线参考模型的数据链路层和系统管理之间的边界处的系统管理。 [外文原描述]: IEC 61158-3-14:2010 provides common elements for basic time-critical messaging communications between devices in an automation environment. It defines in an abstract way the externally visible service provided by the Type 14 fieldbus data-link layer in terms of the primitive actions and events of the service; the parameters associated with each primitive action and event, and the form which they take and the interrelationship between these actions and events, and their valid sequences. This second edition cancels and replaces the first edition published in 2007 and constitutes a technical revision. The main changes with respect to the previous edition are: - Provide the stability date; - Update the edition of IEC 61588; - Update the Normative references and Bibliography; - Update the value of Protocol type in subclause 5.3.2; - Correct the edit error; - Specification changes for CPF3; - Update of the requirements for all conformance classes; - Update of the requirements for all conformance services. This bilingual version published in 2012-01 corresponds to the English version published in 2010-08.
英文名称Industrial communication networks - Fieldbus specifications - Part 3-14: Data-link layer service definition - Type 14 elements