标准摘要
[中文适用范围]: ISO 15531 的这一部分指定了一个通用框架,用于描述适用于各种一维域的拓扑属性。 然而,考虑到 ISO 15531 其他部分的需求,本部分的开发集中在时域,从而提供一个通用的、自洽的模型,独立于可能发生或已经发生的任何事件给定的时间点。 本部分中指定的时间模型使任何软件应用程序能够为任何相关事件或事件序列提供准确的时间参考,无论是过去、现在还是将来。 该时间模型可由任何需要同时引用与时间或时间间隔相关联的事件、动作或动作序列的应用程序使用。 据此,ISO 15531本部分的范围包括以下内容: ——一维域的拓扑性质的描述; ——时间模型及相关定义的描述; ——ISO 10303-11(EXPRESS语言参考手册)中规定的实体、属性和模式的EXPRESS定义; ——ISO 10303-11 中规定的模型的 EXPRESS-G 图。 以下内容超出了 ISO 15531 本部分的范围: ——任何类型的测量理论或测量方法的描述 — 多维的元素和域 — ISO 10303-41 中描述的任何事件的建模 [外文原描述]: ISO 15531-42:2005 specifies a generic framework for the description of topological properties applicable to a wide range of one dimension domains. Developments made in ISO 15531-42:2005 are focused on the time domain, thus providing a universal, self consistent model, independent of any event that may occur, or has already occurred, at a given point in time. The time model specified in ISO 15531-42:2005 enables any software application to provide an accurate time reference to any related event or sequence of events, whether in the past, in the present or in the future. This time model may be used by any application that needs to reference events, actions or sequences of action linked to time or intervals of time simultaneously. According to this, the scope of ISO 15531-42:2005 includes the following: the description of the topological properties of an one dimension domain; the description of the time model and of the related definitions; the EXPRESS definitions of entities, attributes and schemas as prescribed in ISO 10303-11 (the reference manual of the EXPRESS language); the EXPRESS-G diagrams of the model as prescribed in ISO 10303-11.
英文名称Industrial automation systems and integration — Industrial manufacturing management data — Part 42: Time Model