标准摘要
[中文适用范围]： IEC 61158 的这一部分规定了现场总线组件的要求。它还规定了必要的媒体和网络配置要求，以确保 a) 数据链路层错误检查之前的数据完整性； b) 物理层设备之间的互操作性。现场总线物理层符合 ISO 7498 定义的 OSI 7 层模型的第 1 层，但对于某些类型，帧定界符位于物理层，而对于其他类型，帧定界符位于数据链路层。 [外文原描述]： IEC 61158-2:2007 specifies the requirements for fieldbus component parts. It also specifies the media and network configuration requirements necessary to ensure agreed levels of data integrity before data-link Layer error checking; interoperability between devices at the physical layer. This fourth edition cancels and replaces IEC 61158-2:2003. This edition of this part constitutes a minor revision. This publication, together with its companion parts for Type 16, also partially replaces IEC 61491:2002 which is at present being revised. IEC 61491 will be issued as a technical report. This edition includes the following significant technical changes with respect to the previous edition: - deletion of the former Type 6 fieldbus for lack of market relevance; - addition of new fieldbus types; - generalization of the seldom-used Type 1 radio to a more useful form. This bilingual version (2014-04) corresponds to the monolingual English version, published in 2007-12.
英文名称Industrial communication networks - Fieldbus specifications - Part 2: Physical layer specification and service definition