IEC 62056-42-2002 电量测量.计数器读数、电费和负载控制的数据交换.第42部分:定向连接异步数据交换的物理层工作和程序

标准号：IEC 62056-42-2002
中文标准名称：电量测量.计数器读数、电费和负载控制的数据交换.第42部分:定向连接异步数据交换的物理层工作和程序
英文标准名称：Electricity metering - Data exchange for meter reading, tariff and load control - Part 42: Physical layer services and procedures for connection-oriented asynchronous data exchange
标准类型：N22
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：N22
国际标准分类号：35.100.10;91.140.50
适用范围：This part of IEC 62056 specifies the physical layer services and protocols within the Companion Specification for Energy Metering (COSEM) three-layer connection oriented profile for asynchronous data communication. The document does not specify physical layer signals and mechanical aspects. Local, implementation-specific issues are also not specified. In annex A, an example of how this physical layer can be used for data exchange through the Public Switched Telephone Network (PSTN) using intelligent Hayes modems is given. The use of the physical layer for the purposes of direct local data exchange using an optical port or a current loop physical interface is specified in IEC 62056-21. Annex B gives an explanation of the role of data models and protocols in electricity meter data exchange.