IEC - 62056-42
Electricity Metering - Data Exchange for Meter Reading, Tariff and Load Control - Part 42: Physical Layer Services and Procedures for Connection-Oriented Asynchronous Data Exchange
|Publication Date:||1 February 2002|
|ICS Code (Physical layer):||35.100.10|
|ICS Code (Electricity supply systems):||91.140.50|
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-speci
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.