ELECTRICITY METERING DATA EXCHANGE - The DLMS/COSEM suite - Part 1-0: Smart metering standardization framework

This part of IEC 62056 provides information on the smart metering use cases and on
architectures supported by the IEC 62056 DLMS/COSEM series of standards specifying
electricity meter data exchange. It describes the standardization framework including:
• the principles on which the standards shall be developed;
• the ways the existing standards shall be extended to support new use cases and to
accommodate new communication technologies, while maintaining coherency;
• the aspects of interoperability and information security.
It also provides guidance for selecting the suitable standards for a specific interface within the
smart metering system.
Other aspects of metering covered by TC13, like metrological requirements, testing, safety
and dependability are out of the scope of this Standard.

Datenkommunikation der elektrischen Energiemessung - DLMS/COSEM - Teil 1-0: Normungsrahmen für die intelligente Messung

ECHANGE DES DONNEES DE COMPTAGE DE L'ELECTRICITE - La suite DLMS/COSEM - Partie 1-0: Cadre de normalisation du comptage intelligent

L'IEC 62056-1-0:2014 fournit des informations relatives aux cas d'utilisation du comptage intelligent et aux architectures supportées par la série de normes IEC 62056 DLMS/COSEM spécifiant l'échange des données de comptage de l'électricité. Elle décrit le cadre de normalisation incluant: - les principes selon lesquels les normes doivent être développées; - la façon dont les normes existantes doivent être étendues pour couvrir de nouveaux cas d'utilisation et pour accueillir de nouvelles technologies de communication, tout en maintenant la cohérence; - les aspects d'interopérabilité et de sécurité des informations. Elle fournit également des lignes directrices pour la sélection des normes adaptées à une interface spécifique au sein du système de comptage intelligent.

Izmenjava podatkov pri merjenju električne energije - Niz DLMS/COSEM - 1-0. del: Struktura standarda za inteligentno merjenje

Ta del standarda IEC 62056 ponuja informacije o primerih uporabe inteligentnega merjenja in arhitekturah, podprtih z nizom standardov IEC 62056 DLMS/COSEM, ki določajo izmenjavo podatkov pri merjenju električne energije. Opisuje okvira standardizacije, vključno s/z:
• principi, na katerih je treba razviti standarde;
• načini za razširitev obstoječih standardov za podporo novim primerom uporabe in za prilagoditev novim komunikacijskim tehnologijam ob ohranjanju skladnosti;
• vidiki interoperabilnosti in informacijske varnosti.
Ponuja tudi napotke za izbiro primernih standardov za poseben vmesnik v okviru inteligentnega merilnega sistema.
Drugi vidiki merjenja, ki so zajeti v TC13, kot so meroslovne zahteve, preskušanje, varnost in zanesljivost, ne spadajo na področje uporabe tega standarda.

General Information

Status
Published
Publication Date
06-Aug-2015
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
08-Jul-2015
Due Date
12-Sep-2015
Completion Date
07-Aug-2015

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SLOVENSKI STANDARD
SIST EN 62056-1-0:2015
01-september-2015
,]PHQMDYDSRGDWNRYSULPHUMHQMXHOHNWULþQHHQHUJLMH1L]'/06&26(0GHO
6WUXNWXUDVWDQGDUGD]DLQWHOLJHQWQRPHUMHQMH
ELECTRICITY METERING DATA EXCHANGE - The DLMS/COSEM suite - Part 1-0:
Smart metering standardization framework
ECHANGE DES DONNEES DE COMPTAGE DE L'ELECTRICITE - La suite
DLMS/COSEM - Partie 1-0: Cadre de normalisation du comptage intelligent
Ta slovenski standard je istoveten z: EN 62056-1-0:2015
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
35.100.05 9HþVORMQHXSRUDEQLãNH Multilayer applications
UHãLWYH
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
SIST EN 62056-1-0:2015 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 62056-1-0:2015
---------------------- Page: 2 ----------------------
SIST EN 62056-1-0:2015
EUROPEAN STANDARD EN 62056-1-0
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2015
ICS 17.220; 35.110; 91.140.50
English Version
Electricity metering data exchange - The DLMS/COSEM suite -
Part 1-0: Smart metering standardization framework
(IEC 62056-1-0:2014)

Échange des données de comptage de l'électricité - La Datenkommunikation der elektrischen Energiemessung -

suite DLMS/COSEM - Partie 1-0: Cadre de normalisation DLMS/COSEM - Teil 1-0: Normungsrahmen für die

du comptage intelligent intelligente Messung
(IEC 62056-1-0:2014) (IEC 62056-1-0:2014)

This European Standard was approved by CENELEC on 2014-07-09. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 62056-1-0:2015 E
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SIST EN 62056-1-0:2015
EN 62056-1-0:2015 - 2 -
Foreword

The text of document 13/1574/FDIS, future edition 1 of IEC 62056-1-0, prepared by IEC/TC 13

"Electrical energy measurement, tariff- and load control" was submitted to the IEC-CENELEC parallel

vote and approved by CENELEC as EN 62056-1-0:2015.
The following dates are fixed:
(dop) 2015-12-05
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2017-07-09
standards conflicting with the
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such

patent rights.
Endorsement notice

The text of the International Standard IEC 62056-1-0:2014 was approved by CENELEC as a

European Standard without any modification.
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SIST EN 62056-1-0:2015
- 3 - EN 62056-1-0:2015
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 61334-4-32 - Distribution automation using distribution EN 61334-4-32 -
line carrier systems -- Part 4: Data
communication protocols -- Section 32:
Data link layer - Logical link control (LLC)
IEC 61334-5-1 - Distribution automation using distribution EN 61334-5-1 -
line carrier systems -- Part 5-1: Lower layer
profiles - The spread frequency shift keying
(S-FSK) profile
IEC 62056-3-1 - Electricity metering data exchange - The EN 62056-3-1 -
DLMS/COSEM suite -- Part 3-1: Use of
local area networks on twisted pair with
carrier signalling
IEC 62056-4-7 - Electricity metering data exchange - The FprEN 62056-4-7 -
DLMS/COSEM suite -- Part 4-7:
DLMS/COSEM transport layer for IP
networks
IEC 62056-5-3 2013 Electricity metering data exchange - The EN 62056-5-3 2014
DLMS/COSEM suite -- Part 5-3:
DLMS/COSEM application layer
IEC 62056-6-1 2013 Electricity metering data exchange - The EN 62056-6-1 2013
DLMS/COSEM suite -- Part 6-1: COSEM
Object Identification System (OBIS)
IEC 62056-6-2 2013 Electricity metering data exchange - The EN 62056-6-2 2013
DLMS/COSEM suite -- Part 6-2: COSEM
interface classes
IEC 62056-7-6 - Electricity metering data exchange - The EN 62056-7-6 -
DLMS/COSEM suite -- Part 7-6: The 3-
layer, connection-oriented HDLC based
communication profile
IEC 62056-8-3 - Electricity metering data exchange - The EN 62056-8-3 -
DLMS/COSEM suite -- Part 8-3:
Communication profile for PLC S-FSK
neighbourhood networks
IEC 62056-9-7 - Electricity metering data exchange - The EN 62056-9-7 -
DLMS/COSEM suite -- Part 9-7:
Communication profile for TCP-UDP/IP
networks
IEC 62056 series Electricity metering - Data exchange for EN 62056 series
meter reading, tariff and load control
IEC 62056-42 - Electricity metering - Data exchange for EN 62056-42 -
meter reading, tariff and load control -- Part
42: Physical layer services and procedures
for connection-oriented asynchronous data
exchange
IEC 62056-46 - Electricity metering - Data exchange for EN 62056-46 -
meter reading, tariff and load control -- Part
46: Data link layer using HDLC protocol
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SIST EN 62056-1-0:2015
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SIST EN 62056-1-0:2015
IEC 62056-1-0
Edition 1.0 2014-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electricity metering data exchange – The DLMS/COSEM suite –
Part 1-0: Smart metering standardisation framework
Échange des données de comptage de l'électricité – La suite DLMS/COSEM –
Partie 1-0: Cadre de normalisation du comptage intelligent
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX Q
ICS 17.220; 35.110; 91.140.50 ISBN 978-2-8322-1617-0

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 62056-1-0:2015
– 2 – IEC 62056-1-0:2014 © IEC 2014
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms, definitions and abbreviations ............................................................................... 7

3.1 Terms and definitions.............................................................................................. 7

3.2 Abbreviations .......................................................................................................... 8

4 Smart metering processes and use cases ........................................................................ 8

5 Smart metering reference architecture ............................................................................. 9

6 Interfaces to external systems ....................................................................................... 10

7 The basic principles followed in the IEC 62056 DLMS/COSEM suite .............................. 11

7.1 General ................................................................................................................. 11

7.2 Interoperability and flexibility ................................................................................ 11

7.3 Security ................................................................................................................ 11

7.4 Access security ..................................................................................................... 12

7.5 Communication channel security ........................................................................... 12

7.6 End-to-end security ............................................................................................... 12

7.7 Security algorithms and mechanisms .................................................................... 13

8 Data model and communication channels ...................................................................... 13

8.1 General ................................................................................................................. 13

8.2 The data model and the application layer .............................................................. 13

8.3 The set of communication channels ...................................................................... 13

8.4 The communication profiles .................................................................................. 13

9 The standards framework .............................................................................................. 14

Annex A (informative) IEC 62056 standards supporting the smart metering interfaces ......... 15

Figure 1 – Smart metering architecture ................................................................................. 10

Figure 2 – The standards framework for smart metering ....................................................... 14

Table 1 – Supported business processes and use cases ........................................................ 8

Table A.1 – Available IEC 62056 standards supporting the smart metering architecture

of Figure 1 ............................................................................................................................ 15

Table A.2 – Technical Specifications defining the interfaces to external systems .................. 16

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SIST EN 62056-1-0:2015
IEC 62056-1-0:2014 © IEC 2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICITY METERING DATA EXCHANGE –
THE DLMS/COSEM SUITE –
Part 1-0: Smart metering standardisation framework
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62056-1-0 has been prepared by IEC technical committee 13:

Electrical energy measurement and control.
The text of this standard is based on the following documents:
FDIS Report on voting
13/1574/FDIS 13/1580/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

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SIST EN 62056-1-0:2015
– 4 – IEC 62056-1-0:2014 © IEC 2014

A list of all parts in the IEC 62056 series, published under the general title Electricity metering

data exchange – The DLMS/COSEM suite, can be found on the IEC website.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
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SIST EN 62056-1-0:2015
IEC 62056-1-0:2014 © IEC 2014 – 5 –
INTRODUCTION

With the growing number of smart metering deployments, secure and interoperable data

exchange between the different system components becomes essential. Besides supporting

the execution of the supplier-consumer contract and providing the necessary billing data the

smart meter becomes also the source of valuable information for the efficient operation of the

smart grid.

The increasing range of applications that depend on metering data leads to a growing amount

of data to be exchanged within the smart metering system and via the interfaces to other

systems. Smart metering systems must be adaptable to different communication channels

without creating any data incompatibilities for the supported applications.

The standards in the IEC 62056 DLMS/COSEM suite have been constantly improved and

extended considering the growing requirements of the smart metering and smart grid

applications. In particular, the object oriented COSEM data model has been extended with

new interface classes supporting new smart metering and smart grid use cases. The

application layer has been “fortified” with state-of-the art security features offering scalable

security for the entire range of applications via a large range of communication channels. With

the introduction of the concept of “communication profiles” the IEC 62056 DLMS/COSEM suite

provides the means to link different communication channels standards with the consistent

data model of DLMS/COSEM.

This International Standard summarises the principles the IEC 62056 standards are built on

and sets the rules for future extensions to guarantee consistency.

Smart metering forms an important part of smart grids and smart homes. In order to ensure

the efficient and secure flow of information between the different applications and actors in

the energy market, harmonisation of the standards worked out by the corresponding

standardisation committees becomes necessary. In particular, a smart metering system offers

interfaces to electricity and non-electricity meters, to home automation, to substation

automation and to electricity distribution management systems. The standardisation concepts

described in this standard ensure consistency within the scope of smart metering as a

prerequisite to define harmonised interfaces to smart grid and smart home systems.

The standards of the IEC 62056 DLMS/COSEM suite have been developed by IEC TC13 for

the purposes of electricity metering. Some of the standards – in particular the COSEM data

model – are also used by other Technical Committees responsible for non-electricity metering.

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SIST EN 62056-1-0:2015
– 6 – IEC 62056-1-0:2014 © IEC 2014
ELECTRICITY METERING DATA EXCHANGE –
THE DLMS/COSEM SUITE –
Part 1-0: Smart metering standardisation framework
1 Scope

This part of IEC 62056 provides information on the smart metering use cases and on

architectures supported by the IEC 62056 DLMS/COSEM series of standards specifying

electricity meter data exchange. It describes the standardization framework including:

• the principles on which the standards shall be developed;

• the ways the existing standards shall be extended to support new use cases and to

accommodate new communication technologies, while maintaining coherency;
• the aspects of interoperability and information security.

It also provides guidance for selecting the suitable standards for a specific interface within the

smart metering system.

Other aspects of metering covered by TC13, like metrological requirements, testing, safety

and dependability are out of the scope of this Standard.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and

are indispensable for its application. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any
amendments) applies.

IEC 61334-4-32, Distribution automation using distribution line carrier systems – Part 4: Data

communication protocols – Section 32: Data link layer – Logical link control (LLC)

IEC 61334-5-1, Distribution automation using distribution line carrier systems – Part 5-1:

Lower layer profiles – The spread frequency shift keying (S-FSK) profile
IEC 62056 (all parts), Electricity metering data exchange – The DLMS/COSEM suite

IEC 62056-3-1, Electricity metering data exchange – The DLMS/COSEM suite – Part 3-1: Use

of local area networks on twisted pair with carrier signalling

IEC 62056-4-7, Electricity metering – Data exchange for meter reading, tariff and load control

– Part 4-7: COSEM transport layers for IPv4 networks (to be published)
IEC 62056-5-3:2013, Electricity metering data exchange – The DLMS/COSEM suite –
Part 5-3: DLMS/COSEM application layer
IEC 62056-6-1:2013, Electricity metering data exchange – The DLMS/COSEM suite –
Part 6-1: Object Identification System (OBIS)
IEC 62056-6-2:2013, Electricity metering data exchange – The DLMS/COSEM suite –
Part 6-2: COSEM interface classes
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SIST EN 62056-1-0:2015
IEC 62056-1-0:2014 © IEC 2014 – 7 –

IEC 62056-7-6, Electricity metering data exchange – The DLMS/COSEM suite – Part 7-6: The

3-layer, connection-oriented HDLC based communication profile

IEC 62056-8-3, Electricity metering data exchange – The DLMS/COSEM suite – Part 8-3:

Communication profile for PLC S-FSK neighbourhood networks

IEC 62056-9-7, Electricity metering data exchange – The DLMS/COSEM suite – Part 9-7:

Communication profile for TCP-UDP/IP networks

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

IEC 62056-46, Electricity metering – Data exchange for meter reading, tariff and load control

– Part 46: Data link layer using HDLC protocol
3 Terms, definitions and abbreviations
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in the standards of the

IEC 62056 series apply as well as the following:
3.1.1
communication channel

physical or logical channel to transport data over single or multiple communication media

3.1.2
communication medium
physical medium to transmit signals carrying information
3.1.3
exchangeability

ability of a specific system component to replace a specific component in an existing system

without any need for configuration neither on the component’s side nor of the system’s side.

Interoperability is a necessary but not a sufficient condition to achieve exchangeability. For

hardware components the expression “plug-and-play” is also used to describe their

exchangeability
3.1.4
external systems
systems supporting use cases beyond the scope of smart metering but exchanging
information with the smart metering system
3.1.5
interoperability

ability of two or more system components to exchange information and to use the information

that has been exchanged for the purpose the component is designed for
3.1.6
open standard

standard made available to the general public and being developed (or approved) and

maintained via a collaborative and consensus driven process
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SIST EN 62056-1-0:2015
– 8 – IEC 62056-1-0:2014 © IEC 2014
3.2 Abbreviations
The following abbreviations are used in this standard:
APDU Application Protocol Data Unit
CIM Common Information Model of TC57
COSEM Companion Specification for Energy Metering
DLMS Device Language Message Specification
ERP Enterprise Resource Planning
HES Head End System
LN Local Network
LNAP Local Network Access Point
NN Neighbourhood Network
NNAP Neighbourhood Network Access Point
PLC Power Line Carrier
WAN Wide Area Network
4 Smart metering processes and use cases

Table 1 gives an overview on the use cases that shall be supported by the smart metering

standards. The use cases are clustered into business processes. This clustering serves just

illustration purposes; it may vary from utility to utility.
Table 1 – Supported business processes and use cases
Business process Use case
Obtain meter readings on demand
Obtain scheduled meter reading

Contracting and billing Set and maintain contractual parameters in the meter (see NOTE 2)

Execute supply control
Execute load control
Customer support Provide information to the energy consumer
Meter commissioning and registration
Meter supervision
Maintenance of the security system
Manage events and alarms
Infrastructure maintenance
Firmware update
Clock synchronisation
Disconnection and re-connection of the consumer’s premises
Quality of supply supervision

NOTE 1 There are no commonly agreed names for the smart metering use cases within the standardisation

community yet. In order to consider the universal scope of the IEC standards generic and self-explanatory

names are used here.

NOTE 2 The contractual parameters consider the credit mode or the debit mode (pre-payment) operation of the

meter.

The detailed requirements of the various use cases depend on the market and on the legal

environment the smart metering system is operating in. The supporting standards shall be

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SIST EN 62056-1-0:2015
IEC 62056-1-0:2014 © IEC 2014 – 9 –

designed to offer enough flexibility to meet the different market needs and the different legal

environments.

In order to facilitate achieving interoperability, security and efficiency, the standards shall

consider all aspects of data exchange in a smart metering system, including the functions to

be supported, the data models (semantics), the data presentation (syntax), and the

communication protocols for transporting the data over the interfaces using various

communication technologies.
5 Smart metering reference architecture

Figure 1 shows the smart metering reference architecture enabling the data exchange

necessary to support the use cases of Table 1. The different system components and their

interfaces are identified. The partitioning between the different components is based purely on

communication aspects; i.e. components and interfaces are specified wherever a transition

from one communication medium to another may be considered.

A comprehensive set of smart metering standards shall support all interfaces identified in

Figure 1. All specifications of communication protocols, data access methods or data

structures shall describe only the “outside view”; i.e. how the data and the communication

protocols behave on the interfaces. The behaviour within the components (“inside view”) is

implementation specific and is therefore out of the scope of the standards in the IEC 62056

series.

A practical realisation of a smart metering system will typically contain a subset of the

components and interfaces shown in Figure 1. Components and interfaces which are not

exposed and are therefore not accessible do not need to fulfil any standards.
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SIST EN 62056-1-0:2015
– 10 – IEC 62056-1-0:2014 © IEC 2014
IEC 1717/14
Figure 1 – Smart metering architecture
EXAMPLE 1 “PLC system”:

A PLC system typically uses the C interface between the Metering device and the NNAP (Data Concentrator). The

communication between the NNAP and the HES uses the G2 interface.
EXAMPLE 2 “IP communication via GPRS”
Typically uses the G1 interface between the meter and the HES.
EXAMPLE 3 “Hand Held Unit for local meter access”
This typically uses the M interface.
6 Interfaces to external systems

Smart metering systems exchange data with external systems on several levels using

different interfaces. On LNAP level interfaces to Home Automation and to non-electricity

meters may be provided, on NNAP level typically interfaces to substation automation

equipment may be required, whereas on HES level typically interfaces to billing and ERP

(Enterprise Resource Planning) systems are provided.

The interfaces between the smart metering system and these external systems shall use the

standards of the IEC 62056 DLMS/COSEM suite or shall use the existing standards of the

external system. Interoperability shall be achieved on data model level by mapping the data

models of IEC 62056-6-2 and IEC 62056-6-1 to the data model of the external system.

NOTE 1 The specification of the mapping between the COSEM data model and the data model of CIM

(IEC 61968-9) supporting the interface between a smart metering system and an ERP system is undertaken by

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Questions, Comments and Discussion

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