EN IEC 62056-5-3:2023

Electricity metering data exchange - The DLMS®/COSEM suite - Part 5-3: DLMS®/COSEM application layer

This part of IEC 62056 specifies the DLMS®/COSEM application layer in terms of structure, services and protocols for DLMS®/COSEM clients and servers, and defines rules to specify the DLMS®/COSEM communication profiles. It defines services for establishing and releasing application associations, and data communication services for accessing the methods and attributes of COSEM interface objects, defined in IEC 62056-6-2:2021 using either logical name (LN) or short name (SN) referencing. Annex A (normative) defines how to use the COSEM application layer in various communication profiles. It specifies how various communication profiles can be constructed for exchanging data with metering equipment using the COSEM interface model, and what are the necessary elements to specify in each communication profile. The actual, media-specific communication profiles are specified in separate parts of the IEC 62056 series. Annex B (normative) specifies the SMS short wrapper. Annex C (normative) specifies the gateway protocol. Annex D, Annex E and Annex F (informative) include encoding examples for APDUs. Annex G (normative) provides NSA Suite B elliptic curves and domain parameters. Annex H (informative) provides an example of an End entity signature certificate using P-256 signed with P-256. Annex I (normative) specifies the use of key agreement schemes in DLMS®/COSEM. Annex J (informative) provides examples of exchanging protected xDLMS APDUs between a third party and a server. Annex K (informative) lists the main technical changes in this edition of the standard.

Datenkommunikation der elektrischen Energiemessung - DLMS®/COSEM - Teil 5-3: DLMS/COSEM-Anwendungsschicht

Échange des données de comptage de l'électricité - La suite DLMS®/COSEM - Partie 5-3: Couche application DLMS®/COSEM

IEC 62056-5-3:2023 spécifie la couche application DLMS®/COSEM concernant la structure, les services et les protocoles pour les clients et serveurs DLMS®/COSEM, et définit les règles de spécification des profils de communication DLMS®/COSEM. Elle définit les services permettant d’établir et de libérer des associations d’applications, ainsi que les services de communication de données permettant d’accéder aux méthodes et aux attributs des objets d’interface COSEM, définis dans l’IEC 62056-6-2:2021, à l’aide du référencement par nom logique (LN, Logical Name) ou par nom abrégé (SN, Short Name). L’Annexe A (normative) définit comment utiliser la couche application COSEM dans différents profils de communication. Elle indique comment différents profils de communication peuvent être construits de sorte à échanger des données avec le matériel de comptage à l’aide du modèle d’interface COSEM, ainsi que les éléments nécessaires à indiquer dans chaque profil de communication. Les profils de communication réels, spécifiques au support, sont spécifiés dans des parties distinctes de la série IEC 62056. L’Annexe B (normative) spécifie la couche d’adaptation réduite pour le système de messages courts (SMS, Short Message Service). L’Annexe C (normative) spécifie le protocole de passerelle. L’Annexe D, l’Annexe E et l’Annexe F (informatives) incluent des exemples de codage d’APDU. L’Annexe G (normative) spécifie des courbes elliptiques et des paramètres de domaine de la Suite B de la NSA. L’Annexe H (informative) donne un exemple de certificat de signature d’entité finale utilisant P-256 signé avec P-256. L’Annexe I (normative) spécifie l’utilisation de mécanismes d’agrément de clé dans DLMS®/COSEM. L’Annexe J (informative) donne des exemples d’échanges d’APDU xDLMS protégés entre une tierce partie et un serveur. L’Annexe K (informative) énumère les modifications techniques majeures contenues dans cette quatrième édition. Cette quatrième édition annule et remplace la troisième édition parue en 2017. Cette édition constitue une révision technique. Les modifications techniques majeures par rapport à l’édition précédente sont énumérées à l’Annexe K (informative)

Izmenjava podatkov pri merjenju električne energije - Niz DLMS/COSEM - 5-3. del: Aplikacijska plast DLMS/COSEM (IEC 62056-5-3:2023)

Ta del standarda IEC 62056 določa aplikacijsko plast DLMS/COSEM v smislu strukture, storitev in protokolov za odjemalce ter strežnike DLMS®/COSEM in opredeljuje pravila za določanje komunikacijskih profilov DLMS®/COSEM.
Določa storitve za vzpostavljanje in izdajanje povezav aplikacij ter podatkovne komunikacijske storitve za dostop do metod in atributov vmesniških objektov COSEM iz standarda IEC 62056-6-2:2021 z uporabo reference logičnega (LN) ali kratkega imena (SN).
Dodatek A (normativni) opredeljuje, kako se pri različnih komunikacijskih profilih uporablja aplikacijska plast COSEM. Določa, kako so lahko različni komunikacijski profili izdelani za izmenjavo podatkov z opremo za merjenje, ki uporablja vmesniški model COSEM, in kateri so potrebni elementi, ki jih je treba določiti v posameznem komunikacijskem profilu. Dejanski komunikacijski profili, ki se uporabljajo za medije, so opredeljeni v ločenih delih skupine standardov IEC 62056.
Dodatek B (normativni) določa kratko ovojnico za SMS.
Dodatek C (normativni) določa usmerjevalni protokol.
Dodatki D, E in F (informativni) vključujejo primere kodiranja za podatkovne enote aplikacijskega protokola (APDU).
Dodatek G (normativni) podaja eliptične krivulje NSA Suite B in domenske parametre.
Dodatek H (informativni) podaja primer certifikata podpisa končne entitete, ki uporablja krivuljo P-256 in je z njo tudi podpisan.
Dodatek I (normativni) določa uporabo shem za določanje ključa v okviru specifikacije DLMS®/COSEM.
Dodatek J (informativni) podaja primere izmenjave zaščitenih podatkovnih enot APDU xDLMS med tretjo osebo in strežnikom.
Dodatek K (informativni) navaja glavne tehnične spremembe v tej izdaji standarda.

General Information

• Status: Published
• Publication Date: 02-Nov-2023
• ICS: 17.220 - Electricity. Magnetism. Electrical and magnetic measurements
• ICS: 35.110 - Networking
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: CLC/TC 13 - Equipment for electrical energy measurement and load control
• Drafting Committee: IEC/TC 13 - IEC_TC_13
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 03-Nov-2023
• Due Date: 03-Jun-2022
• Completion Date: 03-Nov-2023
• Mandate: M/441 - Standardisation mandate to CEN, CENELEC and ETSI in the field of measuring instruments for the development of an open architecture for utility meters involving communication protocols enabling interoperability
• Mandate: M/490 - Standardisation mandate to the European Standardisation Organisations (ESOs) to support European Smart Grid deployment
• Ref Project: SIST EN IEC 62056-5-3:2024 - Electrcity metering data exchange - The DLMS/COSEM suite - Part 5-3: DLMS/COSEM application layer (IEC 62056-5-3:2023)

Relations

• Replaces: EN 62056-5-3:2017 - Electricity metering data exchange - The DLMS/COSEM suite - Part 5-3: DLMS/COSEM application layer
• Effective Date: 26-Jul-2021

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2024
Izmenjava podatkov pri merjenju električne energije - Niz DLMS/COSEM - 5-3. del:
Aplikacijska plast DLMS/COSEM (IEC 62056-5-3:2023)
Electrcity metering data exchange - The DLMS/COSEM suite - Part 5-3: DLMS/COSEM
application layer (IEC 62056-5-3:2023)
Datenkommunikation der elektrischen Energiemessung - DLMS/COSEM - Teil 5-3:
DLMS/COSEM-Anwendungsschicht (IEC 62056-5-3:2023)
Echange des données de comptage de l'électricité - La suite DLMS/COSEM - Partie 5-3:
Couche application DLMS/COSEM (IEC 62056-5-3:2023)
Ta slovenski standard je istoveten z: EN IEC 62056-5-3:2023
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
35.100.70 Uporabniški sloj Application layer
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62056-5-3

NORME EUROPÉENNE
EUROPÄISCHE NORM November 2023
ICS 17.220; 35.110; 91.140.50 Supersedes EN 62056-5-3:2017
English Version
Electricity metering data exchange - The DLMS®/COSEM suite -
Part 5-3: DLMS®/COSEM application layer
(IEC 62056-5-3:2023)
Échange des données de comptage de l'électricité - La Datenkommunikation der elektrischen Energiemessung -
suite DLMS®/COSEM - Partie 5-3: Couche application DLMS®/COSEM - Teil 5-3: DLMS®/COSEM-
DLMS®/COSEM Anwendungsschicht
(IEC 62056-5-3:2023) (IEC 62056-5-3:2023)
This European Standard was approved by CENELEC on 2023-11-02. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62056-5-3:2023 E

European foreword
The text of document 13/1890/FDIS, future edition 4 of IEC 62056-5-3, prepared by IEC/TC 13
"Electrical energy measurement and control" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 62056-5-3:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-08-02
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-11-02
document have to be withdrawn
This document supersedes EN 62056-5-3:2017 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a Standardization Request addressed to CENELEC by the
European Commission.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62056-5-3:2023 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
ISO 3166 (series) NOTE Approved as EN ISO 3166 (series)

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where 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.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 61334-4-41 1996 Distribution automation using distribution EN 61334-4-41 1996
line carrier systems - Part 4: Data
communication protocols - Section 41:
Application protocol - Distribution line
message specification
IEC 61334-6 2000 Distribution automation using distribution EN 61334-6 2000
line carrier systems - Part 6: A-XDR
encoding rule
IEC/TR 62051 1999 Electricity metering - Glossary of terms - -
IEC/TR 62051-1 2004 Electricity metering - Data exchange for - -
meter reading, tariff and load control -
Glossary of terms - Part 1: Terms related
to data exchange with metering equipment
using DLMS®/COSEM
IEC 62056-6-2 2023 Electricity metering data exchange - The EN IEC 62056-6-2 2023
DLMS®/COSEM suite - Part 6-2: COSEM
interface classes
IEC 62056-7-3 2017 Electricity metering data exchange - The EN 62056-7-3 2017
DLMS®/COSEM suite - Part 7-3: Wired
and wireless M-Bus communication
profiles for local and neighbourhood
networks
IEC 62056-7-6 2013 Electricity metering data exchange - The EN 62056-7-6 2013
DLMS®/COSEM suite - Part 7-6: The 3-
layer, connection-oriented HDLC based
communication profile
IEC 62056-8-3 2013 Electricity metering data exchange - The EN 62056-8-3 2013
DLMS®/COSEM suite - Part 8-3:
Communication profile for PLC S-FSK
neighbourhood networks
1 2
IEC 62056-8-11 — Electricity metering data exchange - The EN IEC 62056-8-11 —
DLMS®/COSEM suite - Part 8-11:
Communication profile for Wi-SUN field
area mesh networks
IEC 62056-8-12 2023 Electricity metering data exchange - The EN IEC 62056-8-12 2023
DLMS®/COSEM suite - Part 8-12:
Communication profile for Low-Power
Wide Area Networks (LPWANs)
IEC 62056-9-7 2013 Electricity metering data exchange - The EN 62056-9-7 2013
DLMS/COSEM suite - Part 9-7:
Communication profile for TCP-UDP/IP
networks
ISO/IEC 8824-1 2008 Information technology - Abstract Syntax - -
Notation One (ASN.1): Specification of
basic notation
ISO/IEC 8825-1 2008 Information technology - ASN.1 encoding - -
rules: Specification of Basic Encoding
Rules (BER), Canonical Encoding Rules
(CER) and Distinguished Encoding Rules
(DER)
ISO/IEC 15953 1999 Information technology - Open systems - -
interconnection - Service definition for the
Application service object association
control service element
ISO/IEC 15954 1999 Information technology - Open systems - -
interconnection - Connection-mode
protocol for the application service object
association control service element
ISO/IEC 7498-1 1994 Information technology - Open Systems - -
Interconnection - Basic reference model:
The basic model
ITU-T X.509 2008 Information technology - Open systems - -
interconnection - The Directory: Public-key
and attribute certificate frameworks
ITU-T X.693 2008 Information technology - ASN.1 encoding - -
rules: XML Encoding rules (XER)
ITU-T X.693 2011 Information technology - ASN.1 encoding - -
Corrigendum 1 rules: XML Encoding Rules (XER)
Technical Corrigendum 1
ITU-T X.694 2008 Information technology - ASN.1 encoding - -
rules: Mapping W3C XML schema
definitions into ASN.1
ITU-T X.694 2011 Information technology - ASN.1 encoding - -
Corrigendum rules: Mapping W3C XML schema
definitions into ASN.1 Technical
corrigendum 1
FIPS PUB 180-4 2012 Secure Hash Standard (SHS) - -
FIPS PUB 186-4 2013 Digital Signature Standard (DSS) - -

Under preparation. Stage at the time of publication: IEC CDV.
Under preparation. Stage at the time of publication: prEN IEC 62056-8-11:2023.
NIST SP 800-21 2005 Guideline for Implementing Cryptography - -
in the Federal Government
NIST SP 800-32 2001 Introduction to Public Key Technology and - -
the Federal PKI Infrastructure
NIST SP 800-56A 2013 Recommendation for Pair-Wise Key - -
rev2 Establishment Schemes Using Discrete
Logarithm Cryptography
NIST SP 800-57 2012 Recommendation for Key Management, - -
Part 1: General (Revision 3)
NSA2 - Suite B Implementer's guide to NIST - -
th
SP800-56A, 28 July 2009
NSA3 - NSA Suite B Base Certificate and CRL - -
th
Profile, 27 May 2008
SEC1 2009 Standards for Efficient Cryptography: - -
Elliptic Curve Cryptography. SECG.
Version 2.0
RFC 3394 2002 Internet Engineering Task Force (IETF). - -
Advanced Encryption Standard (AES) Key
Wrap Algorithm. Edited by J. Schaad
(Soaring Hawk Consulting) and R. Housley
(RSA Laboratories)
RFC 4106 - The Use of Galois/Counter Mode (GCM) in - -
IPsec Encapsulating Security Payload
(ESP)
RFC 4108 2005 Using Cryptographic Message Syntax - -
(CMS) to Protect Firmware Packages
RFC 5280 2008 Internet X.509 Public Key Infrastructure - -
Certificate and Certificate Revocation List
(CRL) Profile
IEC 62056-5-3 ®
Edition 4.0 2023-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electricity metering data exchange – The DLMS®/COSEM suite –

Part 5-3: DLMS®/COSEM application layer

Échange des données de comptage de l'électricité – La suite DLMS®/COSEM –

Partie 5-3: Couche application DLMS®/COSEM

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220, 35.110, 91.140.50 ISBN 978-2-8322-7223-7

– 2 – IEC 62056-5-3:2023 © IEC 2023
CONTENTS
FOREWORD . 12
INTRODUCTION . 14
1 Scope . 15
2 Normative references . 15
3 Terms, definitions, abbreviated terms and symbols . 17
3.1 General DLMS®/COSEM definitions . 17
3.2 Definitions related to cryptographic security . 22
3.3 Definitions and abbreviated terms related to the Galois/Counter Mode . 32
3.4 General abbreviated terms . 34
3.5 Symbols related to the Galois/Counter Mode . 38
3.6 Symbols related the ECDSA algorithm . 38
3.7 Symbols related to the key agreement algorithms . 39
4 Overview of DLMS®/COSEM . 39
4.1 Information exchange in DLMS®/COSEM . 39
4.1.1 General . 39
4.1.2 Communication model . 40
4.1.3 Naming and addressing . 41
4.1.4 Connection oriented operation . 44
4.1.5 Application associations . 45
4.1.6 Messaging patterns . 46
4.1.7 Data exchange between third parties and DLMS®/COSEM servers . 47
4.1.8 Communication profiles . 48
4.1.9 Model of a DLMS®/COSEM metering system . 50
4.1.10 Model of DLMS®/COSEM servers . 50
4.1.11 Model of a DLMS®/COSEM client . 52
4.1.12 Interoperability and interconnectivity in DLMS®/COSEM . 53
4.1.13 Ensuring interconnectivity: the protocol identification service . 53
...