Electricity metering data exchange - The DLMS®/COSEM suite - Part 6-2: COSEM interface classes

This part of IEC 62056 specifies a model of a meter as it is seen through its communication interface(s). Generic building blocks are defined using object-oriented methods, in the form of interface classes to model meters from simple up to very complex functionality. Annexes A to F (informative) provide additional information related to some interface classes.

Datenkommunikation der elektrischen Energiemessung - DLMS®/COSEM - Teil 6-2: COSEM Interface-Klassen

Échange des données de comptage de l'électricité - La suite DLMS®/COSEM - Partie 6-2: Classes d'interfaces COSEM

IEC 62056-6-2:2013 spécifie un modèle de compteur tel qu’il est vu à travers son ou ses interfaces de communication. Des blocs génériques de base sont définis à l’aide de méthodes orientées objets, sous forme de classes d’interfaces permettant de modéliser les compteurs ayant des fonctionnalités allant de simples à très complexes. Les Annexes A à F (informatives) donnent des informations supplémentaires relatives à certaines classes d’interfaces. Cette quatrième édition annule et remplace la troisième édition de l’IEC 62056-6-2 parue en 2017. Cette édition constitue une révision technique. Les modifications techniques majeures par rapport à l’édition précédente sont énumérées à l’Annexe F (informative).

Izmenjava podatkov meritev električne energije - Niz DLMS/COSEM - 6-2. del: Vmesniški razredi COSEM (IEC 62056-6-2:2023)

Ta del standarda IEC 62056 določa model števca, kot je videti prek komunikacijskega vmesnika. Splošni gradniki so opredeljeni z metodami, ki so usmerjene v objekte, in sicer v obliki vmesniških razredov za modele števcev od preprostih do zelo zapletenih funkcij.
Dodatki od A do F (informativni) zagotavljajo dodatne informacije v zvezi z nekaterimi vmesniškimi razredi.

General Information

Status
Published
Publication Date
02-Nov-2023
Current Stage
6060 - Document made available - Publishing
Start Date
03-Nov-2023
Due Date
03-Jun-2022
Completion Date
03-Nov-2023

Relations

Overview

EN IEC 62056-6-2:2023 is the part of the DLMS®/COSEM suite that defines the COSEM interface classes - an object‑oriented model of an electricity meter as seen through its communication interfaces. The standard specifies generic building blocks (interface classes) that allow meters to be modelled from very simple to highly complex devices, and includes informative Annexes A–F for additional guidance. EN IEC 62056-6-2:2023 is the 2023 edition (Edition 4.0) of IEC 62056‑6‑2 and replaces the 2018 version.

Key topics and technical requirements

  • Object‑oriented meter model: Defines COSEM interface classes as reusable building blocks to represent meter data, registers, profiles and services via a standard communication model.
  • Class catalogue: Specifies many interface classes (for example Data, Register, Extended Register, Demand Register, Profile Generic) with assigned class_id and versioning to ensure consistent implementations.
  • Access control & management: Includes association models (Association SN, Association LN), client identification, SAP assignment and security setup objects for managing access and associations.
  • Security and protection: Covers COSEM data protection objects, communication port protection and a security setup class to support authentication, encryption and protected access flows.
  • Time & event control: Defines clock, schedule, script table and related time/event classes to support time‑based operations, tariff changes and event logging.
  • Management & utility functions: Contains classes for function control, array management, status mapping, utility tables and image transfer mechanisms.
  • Interoperability emphasis: Uses object IDs and standardized data types to enable consistent referencing and integration across communication profiles.
  • Normative references: Designed to work within the DLMS/COSEM family and interoperates with related IEC and ISO/ITU standards listed in the normative annex.

Practical applications and who uses it

  • Meter manufacturers: Implement COSEM interface classes in firmware to ensure compliance and interoperability with smart‑metering ecosystems.
  • Utilities & AMI integrators: Use the standard to enable remote meter reading, tariff management, demand response and secure data exchange.
  • System integrators & software vendors: Map meter objects into Meter Data Management (MDM) systems, head‑end servers and SCADA/AMI backends.
  • Test labs & certification bodies: Validate device conformance to DLMS/COSEM interface specifications and security requirements.
  • Regulators & standards authors: Reference the standard when specifying interoperability and security requirements for national metering rollouts.

Related standards

  • EN/IEC 62056 series (DLMS/COSEM) - e.g., Part 3‑1, Part 5‑3 (application layer), Part 6‑1 (OBIS)
  • EN 13757 series (meter communications)
  • IEC 62056‑46 (HDLC data link)
  • Relevant ITU/ISO/IEEE profiles for PLC, wireless and network layers listed in the normative references.

Keywords: EN IEC 62056-6-2:2023, COSEM interface classes, DLMS/COSEM, electricity metering data exchange, smart meters, object model, meter interoperability.

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EN IEC 62056-6-2:2024 - BARVE
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Standards Content (Sample)


SLOVENSKI STANDARD
01-januar-2024
Izmenjava podatkov meritev električne energije - Niz DLMS/COSEM - 6-2. del:
Vmesniški razredi COSEM (IEC 62056-6-2:2023)
Electricity metering data exchange - The DLMS/COSEM suite - Part 6-2: COSEM
interface classes (IEC 62056-6-2:2023)
Datenkommunikation der elektrischen Energiemessung - DLMS/COSEM - Teil 6-2:
Interface-Klassen (IEC 62056-6-2:2023)
Echange des données de comptage de l'électricité - La suite DLMS/COSEM - Partie 6-2:
Classes d'interfaces COSEM (IEC 62056-6-2:2023)
Ta slovenski standard je istoveten z: EN IEC 62056-6-2:2023
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
35.110 Omreževanje Networking
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 62056-6-2

NORME EUROPÉENNE
EUROPÄISCHE NORM November 2023
ICS 17.220; 35.110; 91.140.50 Supersedes EN IEC 62056-6-2:2018
English Version
Electricity metering data exchange - The DLMS®/COSEM suite -
Part 6-2: COSEM interface classes
(IEC 62056-6-2:2023)
Échange des données de comptage de l'électricité - La Datenkommunikation der elektrischen Energiemessung -
suite DLMS®/COSEM - Partie 6-2: Classes d'interfaces DLMS®/COSEM - Teil 6-2: COSEM Interface-Klassen
COSEM (IEC 62056-6-2:2023)
(IEC 62056-6-2:2023)
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 62056-6-2:2023 E

European foreword
The text of document 13/1891/FDIS, future edition 4 of IEC 62056-6-2, 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 62056-6-2:2023.
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 IEC 62056-6-2:2018 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 62056-6-2:2023 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 61334-6:2000 NOTE Approved as EN 61334-6:2000 (not modified)
IEC 62056-8-5:2017 NOTE Approved as EN 62056-8-5:2017 (not modified)
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
- - Communication system for and remote EN 13757-2 2004
reading of meters - Part 2: Physical and
link layer
- - Communication system for and remote EN 13757-3 2004
reading of meters - Part 3: Dedicated
application layer
- - Communication system for and remote EN 13757-3 2013
reading of meters - Part 3: Dedicated
application layer
- - Communication system for and remote EN 13757-4 2013
reading of meters - Part 4: Wireless meter
(Radio meter reading for operation in SRD
bands)
- - Communication system for meters - Part 5: EN 13757-5 2015
Wireless M-Bus relaying
IEC 61334-4-32 1996 Distribution automation using distribution EN 61334-4-32 1996
line carrier systems - Part 4: Data
communication protocols - Section 32:
Data link layer - Logical link control (LLC)
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 61334-4-511 2000 Distribution automation using distribution EN 61334-4-511 2000
line carrier systems - Part 4-511: Data
communication protocols - Systems
management - CIASE protocol
IEC 61334-4-512 2001 Distribution automation using distribution EN 61334-4-512 2002
line carrier systems - Part 4-512: Data
communication protocols - System
management using profile 61334-5-1 -
Management Information Base (MIB)
IEC 61334-5-1 2001 Distribution automation using distribution EN 61334-5-1 2001
line carrier systems - Part 5-1: Lower layer
profiles - The spread frequency shift keying
(S-FSK) profile
IEC/TR 62055-21 2005 Electricity metering - Payment systems - - -
Part 21: Framework for standardization
IEC 62056-21 2002 Electricity metering - Data exchange for EN 62056-21 2002
meter reading, tariff and load control - Part
21: Direct local data exchange
IEC 62056-31 1999 Electricity metering - Data exchange for EN 62056-31 2000
meter reading, tariff and load control - Part
31: Use of local area networks on twisted
pair with carrier signalling
IEC 62056-3-1 2013 Electricity metering data exchange - The EN 62056-3-1 2014
DLMS/COSEM suite - Part 3-1: Use of
local area networks on twisted pair with
carrier signalling
IEC 62056-3-1 2021 Electricity metering data exchange - The EN IEC 62056-3-1 2021
DLMS/COSEM suite - Part 3-1: Use of
local area networks on twisted pair with
carrier signalling
IEC 62056-46 2002 Electricity metering - Data exchange for EN 62056-46 2002
meter reading, tariff and load control - Part
46: Data link layer using HDLC protocol
AMD1 2006  A1 2006
IEC 62056-5-3 2023 Electricity metering data exchange - The EN IEC 62056-5-3 2023
DLMS®/COSEM suite - Part 5-3:
DLMS®/COSEM application layer
IEC 62056-6-1 2023 Electricity metering data exchange - The EN IEC 62056-6-1 20XX
DLMS/COSEM suite - Part 6-1: Object
Identification System (OBIS)
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 62056-8-3 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
IEC 62056-8-4 2018 Electricity metering data exchange - The EN IEC 62056-8-4 2019
DLMS/COSEM suite - Part 8-4:
Communication profiles for narrow-band
OFDM PLC PRIME neighbourhood
networks
IEC 62056-8-6 2017 Electricity metering data exchange - The EN 62056-8-6 2017
DLMS/COSEM suite - Part 8-6: High speed
PLC ISO/IEC 12139-1 profile for
neighbourhood networks
Under preparation. Stage at the time of publication: prEN IEC 62056-6-1:2022.
IEC 62056-8-8 2020 Electricity metering data exchange - The EN IEC 62056-8-8 2020
DLMS/COSEM suite - Part 8-8:
Communication profile for ISO/IEC 14908
series networks
IEEE 802.15.4 2006 Standard for Information technology - Local - -
and metropolitan area networks - Specific
requirements - Part 15.4: Wireless Medium
Access Control (MAC) and Physical Layer
(PHY) Specifications for Low Rate
Wireless Personal Area Networks
(WPANs)
IETF STD 51 1994 The Point-to-Point Protocol (PPP) - -
ISO/IEC 8802-2 1998 Information technology - - -
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements) Part 2: Logical link control
ISO/IEC 12139-1 2009 Information technology - - -
Telecommunications and information
exchange between systems - Powerline
communication (PLC) - High speed PLC
medium access control (MAC) and
physical layer (PHY) - Part 1: General
requirements
ISO/IEC 14908-1 2012 Information technology - Control network - -
protocol - Part 1: Protocol stack
ISO/IEC 60559 2020 Information technology - Microprocessor - -
Systems - Floating-Point arithmetic
ISO 4217 - Codes for the representation of currencies - -
ITU-T E.212 2008 Series E: Overall network operation, - -
telephone service, service operation and
human factors - International operation -
Maritime mobile service and public land
mobile service - The international
identification plan for public networks and
subscriptions
ITU-T G.9903 2013 Series G: Transmission systems and - -
Amd. 1 media, digital systems and networks -
Access networks - In premises networks -
Narrow-band orthogonal frequency division
multiplexing power line communication
transceivers for G3-PLC networks
ITU-T G.9903 2014 Series G: Transmission systems and - -
media, digital systems and networks -
Access networks - In premises networks -
Narrow-band orthogonal frequency division
multiplexing power line communication
transceivers for G3-PLC networks
ITU-T G.9903 2017 Series G: Transmission systems and - -
Amd. 1 media, digital systems and networks -
Access networks - In premises networks -
Narrow-band orthogonal frequency division
multiplexing power line communication
transceivers for G3-PLC networks
ITU-T G.9904 2012 Series G: Transmission systems and - -
media, digital systems and networks -
Access networks - In premises networks -
Narrow-band orthogonal frequency division
multiplexing power line communication
transceivers for PRIME networks
ETSI GSM 05.08 1996 Digital cellular telecommunications system - -
(Phase 2+); Radio subsystem link control

IEC 62056-6-2 ®
Edition 4.0 2023-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electricity metering data exchange – The DLMS®/COSEM suite –

Part 6-2: COSEM interface classes

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

Partie 6-2: Classes d'interfaces COSEM

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220, 35.110, 91.140.50 ISBN 978-2-8322-7344-9

– 2 – IEC 62056-6-2:2023  IEC 2023
CONTENTS
FOREWORD . 12
INTRODUCTION . 14
1 Scope . 16
2 Normative references . 16
3 Terms, definitions and abbreviated terms . 18
3.1 Terms and definitions related to the Image transfer process (see 4.4.6) . 19
3.2 Terms and definitions related to the S-FSK PLC setup classes (see 4.10) . 20
3.3 Terms and definitions related to the PRIME NB OFDM PLC setup ICs (see
4.12) . 21
3.4 Terms and definitions related to the ISO/IEC 14908 setup ICs (see 4.18) . 22
3.5 Terms and definitions related to ZigBee® (see 4.15) . 23
3.6 Terms and definitions related to Payment metering interface classes (see
4.6) . 24
3.7 Terms and definitions related to the Arbitrator IC (see 4.5.12) . 28
3.8 Abbreviated terms . 29
4 The COSEM interface classes . 33
4.1 Basic principles . 33
4.1.1 General . 33
4.1.2 Referencing methods . 34
4.1.3 Reserved base_names for special COSEM objects . 35
4.1.4 Class description notation . 35
4.1.5 Common data types . 38
4.1.6 Data formats . 39
4.1.7 The COSEM server model . 44
4.1.8 The COSEM logical device . 45
4.1.9 Information security . 46
4.2 Overview of the COSEM interface classes . 47
4.3 Interface classes for parameters and measurement data . 53
4.3.1 Data (class_id = 1, version = 0) . 53
4.3.2 Register (class_id = 3, version = 0) . 54
4.3.3 Extended register (class_id = 4, version = 0) . 58
4.3.4 Demand register (class_id = 5, version = 0) . 60
4.3.5 Register activation (class_id = 6, version = 0) . 64
4.3.6 Profile generic (class_id = 7, version = 1) . 66
4.3.7 Utility tables (class_id = 26, version = 0) . 72
4.3.8 Register table (class_id = 61, version = 0) . 73
4.3.9 Status mapping (class_id = 63, version = 0) . 76
4.3.10 Compact data (class_id: 62, version: 1) . 77
4.4 Interface classes for access control and management . 85
4.4.1 Overview . 85
4.4.2 Client user identification . 85
4.4.3 Association SN (class_id = 12, version = 4) . 86
4.4.4 Association LN (class_id = 15, version = 3) . 91
4.4.5 SAP assignment (class_id = 17, version = 0) . 98
4.4.6 Image transfer (class_id = 18, version = 0) . 98
4.4.7 Security setup (class_id = 64, version = 1) . 106
4.4.8 Push interface classes and objects . 112

IEC 62056-6-2:2023  IEC 2023 – 3 –
4.4.9 COSEM data protection (class_id = 30, version = 0) . 125
4.4.10 Function control (class_id: 122, version: 0) . 140
4.4.11 Array manager (class_id = 123, version = 0) . 142
4.4.12 Communication port protection (class_id = 124, version = 0) . 147
4.5 Interface classes for time- and event bound control . 150
4.5.1 Clock (class_id = 8, version = 0) . 150
4.5.2 Script table (class_id = 9, version = 0) . 154
4.5.3 Schedule (class_id = 10, version = 0) . 155
4.5.4 Special days table (class_id = 11, version = 0) . 158
4.5.5 Activity calendar (class_id = 20, version = 0) . 160
4.5.6 Register monitor (class_id = 21, version = 0) . 164
4.5.7 Single action schedule (class_id = 22, version = 0) . 165
4.5.8 Disconnect control (class_id = 70, version = 0) . 166
4.5.9 Limiter (class_id = 71, version = 0) . 170
4.5.10 Parameter monitor (class_id = 65, version = 1) . 172
4.5.11 Sensor manager (class_id = 67, version = 0) . 176
4.5.12 Arbitrator (class_id = 68, version = 0) . 180
4.5.13 Modelling examples: tariffication and billing . 184
4.6 Payment metering related interface classes . 186
4.6.1 Overview of the COSEM accounting model . 186
4.6.2 Account (class_id = 111, version = 0) . 188
4.6.3 Credit interface class (class_id = 112, version = 0) . 197
4.6.4 Charge (class_id = 113, version = 0) . 208
4.6.5 Token gateway (class_id = 115, version = 0) . 214
4.7 Interface classes for setting up data exchange via local ports and modems . 216
4.7.1 IEC local port setup (class_id = 19, version = 1) . 216
4.7.2 IEC HDLC setup (class_id = 23, version = 1) . 218
4.7.3 IEC twisted pair (1) setup (class_id = 24, version = 1) . 220
4.7.4 Modem configuration (class_id = 27, version = 1) . 223
4.7.5 Auto answer (class_id = 28, version = 2) . 224
4.7.6 Auto connect (class_id = 29, version = 2) . 228
4.7.7 GPRS modem setup (class_id = 45, version = 0) . 230
4.7.8 GSM diagnostic (class_id: 47, version: 2) . 231
4.7.9 LTE monitoring (class_id: 151, version: 1) . 233
4.8 Interface classes for setting up data exchange via M-Bus . 236
4.8.1 Overview . 236
4.8.2 M-Bus slave port setup (class_id = 25, version = 0) . 237
4.8.3 M-Bus client (class_id = 72, version = 1) . 238
4.8.4 Wireless Mode Q channel (class_id = 73, version = 1) . 242
4.8.5 M-Bus master port setup (class_id = 74, version = 0) . 243
4.8.6 DLMS®/COSEM server M-Bus port setup (class_id = 76, version = 0) . 244
4.8.7 M-Bus diagnostic (class_id = 77, version = 0) . 246
4.9 Interface classes for setting up data exchange over the Internet . 248
4.9.1 TCP-UDP setup (class_id = 41, version = 0) . 248
4.9.2 IPv4 setup (class_id = 42, version = 0) . 250
4.9.3 IPv6 setup (class_id = 48, version = 0) . 253
4.9.4 MAC address setup (class_id = 43, version = 0) . 257
4.9.5 PPP setup (class_id = 44, version = 0) . 257
4.9.6 SMTP setup (class_id = 46, version = 0) . 262

– 4 – IEC 62056-6-2:2023  IEC 2023
4.9.7 NTP setup (class_id = 100, version = 0) . 263
4.10 Interface classes for setting up data exchange using S-FSK PLC. 264
4.10.1 General . 264
4.10.2 Overview . 265
4.10.3 S-FSK Phy&MAC set-up (class_id = 50, version = 1) . 267
4.10.4 S-FSK Active initiator (class_id = 51, version = 0) . 272
4.10.5 S-FSK MAC synchronization timeouts (class_id = 52, version = 0) . 274
4.10.6 S-FSK MAC counters (class_id = 53, version = 0) . 276
4.10.7 IEC 61334-4-32 LLC setup (class_id = 55, version = 1) . 279
4.10.8 S-FSK Reporting system list (class_id = 56, version = 0) . 280
4.11 Interface classes for setting up the LLC layer for ISO/IEC 8802-2 . 281
4.11.1 General . 281
4.11.2 ISO/IEC 8802-2 LLC Type 1 setup (class_id = 57, version = 0) . 281
4.11.3 ISO/IEC 8802-2 LLC Type 2 setup (class_id = 58, version = 0) . 282
4.11.4 ISO/IEC 8802-2 LLC Type 3 setup (class_id = 59, version = 0) . 283
4.12 Interface classes for setting up and managing DLMS®/COSEM narrowband
OFDM PLC profile for PRIME networks . 285
4.12.1 Overview . 285
4.12.2 Mapping of PRIME NB OFDM PLC PIB attributes to COSEM IC
attributes . 286
4.12.3 61334-4-32 LLC SSCS setup (class_id = 80, version = 0) . 288
4.12.4 PRIME NB OFDM PLC Physical layer parameters . 289
4.12.5 PRIME NB OFDM PLC Physical layer counters (class_id = 81, version =

0). 289
4.12.6 PRIME NB OFDM PLC MAC setup (class_id = 82, version = 0) . 290
4.12.7 NB OFDM PLC MAC functional parameters (class_id = 83 version = 0) . 292
4.12.8 PRIME NB OFDM PLC MAC counters (class_id = 84, version = 0). 294
4.12.9 PRIME NB OFDM PLC MAC network administration data (class_id = 85,
version = 0) . 295
4.12.10 PRIME NB OFDM PLC MAC address setup (class_id = 43, version = 0) . 298
4.12.11 PRIME NB OFDM PLC Application identification (class_id = 86, version
= 0). 298
4.13 Interface classes for setting up and managing the DLMS®/COSEM
narrowband OFDM PLC profile for G3-PLC networks . 299
4.13.1 Overview . 299
4.13.2 Mapping of G3-PLC PIB attributes to COSEM IC attributes . 300
4.13.3 G3-PLC MAC layer counters (class_id = 90, version = 1) . 301
4.13.4 G3-PLC MAC setup (class_id = 91, version = 2) . 303
4.13.5 G3-PLC 6LoWPAN adaptation layer setup (class_id = 92, version = 2) . 311
4.14 Interface classes for setting up and managing DLMS®/COSEM HS-PLC
ISO/IEC 12139-1 neighbourhood networks . 318
4.14.1 Overview . 318
4.14.2 HS-PLC ISO/IEC 12139-1 MAC setup (class_id = 140, version = 0) . 318
4.14.3 HS-PLC ISO/IEC 12139-1 CPAS setup (class_id = 141, version = 0) . 320
4.14.4 HS-PLC ISO/IEC 12139-1 IP SSAS setup (class_id = 142, version = 0) . 320
4.14.5 HS-PLC ISO/IEC 12139-1 HDLC SSAS setup (class_id = 143, version =
0). 321
4.15 ZigBee® setup classes . 322
4.15.1 Overview . 322
4.15.2 ZigBee® SAS startup (class_id = 101, version = 0) . 324
4.15.3 ZigBee® SAS join (class_id = 102, version = 0) . 326

IEC 62056-6-2:2023  IEC 2023 – 5 –
4.15.4 ZigBee® SAS APS fragmentation (class_id = 103, version = 0) . 327
4.15.5 ZigBee® network control (class_id = 104, version = 0) . 328
4.15.6 ZigBee® tunnel setup (class_id = 105, version = 0) . 334
4.16 Interface classes for setting up and managing the DLMS®/COSEM profile for
LPWAN networks . 335
4.16.1 General . 335
4.16.2 Generic interface classes . 335
4.16.3 LPWAN specific interface classes . 341
4.17 Interface classes for setting up and managing the DLMS®/COSEM profile for
Wi-SUN networks . 348
4.17.1 Wi-SUN setup (class_id = 95, version 0) . 348
4.17.2 Wi-SUN diagnostic (class_id = 96, version 0) . 352
4.17.3 RPL diagnostic (class_id = 97, version 0) . 356
4.17.4 MPL diagnostic (class_id = 98, version 0) . 358
4.18 Interface classes for setting up and managing the DLMS®/COSEM profile for
ISO/IEC 14908 PLC networks . 360
4.18.1 General . 360
4.18.2 ISO/IEC 14908 identification (class_id = 130, version = 0) . 360
4.18.3 ISO/IEC 14908 protocol setup (class_id = 131, version = 0) . 361
4.18.4 ISO/IEC 14908 protocol status (class_id = 132, version = 0) . 361
4.18.5 ISO/IEC 14908 diagnostic (class_id = 133, version = 0) . 363
5 Previous versions of interface classes . 366
5.1 General . 366
5.1.1 New versions of interface classes . 366
5.1.2 New interface classes . 366
5.1.3 Removal of interface classes . 366
5.2 Previous versions of interface classes – general . 366
5.3 Previous versions of interface classes for parameters and measurement
data . 366
5.3.1 Profile generic (class_id = 7, version = 0) . 366
5.3.2 Compact data (class_id = 62, version = 0) . 370
5.4 Previous versions of interface classes for access control and management . 373
5.4.1 Association SN (class_id = 12, version = 0) . 373
5.4.2 Association SN (class_id = 12, version = 1) . 375
5.4.3 Association SN (class_id = 12, version = 2) . 378
5.4.4 Association SN (Class_id = 12, version =3) . 382
5.4.5 Association LN (class_id = 15, version = 0) . 387
5.4.6 Association LN (class_id = 15, version = 1) . 392
5.4.7 Association LN (class_id = 15, version = 2) . 397
5.4.8 Security setup (class_id = 64, version = 0) . 403
5.4.9 Push Setup (class_id = 40, version = 0) . 405
5.4.10 Push Setup (class_id = 40, version = 1) . 410
5.5 Previous versions of interface classes for time- and event-bound control . 417
5.5.1 Parameter monitor (class_id = 65, version = 0) . 417
5.6 Previous versions of payment metering related interface classes . 418
5.7 Previous versions of interface classes for setting up data exchange via local
ports and modems . 419
5.7.1 IEC local port setup (class_id = 19, version = 0) . 419
5.7.2 IEC HDLC setup, (class_id = 23, version = 0) . 420
5.7.3 IEC twisted pair (1) setup (class_id = 24, version = 0) . 422

– 6 – IEC 62056-6-2:2023  IEC 2023
5.7.4 PSTN modem configuration (class_id = 27, version = 0) . 424
5.7.5 Auto answer (class_id = 28, version = 0) . 426
5.7.6 PSTN auto dial (class_id = 29, version = 0) . 428
5.7.7 Auto connect (class_id = 29, version = 1) . 429
5.7.8 GSM diagnostic (class_id = 47, version = 0) . 431
5.7.9 GSM diagnostic (class_id: 47, version: 1) . 433
5.7.10 LTE monitoring (class_id: 151, version: 0) . 435
5.8 Previous versions of interface classes for setting up data exchange via M-
Bus . 436
5.8.1 M-Bus client (class_id = 72, version = 0) . 436
5.9 Previous versions of interface classes for setting up data exchange over the

internet . 441
5.10 Previous versions of interface classes for data exchange using S-FSK PLC . 441
5.10.1 S-FSK Phy&MAC setup (class_id = 50, version = 0) . 441
5.10.2 S-FSK IEC 61334-4-32 LLC setup (class_id = 55, version = 0) . 446
5.11 Previous versions of interface classes for setting up the LLC layer for
ISO/IEC 8802-2 . 447
5.12 Previous versions of interface classes for setting up and managing
DLMS®/COSEM narrowband OFDM PLC profile for PRIME networks . 447
5.13 Previous versions of interface classes for setting up and managing
DLMS®/COSEM narrowband OFDM PLC profile for G3-PLC networks . 447
5.13.1 Mapping of G3-PLC IB attributes to COSEM IC attributes (Original
version) . 447
5.13.2 G3 NB OFDM PLC MAC layer counters (class_id = 90, version = 0) . 449
5.13.3 G3 NB OFDM PLC MAC setup (class_id = 91, version = 0) . 450
5.13.4 G3 NB OFDM PLC 6LoWPAN adaptation layer setup (class_id = 92,
version = 0) . 454
5.13.5 Mapping of G3-PLC PIB attributes to COSEM IC attributes (previous
version) . 460
5.13.6 G3-PLC MAC setup (class_id = 91, version = 1) . 462
5.13.7 G3-PLC 6LoWPAN adaptation layer setup (class_id = 92, version = 1) . 468
5.14 Previous versions of interface classes for setting up and managing
DLMS®/COSEM HS-PLC ISO/IEC 12139-1 neighbourhood networks . 474
5.15 Previous versions of ZigBee® setup classes . 474
6 Relation to OBIS . 474
6.1 General . 474
6.2 Abstract COSEM objects . 475
6.2.1 Use of value group C . 475
6.2.2 Data of historical billing periods . 476
6.2.3 Billing period values / reset counter entries . 478
6.2.4 Other abstract general purpose OBIS codes . 478
6.2.5 Clock objects (class_id = 8) . 479
6.2.6 Modem configuration and related objects . 479
6.2.7 Script table objects (class_id = 9) . 480
6.2.8 Special days table objects (class_id = 11) . 481
6.2.9 Schedule objects (class_id = 10) . 481
6.2.10 Activity calendar objects (class_id = 20) . 482
6.2.11 Register activation objects (class_id = 6) . 482
6.2.12 Single action schedule objects (class_id = 22) . 482
6.2.13 Register monitor objects (class_id = 21) . 483
6.2.14 Parameter monitor objects (class_id = 65) . 483

IEC 62056-6-2:2023  IEC 2023 – 7 –
6.2.15 Limiter objects (class_id = 71) . 483
6.2.16 Array manager objects (class_id = 123) . 483
6.2.17 Payment metering related objects . 483
6.2.18 IEC local port setup objects (class_id = 19) . 484
6.2.19 Standard readout profile objects (class_id = 7) . 484
6.2.20 IEC HDLC setup objects (class_id = 23) . 485
6.2.21 IEC twisted pair (1) setup objects (class_id = 24) . 485
6.2.22 Objects related to data exchange over M-Bus . 486
6.2.23 Objects to set up data exchange over the Internet . 487
6.2.24 Objects to set up Push Setup (class_id = 40) . 488
6.2.25 Objects for setting up data exchange using S-FSK PLC . 489
6.2.26 Objects for setting up the ISO/IEC 8802-2 LLC layer . 489
6.2.27 Objects for data exchange using narrowband OFDM PLC for PRIME
networks . 490
6.2.28 Objects for data exchange using narrow-band OFDM PLC for G3-PLC
networks . 490
6.2.29 ZigBee® setup objects . 491
6.2.30 Objects for setting up and managing data exchange using ISO/IEC
14908 PLC networks . 491
6.2.31 Objects for data exchange using HS-PLC ISO/IEC 12139-1 ISO/EC
12139-1 networks . 491
6.2.32 Objects for data exchange using Wi-SUN networks . 492
6.2.33 Association objects (class_id = 12, 15) . 492
6.2.34 SAP assignment object (class_id = 17) . 493
6.2.35 COSEM logical device name object . 493
6.2.36 Information security related objects . 493
6.2.37 Image transfer objects (class_id = 18) . 494
6.2.38 Function control objects (class_id = 122) . 494
6.2.39 Communication port protection objects (class_id = 124) . 494
6.2.40 Utility table objects (class_id = 26) . 494
6.2.41 Compact data objects (class_id = 62) . 495
6.2.42 Device ID objects. 495
6.2.43 Metering point ID objects . 496
6.2.44 Parameter changes and calibration objects . 496
6.2.45 I/O control signal objects . 496
6.2.46 Disconnect control objects (class_id = 70) . 496
6.2.47 Arbitrator objects (class_id = 68) . 497
6.2.48 Status of internal control signals objects . 497
6.2.49 Internal operating status objects . 497
6.2.50 Battery entries objects . 498
6.2.51 Power failure monitoring objects . 498
6.2.52 Operating time objects . 499
6.2.53 Environment related parameters objects . 499
6.2.54 Status register objects . 499
6.2.55 Event code objects . 499
6.2.56 Communication port log parameter objects . 500
6.2.57 Consumer message objects .
...

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Frequently Asked Questions

EN IEC 62056-6-2:2023 is a standard published by CLC. Its full title is "Electricity metering data exchange - The DLMS®/COSEM suite - Part 6-2: COSEM interface classes". This standard covers: This part of IEC 62056 specifies a model of a meter as it is seen through its communication interface(s). Generic building blocks are defined using object-oriented methods, in the form of interface classes to model meters from simple up to very complex functionality. Annexes A to F (informative) provide additional information related to some interface classes.

This part of IEC 62056 specifies a model of a meter as it is seen through its communication interface(s). Generic building blocks are defined using object-oriented methods, in the form of interface classes to model meters from simple up to very complex functionality. Annexes A to F (informative) provide additional information related to some interface classes.

EN IEC 62056-6-2:2023 is classified under the following ICS (International Classification for Standards) categories: 17.220 - Electricity. Magnetism. Electrical and magnetic measurements; 35.110 - Networking; 91.140.50 - Electricity supply systems. The ICS classification helps identify the subject area and facilitates finding related standards.

EN IEC 62056-6-2:2023 has the following relationships with other standards: It is inter standard links to EN IEC 62056-6-2:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN IEC 62056-6-2:2023 is associated with the following European legislation: Standardization Mandates: M/441, M/490. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

You can purchase EN IEC 62056-6-2:2023 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CLC standards.

Die Norm EN IEC 62056-6-2:2023 ist ein bedeutendes Dokument im Bereich des Elektrizitätsmessens und der Datenkommunikation. Sie behandelt den Austausch von Daten im Rahmen des DLMS®/COSEM-Systems und stellt eine essentielle Grundlage für die Implementierung von Kommunikationsschnittstellen in Zählsystemen bereit. Der Umfang dieser Norm erstreckt sich über die Spezifikation eines Modells eines Zählers aus der Perspektive seiner Kommunikationsschnittstellen. Eine der herausragenden Stärken dieser Norm ist die Verwendung objektorientierter Methoden zur Definition generischer Bausteine in Form von Schnittstellenklassen. Diese Methodik ermöglicht es, Zähler mit einer breiten Palette von Funktionen zu modellieren, von einfachen bis hin zu sehr komplexen Anwendungen. Dies sorgt nicht nur für Flexibilität, sondern auch für eine hohe Interoperabilität zwischen unterschiedlichen Geräten und Systemen, was in der heutigen vernetzten Welt von entscheidender Bedeutung ist. Zusätzlich bieten die Anhänge A bis F der Norm informative Ergänzungen zu verschiedenen Schnittstellenklassen, wodurch Anwender im Feld einen tieferen Einblick in spezifische Implementierungsdetails erhalten. Diese Ergänzungen stehen im Einklang mit der Norm und unterstützen Fachleute dabei, die Anwendung der Schnittstellenklassen zu verstehen und effektiv umzusetzen. Die Relevanz der EN IEC 62056-6-2:2023 kann nicht hoch genug eingeschätzt werden, da sie einen entscheidenden Beitrag zur Standardisierung im Bereich der Elektrizitätsmessung leistet. Angesichts des zunehmenden Bedarfs an zuverlässigen und effizienten Messsystemen in der Energiewirtschaft ist diese Norm unverzichtbar für die Entwicklung und den Austausch von Zählerdaten, die die Basis für moderne Energieverwaltungssysteme bilden.

La norme EN IEC 62056-6-2:2023 concernant l'échange de données de comptage d'électricité est un document essentiel qui définit un modèle de compteur à travers ses interfaces de communication. Ce standard, en utilisant des méthodes orientées objet, propose des blocs de construction génériques qui permettent de modéliser des compteurs allant de fonctionnalités simples à très complexes. Cette approche y confère une grande flexibilité, rendant la norme particulièrement pertinente dans un contexte où la diversité des appareils de mesure augmente de manière exponentielle. Les classes d'interface du COSEM sont mises en avant, permettant ainsi une intégration harmonieuse des équipements dans les systèmes de gestion de l'énergie. La clarté et la structuration des classes offrent aux développeurs et aux fabricants une référence solide pour la conception de solutions conformes, contribuant ainsi à l'uniformisation de l'interopérabilité entre dispositifs. Les annexes A à F fournissent des informations supplémentaires sur certaines classes d'interface, renforçant ainsi la compréhension et l'application de la norme. Cela favorise une adoption plus large et harmonisée des technologies DLMS®/COSEM dans le secteur de la mesure électrique, ce qui est crucial pour assurer la compatibility et l'efficacité des évolutions technologiques futures. En conclusion, la norme EN IEC 62056-6-2:2023 est un pilier fondamental pour l'échange de données de comptage d'électricité, apportant des solutions concrètes et adaptées aux défis contemporains liés à la gestion des données énergétiques.

SIST EN IEC 62056-6-2:2024 표준은 전기 계량 데이터 교환을 위한 DLMS®/COSEM 스위트의 중요한 부분으로, COSEM 인터페이스 클래스에 대한 모델을 제공합니다. 이 표준은 통신 인터페이스를 통해 계량기를 바라보는 방식을 규정하고 있으며, 전기 계량기의 다양한 기능을 효과적으로 모델링하기 위한 객체 지향 방법론을 기반으로 한 일반적인 구성 요소를 정의합니다. 이 표준의 주요 강점 중 하나는 다양한 복잡성을 가진 계량기를 모델링할 수 있는 인터페이스 클래스를 제공한다는 것입니다. 이는 전기 계량기의 기능이 간단한 것부터 복잡한 것까지 포괄적으로 포함될 수 있게 하여, 사용자와 개발자 모두에게 유연성과 접근성을 제공합니다. 또한, 부록 A부터 F까지의 정보는 특정 인터페이스 클래스에 대한 추가적인 정보를 제공함으로써, 사용자가 표준을 최적으로 활용할 수 있도록 지원합니다. EN IEC 62056-6-2:2023은 전기 계량기의 데이터 교환을 표준화하는 데 중요한 역할을 하며, 이는 스마트 그리드 및 전력 관리 시스템의 발전에 필수적입니다. 이러한 표준의 채택은 전력 사용의 효율성을 높이고, 데이터 호환성 문제를 줄이며, 시스템 간의 상호 운용성을 보장하는 데 기여합니다. 결론적으로, 이 표준은 전기 계량 데이터의 교환을 위한 공통 프레임워크를 제공함으로써, 전력 산업에서의 혁신과 발전을 향한 길을 열어줍니다.

EN IEC 62056-6-2:2023は、電力計測データの交換における重要な標準として、その範囲や強みが明確に定義されています。この標準の主な目的は、通信インターフェースを介して見たときのメーターのモデルを指定することにあります。この文書は、シンプルから非常に複雑な機能を持つメーターをモデル化するためのオブジェクト指向の方法を用いた汎用のビルディングブロックを定義しています。 この標準の強みは、何よりもまず、メーターのインターフェースクラスに基づいた設計の柔軟性にあります。これにより、様々な機能要件を持つメーターに対応可能であり、技術的な進化にもスムーズに適応できます。また、附属書AからFには、特定のインターフェースクラスに関連する追加情報が提供されており、ユーザーや開発者がより詳細に理解し、実装に役立てることができる点も評価されます。 さらに、EN IEC 62056-6-2:2023は国際的な標準であり、これに準拠することでグローバルな整合性と相互運用性を確保できるため、ビジネスの国際化においても非常に重要な役割を果たします。このように、標準の適用は単に技術的な側面に留まらず、企業間の取引や新しい市場への参入にも寄与することから、その関連性は高いといえます。 総じて、EN IEC 62056-6-2:2023は、電力計測データの交換において非常に実用的かつ重要なガイドラインを提供しており、その適用範囲と強みは、今後のスマートメーターやエネルギー管理システムの発展においてますます重要になっていくでしょう。

The standard EN IEC 62056-6-2:2023 focuses comprehensively on electricity metering data exchange through the DLMS®/COSEM suite, providing essential guidance on the modeling of meters via their communication interfaces. This part of the standard delineates the interface classes that represent various functionalities of electrical meters, embracing an object-oriented approach that enhances the clarity and usability of the meter interface models. One of the key strengths of this standard is its provision of generic building blocks, which enables manufacturers and developers to model meters ranging from basic to highly intricate systems. This flexibility is crucial in meeting diverse market needs and ensuring compatibility between different manufacturers, thus fostering interoperability in the electricity metering landscape. Another significant aspect of EN IEC 62056-6-2:2023 is the inclusion of informative annexes (A to F), which enrich the core content by offering supplementary information on specific interface classes. This additional context supports users in effectively implementing the standard and aids in troubleshooting and operational efficiencies. The relevance of this standard is underscored by its alignment with the evolving requirements for smarter electricity metering systems. As the demand for robust and efficient metering solutions increases, the structured communication model detailed in this standard ensures that stakeholders can seamlessly exchange data, ultimately contributing to enhanced energy management and sustainability objectives. Overall, EN IEC 62056-6-2:2023 stands out for its methodical approach to electricity metering data exchange, making it an essential resource for professionals involved in the design and implementation of metering solutions. Its emphasis on object-oriented methodology, flexibility in meter modeling, and additional informative content solidifies its position as a vital standard in the realm of electricity metering.