EN 62056-7-6:2013

SLOVENSKI STANDARD
01-november-2013
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SIST EN 62056-53:2007
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Electricity metering data exchange - the DLMS/COSEM suite - Part 7-6: The 3-layer,
connection-oriented HDLC based communication profile (IEC 62056-7-6:2013)
Datenkommunikation der elektrischen Energiemessung - DLMS/COSEM - Teil 7-6:
HDLC basiertes 3-Schichten Kommunikations-Protokoll (IEC 62056-7-6:2013)
Echange de données dans les équipements de mesure de l'énergie électrique - suite
DLMS/COSEM - Partie 7-6: Profil de communication triple couche, orienté connexion et
basé sur HDLC (CEI 62056-7-6:2013)
Ta slovenski standard je istoveten z: EN 62056-7-6:2013
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 62056-7-6
NORME EUROPÉENNE
September 2013
EUROPÄISCHE NORM
ICS 17.220; 35.110; 91.140.50 Supersedes EN 62056-53:2007 (partially)

English version
Electricity metering data exchange -
The DLMS/COSEM suite -
Part 7-6: The 3-layer, connection-oriented HDLC based communication
profile
(IEC 62056-7-6:2013)
Echange des données de comptage de Datenkommunikation der elektrischen
l'électricité - Energiemessung -
La suite DLMS/COSEM - DLMS/COSEM -
Partie 7-6: Profil de communication à 3 Teil 7-6: HDLC basiertes 3-Schichten
couches, orienté connexion et basé sur Kommunikations-Protokoll
HDLC (IEC 62056-7-6:2013)
(CEI 62056-7-6:2013)
This European Standard was approved by CENELEC on 2013-06-20. 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.

CENELEC
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

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62056-7-6:2013 E
Foreword
The text of document 13/1527/FDIS, future edition 1 of IEC 62056-7-6, 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 62056-7-6:2013.
The following dates are fixed:
• latest date by which the document has
(dop) 2014-03-20
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national
(dow) 2016-06-20
standards conflicting with the

document have to be withdrawn
It is based on EN 62056-53:2007, Electricity metering – Data exchange for meter reading, tariff and load
control – Part 53: COSEM application layer, Annex B.2 The 3-layer, connection-oriented, HDLC based
communication profile and introduces the following significant technical changes:
NOTE EN 62056-53:2007 contains the specification of the DMS/COSEM communication profiles whereas the new edition,
EN 62056-5-3:2013, which replaces it, does not.
• The title of the standard has been aligned with the title of other parts of the revised EN 62056 series;
• A Figure showing the protocol stack has been added to Clause 5.
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 62056-7-6:2013 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 62056-7-6:2013
Annex ZA
(normative)
Normative references to i nternational 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 62056-5-3 2013 Electricity metering data exchange - The EN 62056-5-3 2013
DLMS/COSEM suite -
Part 5-3: DLMS/COSEM application layer

IEC 62056-21 2002 Electricity metering - Data exchange for meter EN 62056-21 2002
reading, tariff and load control -
Part 21: Direct local data exchange

IEC 62056-42 2002 Electricity metering - Data exchange for meter EN 62056-42 2002
reading, tariff and load control -
Part 42: Physical layer services and
procedures for connection-oriented
asynchronous data exchange
IEC 62056-46 2002 Electricity metering - Data exchange for meter EN 62056-46 2002
+ A1 2006 reading, tariff and load control - + A1 2007
Part 46: Data link layer using HDLC protocol

IEC 62056-7-6 ®
Edition 1.0 2013-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electricity metering data exchange – The DLMS/COSEM suite –

Part 7-6: The 3-layer, connection-oriented HDLC based communication profile

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

Partie 7-6: Profil de communication à 3 couches, orienté connexion et basé sur

HDLC
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX Q
ICS 17.220; 35.110; 91.140.50 ISBN 978-2-83220-806-9

– 2 – 62056-7-6 © IEC:2013
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 5
4 Targeted communication environments . 6
5 Structure of the profile . 6
6 Identification and addressing scheme . 7
7 Supporting layer services and service mapping . 8
8 Communication profile specific service parameters of the DLMS/COSEM AL
services . 9
9 Specific considerations / constraints . 9
9.1 Confirmed and unconfirmed AAs and data transfer service invocations, frame
types used . 9
9.2 Correspondence between AAs and data link layer connections, releasing
AAs . 10
9.3 Service parameters of the COSEM-OPEN / -RELEASE / -ABORT services. 10
9.4 EventNotification service and protocol . 11
9.5 Transporting long messages . 13
9.6 Supporting multi-drop configurations . 13
Bibliography . 15
Index . 16

Figure 1 – The DLMS/COSEM 3-layer, connection oriented, HDLC based
communication profile . 7
Figure 2 – Identification/addressing scheme in the 3-layer, CO, HDLC-based
communication profile . 8
Figure 3 – Summary of data link layer services . 9
Figure 4 – Example: EventNotificaton triggered by the client . 12
Figure 5 – Multi-drop configuration and its model . 13
Figure 6 – Master/ Slave operation on the multi-drop bus . 13

Table 1 – Application associations and data exchange in the 3-layer, CO, HDLC-based
profile . 10

62056-7-6 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICITY METERING DATA EXCHANGE –
THE DLMS/COSEM SUITE –
Part 7-6: The 3-layer, connection-oriented
HDLC based communication profile

FOREWORD
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