SIST EN 62056-7-6:2013

SLOVENSKI STANDARD
SIST EN 62056-7-6:2013
01-november-2013
1DGRPHãþD
SIST EN 62056-53:2007
,]PHQMDYDSRGDWNRYPHULWHYHOHNWULþQHHQHUJLMH1L]'/06&26(0GHO
SODVWQLSRYH]RYDOQRQDUDYQDQNRPXQLNDFLMVNLSURILOQDRVQRYL+'/&,(&

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
SIST EN 62056-7-6:2013 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62056-7-6:2013

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SIST EN 62056-7-6:2013

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

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SIST EN 62056-7-6:2013
EN 62056-7-6:2013 - 2 -
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

EN 62056-7-6:2013 supersedes partially EN 62056-53:2007.

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.

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SIST EN 62056-7-6:2013
- 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

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SIST EN 62056-7-6:2013

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SIST EN 62056-7-6:2013




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



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

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SIST EN 62056-7-6:2013
– 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

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SIST EN 62056-7-6:2013
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
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.
The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed that compliance
with this International Standard may involve the use of a maintenance service concerning the stack of protocols on
which the present standard IEC 62056-7-6 is based.
The IEC takes no position concerning the evidence, validity and scope of this maintenance service.
The provider of the maintenance service has assured the IEC that he is willing to provide services under
reasonable and non-discriminatory terms and conditions for applicants throughout the world. In this respect, the
statement of the provider of the maintenance service is registered with the IEC. Information may be obtained from
1
DLMS User Association
Zug/Switzerland
www.dlms.ch
___________
1
 Device Language Message Specification.

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SIST EN 62056-7-6:2013
– 4 – 62056-7-6 © IEC:2013
International Standard IEC 62056-7-6 has been prepared by Technical Committee 13,
Electrical energy measurement, tariff- and load control.
It is based on IEC 62056-53:2006, 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 IEC 62056-53:2006 contains the specification of the DMS/COSEM communication profiles whereas the
2
new edition, IEC 62056-5-3:— , which replaces it, does not.
• The title of the standard has been aligned with the title of other parts of the revised
IEC 62056 series;
• A Figure showing the protocol stack has been added to Clause 5.
The text of this standard is based on the following documents:
FDIS Report on voting
13/1527/FDIS 13/1545/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.
A list of all the 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.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
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.


___________
2
To be published simultaneously with this part of IEC 62056.

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SIST EN 62056-7-6:2013
62056-7-6 © IEC:2013 – 5 –
ELECTRICITY METERING DATA EXCHANGE –
THE DLMS/COSEM SUITE –

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



1 Scope
This part of IEC 62056 specifies the DLMS/COSEM 3-layer, connection-oriented HDLC based
communication profile.
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 62056-21:2002, Electricity metering – Data exchange for meter reading, tariff and load
control – Part 21: Direct local data exchange
IEC 62056-42:2002, 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 62056-46:2002, Electricity metering – Data exchange for meter reading, tariff and load
control – Part 46: Data link layer using HDLC protocol
Amendment 1:2006
IEC 62056-5-3:—, Electricity metering data exchange – The DLMS/COSEM suite – Part 5-3:
DLMS/COSEM application layer
NOTE See also the Bibliography.
3 Terms, definitions and abbreviations
AA Application Association
AARQ A-Associate Request – an APDU of the ACSE
ACSE Association Control Service Element
AL Application Layer
APDU Application Layer Protocol Data Unit
ASO Application Service Object
Client A station, asking for services. In the case of the 3-layer, CO HDLC based
profile it is the master station
.cnf confirm service primitive
CO Connection-oriented
COSEM Companion Specification for Energy Metering
DLMS Device Language Message Specification
DLMS UA DLMS User Association

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SIST EN 62056-7-6:2013
– 6 – 62056-7-6 © IEC:2013
GSM Global System for Mobile Communications
HDLC High-level Data Link Control
HHU Hand Held Unit
I Information frame (a HDLC frame type)
.ind .indication service primitive
LLC Logical Link Control (Sublayer)
MAC Medium Access Control (sublayer)
MAC Message Authentication Code (cryptography)
master Central station – station which takes the initiative and controls the data flow
NRM Normal Response Mode
OSI Open System Interconnection
PDU Protocol Data Unit
P/F Poll/Final
PhL Physical Layer
PSTN Public Switched Telephone Network
.req .request service primitive
.res .response service primitive
RNR Receive Not Ready (a HDLC frame type)
RR Receive Ready (a HDLC frame type)
SAP Service Access Point
SNRM Set Normal Response Mode (a HDLC frame type)
Server A station, delivering services. The tariff device (meter) is normally the server,
delivering the requested values or executing the requested tasks.
Slave Station
...