SIST EN 62056-5-3:2014

SLOVENSKI STANDARD
SIST EN 62056-5-3:2014
01-maj-2014
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SIST EN 62056-53:2007
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Electricity metering data exchange - The DLMS/COSEM suite - Part 5-3: DLMS/COSEM
application layer
Datenkommunikation der elektrischen Energiemessung - DLMS/COSEM - Teil 5-3:
DLMS/COSEM-Anwendungsschicht
Echange de données sur les équipements de mesure de l'énergie électrique - Suite
DLMS/COSEM - Partie 5-3: Couche application DLMS/COSEM
Ta slovenski standard je istoveten z: EN 62056-5-3:2014
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
35.100.70 Uporabniški sloj Application layer
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
SIST EN 62056-5-3:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62056-5-3:2014

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SIST EN 62056-5-3:2014

EUROPEAN STANDARD
EN 62056-5-3

NORME EUROPÉENNE
March 2014
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 5-3: DLMS/COSEM application layer
(IEC 62056-5-3:2013)


Échange des données de comptage de Datenkommunikation der elektrischen
l'électricité - Energiemessung - DLMS/COSEM -
La suite DLMS/COSEM - Teil 5-3: DLMS/COSEM-
Partie 5-3: Couche application Anwendungsschicht
DLMS/COSEM (IEC 62056-5-3:2013)
(CEI 62056-5-3:2013)




This European Standard was approved by CENELEC on 2013-07-10. 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


© 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62056-5-3:2014 E

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SIST EN 62056-5-3:2014
EN 62056-5-3:2014 - 2 -
Foreword
The text of document 13/1523/FDIS, future edition 1 of IEC 62056-5-3, 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 62056-5-3:2014.

The following dates are fixed:
(dop) 2014-09-07
• 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) 2016-07-10
standards conflicting with the
document have to be withdrawn

This document supersedes EN 62056-53:2007 (PART).

EN 62056-5-3:2014 includes the following significant technical changes with respect to
EN 62056-53:2007:
The significant technical changes with respect to EN 62056-53 are listed in Annex F.

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 62056-5-3:2013 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 standards indicated:

IEC 61334-4-32:1996 NOTE Harmonized as EN 61334-4-32:1996 (not modified).
IEC 61334-4-511:2000 NOTE Harmonized as EN 61334-4-511:2000 (not modified).
IEC 61334-4-512:2001 NOTE Harmonized as EN 61334-4-512:2002 (not modified).
IEC 61334-5-1:2001 NOTE Harmonized as EN 61334-5-1:2001 (not modified).
1) 1)
IEC 62056-1-0 NOTE Harmonized as EN 62056-1-0 .
2)
ISO/IEC 7498-1:1994 NOTE Harmonized as EN ISO/IEC 7498-1:1995 (not modified).


1)
At draft stage.
2)
Withdrawn publication.

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SIST EN 62056-5-3:2014
- 3 - EN 62056-5-3:2014
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  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 61334-4-41 1996 Distribution automation using distribution EN 61334-4-41 1996
line carrier systems -
Part 4: Data communication protocols -
Section 41: Application protocols -
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 - -
+ corr. June 2005 meter reading, tariff and load control -
Glossary of terms -
Part 1: Terms related to data exchange with
metering equipment using DLMS/COSEM


IEC 62056-6-1 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 62056-8-3 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


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 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)

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SIST EN 62056-5-3:2014
EN 62056-5-3:2014 - 4 -
Publication Year Title EN/HD Year
3)
FIPS PUB 180-1 1995 Secure hash standard - -


FIPS PUB 197 2001 Advanced Encryption Standard (AES) - -

NIST SP 800-38D 2007 Recommendation for Block Cipher Modes of - -
Operation: Galois/Counter Mode (GCM) and
GMAC


4)
NIST SP 800-57 2007 Recommendation for key management - - -
Part 1: General


RFC 1321 1992 Internet Engineering Task Force (IETF). The - -
MD5 Message-Digest Algorithm. Edited by
R. Rivest (MIT Laboratory for Computer
Science and RSA Data Security, Inc.)


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 2005 The Use of Galois/Counter Mode (GCM) in - -
IPsec Encapsulating Security Payload (ESP)




3)
Superseded by FIPS PUB 180-2:2002, which is also superseded by FIPS PUB 180-4:2012.
4)
Superseded by NIST SP 800-57:2012.

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SIST EN 62056-5-3:2014




IEC 62056-5-3

®


Edition 1.0 2013-06




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

PRICE CODE
INTERNATIONALE

CODE PRIX XH


ICS 17.220; 35.110; 91.140.50 ISBN 978-2-83220-812-0



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

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SIST EN 62056-5-3:2014
– 2 – 62056-5-3 © IEC:2013
CONTENTS
FOREWORD . 7
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and abbreviations . 11
3.1 Terms and definitions . 11
3.2 Abbreviations . 11
4 Overview . 13
4.1 COSEM application layer structure . 13
4.2 COSEM application layer services . 14
4.2.1 ASO services . 14
4.2.2 Services provided for application association establishment and
release . 14
4.2.3 Services provided for data transfer . 15
4.2.4 Layer management services . 19
4.2.5 Summary of COSEM application layer services . 19
4.3 COSEM application layer protocols . 20
5 Information security in DLMS/COSEM . 20
5.1 Definitions . 20
5.2 General . 20
5.3 Data access security . 21
5.3.1 Overview . 21
5.3.2 Lowest level security (no security) . 21
5.3.3 Low Level Security (LLS) . 21
5.3.4 High Level Security (HLS) . 22
5.4 Data transport security . 23
5.4.1 Applying, removing or checking the protection: ciphering and
deciphering. 23
5.4.2 Security context . 25
5.4.3 Security policy . 25
5.4.4 Security suite . 25
5.4.5 Security material . 26
5.4.6 Ciphered xDLMS APDUs . 26
5.4.7 Cryptographic keys . 27
5.4.8 The Galois/Counter Mode of Operation (GCM) . 30
6 COSEM application layer service specification . 40
6.1 Service primitives and parameters . 40
6.2 The COSEM-OPEN service . 42
6.3 The COSEM-RELEASE service . 47
6.4 COSEM-ABORT service . 49
6.5 Security parameters . 50
6.6 The GET service . 51
6.7 The SET service . 53
6.8 The ACTION service . 56
6.9 The EventNotification service . 60
6.10 The TriggerEventNotificationSending service . 61
6.11 Variable access specification . 62
6.12 The Read service . 63

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SIST EN 62056-5-3:2014
62056-5-3 © IEC:2013 – 3 –
6.13 The Write service . 67
6.14 The UnconfirmedWrite service . 70
6.15 The InformationReport service. 71
6.16 Client side layer management services: the SetMapperTable.request . 72
6.17 Summary of services and LN/SN data transfer service mapping . 72
7 COSEM application layer protocol specification . 73
7.1 The control function . 73
7.1.1 State definitions of the client side control function . 73
7.1.2 State definitions of the server side control function . 75
7.2 The ACSE services and APDUs . 76
7.2.1 ACSE functional units, services and service parameters . 76
7.2.2 Registered COSEM names . 79
7.2.3 APDU encoding rules . 81
7.2.4 Protocol for application association establishment . 81
7.2.5 Protocol for application association release . 85
7.3 Protocol for the data transfer services . 89
7.3.1 Negotiation of services and options – the conformance block . 89
7.3.2 Confirmed and unconfirmed service invocations . 90
7.3.3 Protocol for the GET service . 91
7.3.4 Protocol for the SET service . 94
7.3.5 Protocol for the ACTION service . 97
7.3.6 Protocol for the EventNotification service . 99
7.3.7 Protocol for the Read service . 100
7.3.8 Protocol for the Write service. 104
7.3.9 Protocol for the UnconfirmedWrite service . 108
7.3.10 Protocol for the InformationReport service . 109
8 Abstract syntax of ACSE and COSEM APDUs . 110
Annex A (normative) Using the COSEM application layer in various communications
profiles . 124
Annex B (informative) AARQ and AARE encoding examples . 126
Annex C (informative) Encoding examples: AARQ and AARE APDUs using a ciphered
application context . 140
Annex D (informative) Data transfer service examples . 148
Annex E (informative) Overview of cryptography . 163
Annex F (informative) Significant technical changes with respect to IEC 62056-53 . 169
Bibliography . 172
Index . 174

Figure 1 – Structure of the COSEM Application layers . 13
Figure 2 – Summary of COSEM AL services . 19
Figure 3 – LLS and HLS authentication . 23
Figure 4 – Data transport security in DLMS/COSEM . 24
Figure 5 – Ciphered xDLMS APDUs . 26
Figure 6 – Cryptographic protection of xDLMS APDUs using GCM . 33
Figure 7 – Service primitives . 40
Figure 8 – Time sequence diagrams . 41
Figure 9 – Partial state machine for the client side control function . 74

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SIST EN 62056-5-3:2014
– 4 – 62056-5-3 © IEC:2013
Figure 10 – Partial state machine for the server side control function . 75
Figure 11 – MSC for successful AA establishment preceded by a successful lower
layer connection establishment . 82
Figure 12 – Graceful AA release using the A-RELEASE service . 87
Figure 13 – Graceful AA release by disconnecting the supporting layer . 88

Figure 14 – Aborting an AA following a PH-ABORT.indication . 89
Figure 15 – MSC of the GET service . 92
Figure 16 – MSC of the GET service with block transfer . 92
Figure 17 – MSC of the GET service with block transfer, long GET aborted . 94
Figure 18 – MSC of the SET service . 95
Figure 19 – MSC of the SET service with block transfer . 96
Figure 20 – MSC of the ACTION service . 98
Figure 21 – MSC of the ACTION service with block transfer . 99
Figure 22 – MSC of the Read service used for reading an attribute . 102
Figure 23 – MSC of the Read service used for invoking a method . 103
Figure 24 – MSC of the Read Service used for reading an attribute, with block transfer . 104
Figure 25 – MSC of the Write service used for writing an attribute . 107
Figure 26 – MSC of the Write service used for invoking a method . 107
Figure 27 – MSC of the Write Service used for writing an attribute, with block transfer . 108
Figure 28 – MSC of the Unconfirmed Write service used for writing an attribute . 109
Figure E.1 – Hash function. 164
Figure E.2 – Encryption and decryption. 165
Figure E.3 – Message Authentication Codes (MACs) . 166

Table 1 – Clarification of the meaning of PDU Size for DLMS/COSEM . 16
Table 2 – Security suites . 26
Table 3 – Security control field . 27
Table 4 – Cryptographic keys and their management . 30
Table 5 – Plaintext and additional authenticated data . 34
Table 6 – Example for ciphered APDUs . 37
Table 7 – HLS example with GMAC . 39
Table 8 – Codes for AL service parameters . 42
Table 9 – Service parameters of the COSEM-OPEN service primitives . 43
Table 10 – Service parameters of the COSEM-RELEASE service primitives . 47
Table 11 – Service parameters of the COSEM-ABORT service primitives . 50
Table 12 – Security parameters . 50
Table 13 – Service parameters of the GET service . 51
Table 14 – GET service request and response types . 52
Table 15 – Service parameters of the SET service . 54
Table 16 – SET service request and response types . 55
Table 17 – Service parameters of the ACTION service . 57
Table 18 – ACTION service request and response types . 58
Table 19 – Service parameters of the EventNotification service primitives . 60

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SIST EN 62056-5-3:2014
62056-5-3 © IEC:2013 – 5 –
Table 20 – Service parameters of the TriggerEventNotificationSending.request service
primitive . 61
Table 21 – Variable Access Specification . 63
Table 22 – Service parameters of the Read service . 64
Table 23 – Use of the Variable_Access_Specification variants and the Read.response
choices . 65
Table 24 – Service parameters of the Write service . 68
Table 25 – Use of the Variable_Access_Specification variants and the Write.response
choices . 68
Table 26 – Service parameters of the UnconfirmedWrite service . 70
Table 27 – Use of the Variable_Access_Specification variants . 71
Table 28 – Service parameters of the InformationReport service. 72
Table 29 – Service parameters of the SetMapperTable.request service primitives . 72
Table 30 – Summary of ACSE services . 73
Table 31 – Summary of xDLMS services for LN referencing . 73
Table 32 – Summary of xDLMS services for SN referencing . 73
Table 33 – ACSE functional units, services and service parameters. 77
Table 34 – Use of ciphered / unciphered APDUs . 80
Table 35 – xDLMS Conformance block . 90
Table 36 – GET service types and APDUs . 91
Table 37 – SET service types and APDUs . 95
Table 38 – ACTION service types and APDUs . 98
Table 39 – Mapping between the GET and the Read services . 100
Table 40 – Mapping between the ACTION and the Read services . 101
Table 41 – Mapping between the SET and the Write services . 105
Table 42 – Mapping between the ACTION and the Write service. 106
Table 43 – Mapping between the SET and the UnconfirmedWrite services . 108
Table 44 – Mapping between the ACTION and the UnconfirmedWrite services . 109
Table 45 – Mapping between the EventNotification and InformationReport services . 110
Table B.1 – Conformance block . 127
Table B.2 – A-XDR encoding of the xDLMS InitiateRequest APDU . 128
Table B.3 – A-XDR encoding of the xDLMS InitiateResponse APDU . 129
Table B.4 – BER encoding of the AARQ APDU . 132
Table B.5 – Complete AARQ APDU . 134
Table B.6 – BER encoding of the AARE APDU . 135
Table B.7 – The complete AARE APDU . 139
Table C.1 – A-XDR encoding of the xDLMS InitiateRequest APDU . 140
Table C.2 – Authenticated encryption of the xDLMS InitiateRequest APDU .
...