Electricity metering data exchange - The DLMS/COSEM suite - Part 8-8: Communication profile for ISO/IEC 14908 series networks

This part of IEC 62056 describes how the DLMS/COSEM Application layer and the COSEM
object model as specified in IEC 62056‑5‑3:2017, IEC 62056‑6‑1:2017 and IEC 62056‑6‑2:2017
can be used over the lower layers specified in the IEC 14908 series, forming a DLMS/COSEM
ISO/IEC 14908 communication profile.
This document is part of the IEC 62056 series. Its structure follows IEC 62056-1-0 and
IEC TS 62056-1-1.
Annex A (informative) provides examples of representative instances of data exchange.
NOTE This Annex A is included and referenced for consistency with other parts of the IEC 62056 suite, but it is
empty.
Annex B (normative) defines COSEM interface classes and related OBIS codes for setting up
and managing the DLMS/COSEM communication profile for IEC 14908 networks. These
interface classes and OBIS codes will be moved later to IEC 62056-6-2 and IEC 62056-6-1.
Annex C (informative) provides an implementation guide and specifies a migration path from
Utility Tables based applications to DLMS/COSEM based applications.
Annex D (informative) specifies the OSGP-AES-128-PSK security suite for optional use on the
adaptation layer level.
Annex E (normative) specifies the repeating mechanism over the ISO 14908-3 Power Line
Channel network.
Annex F (informative) specifies ISO/IEC 14908-3 Registration and monitoring of LNAPs.

Datenkommunikation der elektrischen Energiemessung - DLMS/COSEM - Teil 8-8: Kommunikationsprofil für Netzwerke der Reihe ISO/IEC 14908

Échange des données de comptage de l'électricité - La suite DLMS/COSEM - Partie 8-8: Profil de communication pour réseaux de la série ISO/IEC 14908

IEC 62056-8-8:2020 décrit la manière dont la couche application DLMS/COSEM et le modèle d'objet COSEM spécifiés dans l'IEC 62056‑5‑3:2017, l'IEC 62056‑6‑1:2017 et l'IEC 62056‑6‑2:2017 peuvent être utilisés sur les couches inférieures spécifiées dans la série IEC 14908, pour former un profil de communication DLMS/COSEM ISO/IEC14908. Le présent document fait partie de la série IEC 62056. Sa structure s'aligne sur celle de l'IEC 62056-1-0 et de l'IEC TS 62056-1-1.

Izmenjava podatkov meritev električne energije - Niz DLMS/COSEM - 8-8. del: Komunikacijski profil za omrežja serije ISO/IEC 14908

General Information

Status
Published
Publication Date
20-Jul-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Jul-2020
Due Date
11-Sep-2020
Completion Date
21-Jul-2020

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SLOVENSKI STANDARD
SIST EN IEC 62056-8-8:2020
01-september-2020
Izmenjava podatkov meritev električne energije - Niz DLMS/COSEM - 8-8. del:
Komunikacijski profil za omrežja serije ISO/IEC 14908

Electricity metering data exchange - The DLMS/COSEM suite - Part 8-8: Communication

profile for ISO/IEC 14908 series networks
Datenkommunikation der elektrischen Energiemessung - DLMS/COSEM - Teil 8-8:
Kommunikationsprofil für Netzwerke der Reihe ISO/IEC 14908

Échange des données de comptage de l'électricité - La suite DLMS/COSEM - Partie 8-8:

Profil de communication pour réseaux de la série ISO/IEC 14908
Ta slovenski standard je istoveten z: EN IEC 62056-8-8:2020
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
35.240.50 Uporabniške rešitve IT v IT applications in industry
industriji
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
SIST EN IEC 62056-8-8:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62056-8-8:2020
---------------------- Page: 2 ----------------------
SIST EN IEC 62056-8-8:2020
EUROPEAN STANDARD EN IEC 62056-8-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 17.220; 35.110; 91.140.50
English Version
Electricity metering data exchange - The DLMS/COSEM suite -
Part 8-8: Communication profile for ISO/IEC 14908 series
networks
(IEC 62056-8-8:2020)

Échange des données de comptage de l'électricité - La Datenkommunikation der elektrischen Energiemessung -

suite DLMS/COSEM - Partie 8-8: Profil de communication DLMS/COSEM - Teil 8-8: Kommunikationsprofil für

pour réseaux de la série ISO/IEC 14908 Netzwerke der Reihe ISO/IEC 14908
(IEC 62056-8-8:2020) (IEC 62056-8-8:2020)

This European Standard was approved by CENELEC on 2020-06-02. 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,

Turkey 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

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 62056-8-8:2020 E
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SIST EN IEC 62056-8-8:2020
EN IEC 62056-8-8:2020 (E)
European foreword

The text of document 13/1783/CDV, future edition 1 of IEC 62056-8-8, 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 62056-8-8:2020.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-03-02

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-06-02

document have to be withdrawn

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.

Endorsement notice

The text of the International Standard IEC 62056-8-8:2020 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:

IEC 62056-1-0 NOTE Harmonized as EN 62056-1-0
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SIST EN IEC 62056-8-8:2020
EN IEC 62056-8-8:2020 (E)
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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 62056-5-3 2017 Electricity metering data exchange - The EN 62056-5-3 2017
DLMS/COSEM suite - Part 5-3:
DLMS/COSEM application layer
IEC 62056-6-1 2017 Electricity metering data exchange - The EN 62056-6-1 2017
DLMS/COSEM suite - Part 6-1: Object
Identification System (OBIS)

IEC 62056-6-2 2017 Electricity metering data exchange - The EN IEC 62056-6-2 2018

DLMS/COSEM suite - Part 6-2: COSEM
interface classes
ISO/IEC 14908-1 2012 Information technology - Control network - -
protocol - Part 1: Protocol stack
ISO/IEC 14908-3 2012 Information technology - Control network - -
protocol - Part 3: Power line channel
specification
- - Signalling on low-voltage electrical EN 50065-1 -
installations in the frequency range 3 kHz
to 148,5 kHz – Part 1: General
requirements, frequency bands and
electromagnetic disturbances
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SIST EN IEC 62056-8-8:2020
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SIST EN IEC 62056-8-8:2020
IEC 62056-8-8
Edition 1.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electricity metering data exchange – The DLMS/COSEM suite –
Part 8-8: Communication profile for ISO/IEC 14908 series networks
Échange des données de comptage de l'électricité – La suite DLMS/COSEM –
Partie 8-8: Profil de communication pour réseaux de la série ISO/IEC 14908
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220; 35.110; 91.140.50 ISBN 978-2-8322-8082-9

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 IEC 62056-8-8:2020
– 2 – IEC 62056-8-8:2020  IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 7

INTRODUCTION ..................................................................................................................... 9

1 Scope ............................................................................................................................ 10

2 Normative references .................................................................................................... 10

3 Terms, definitions and abbreviated terms ...................................................................... 11

3.1 Terms and definitions ............................................................................................ 11

3.2 Abbreviated terms ................................................................................................. 12

4 Targeted communication environments .......................................................................... 13

5 Use of the communication layers for this profile ............................................................. 13

5.1 Information related to the use of the standard specifying the lower layers ............. 13

5.2 The structure of the communication profile ............................................................ 14

5.3 Lower layers and their use .................................................................................... 14

5.3.1 Overview ....................................................................................................... 14

5.3.2 Physical layer ................................................................................................ 15

5.3.3 Data link layer ............................................................................................... 15

5.3.4 Network layer ................................................................................................ 15

5.3.5 Transport layer .............................................................................................. 15

5.4 Service mapping and Adaptation layer .................................................................. 16

5.4.1 Overview ....................................................................................................... 16

5.4.2 Adaptation layer ............................................................................................ 16

5.5 Registration and connection management ............................................................. 27

6 Identification and addressing schemes .......................................................................... 27

7 Specific considerations for the application layer services ............................................... 28

7.1 Overview............................................................................................................... 28

7.2 Application Association establishment and release: ACSE services ...................... 28

7.2.1 Application association establishment ............................................................ 28

7.2.2 Application association release ...................................................................... 29

7.2.3 COSEM-OPEN and COSEM-RELEASE service parameters ........................... 29

7.3 xDLMS services .................................................................................................... 30

7.4 Security mechanisms ............................................................................................ 30

7.4.1 DLMS/COSEM security .................................................................................. 30

7.4.2 Adaptation layer security ............................................................................... 30

7.4.3 Lower layers security ..................................................................................... 30

7.5 Transferring long application messages ................................................................ 30

7.6 Media access, bandwidth and timing considerations ............................................. 30

7.7 Other considerations ............................................................................................. 30

8 Communication configuration and management ............................................................. 31

9 The COSEM Application Process ................................................................................... 31

10 Additional considerations for the use of this profile ........................................................ 31

Annex A (informative) Examples .......................................................................................... 32

Annex B (normative) Interface classes ................................................................................. 33

B.1 Interface classes ................................................................................................... 33

B.1.1 ISO/IEC 14908 Identification .......................................................................... 33

B.1.2 ISO/IEC 14908 Protocol setup ....................................................................... 33

B.1.3 ISO/IEC 14908 Protocol status ...................................................................... 34

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B.1.4 ISO/IEC 14908 Diagnostic ............................................................................. 35

B.2 Relation to OBIS ................................................................................................... 37

Annex C (informative) Implementation guide and migration path .......................................... 38

C.1 General ................................................................................................................. 38

C.2 Client-server model ............................................................................................... 38

C.2.1 General ......................................................................................................... 38

C.2.2 Clients ........................................................................................................... 38

C.2.3 Servers .......................................................................................................... 39

C.2.4 Application associations ................................................................................ 39

C.3 The COSEM objects.............................................................................................. 40

C.3.1 COSEM object model..................................................................................... 40

C.3.2 Referencing methods ..................................................................................... 41

C.3.3 The object_list ............................................................................................... 42

C.3.4 Mandatory COSEM objects ............................................................................ 42

C.3.5 Application specific objects ............................................................................ 42

C.3.6 Utility table objects ........................................................................................ 42

Annex D (informative) OSGP-AES-128-PSK security suite ................................................... 46

D.1 General ................................................................................................................. 46

D.2 Background........................................................................................................... 47

D.2.1 Overview ....................................................................................................... 47

D.2.2 System Assumptions ..................................................................................... 47

D.2.3 Threat Model ................................................................................................. 47

D.2.4 Design goals .................................................................................................. 48

D.2.5 Inspiration ..................................................................................................... 48

D.3 Terms and definition, abbreviated terms and notation ........................................... 48

D.3.1 Terms and definitions .................................................................................... 48

D.3.2 Abbreviated terms ......................................................................................... 50

D.3.3 Notation ......................................................................................................... 50

D.3.4 Other conventions ......................................................................................... 50

D.4 Cryptographic Primitives ....................................................................................... 51

D.4.1 General ......................................................................................................... 51

D.4.2 CMAC ............................................................................................................ 51

D.4.3 CCM .............................................................................................................. 51

D.5 Cryptographic Functions ....................................................................................... 52

D.5.1 Overview ....................................................................................................... 52

D.5.2 OSGP_KDF: Key Derivation Function ............................................................ 52

D.5.3 OSGP_MAC: Message Authentication Code Function .................................... 52

D.5.4 OSGP_MAC_VERIFY: Message Authentication Code Verification

Function ........................................................................................................ 53

D.5.5 OSGP_AE/OSGP_AD: Authenticated Encryption/Decryption Function ........... 53

D.5.6 OSGP_CSPRNG: Cryptographically Secure Pseudo Random Number

Generator ...................................................................................................... 55

D.6 Keys ..................................................................................................................... 56

D.7 Secure channel initialization ................................................................................. 58

D.7.1 Overview ....................................................................................................... 58

D.7.2 Secure Channel State (CryptoContext) .......................................................... 58

D.7.3 Flow .............................................................................................................. 58

D.7.4 Security Suite Negotiation ............................................................................. 63

D.7.5 LNAP Commissioning .................................................................................... 64

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SIST EN IEC 62056-8-8:2020
– 4 – IEC 62056-8-8:2020  IEC 2020

D.7.6 Error Handling and Intrusion Detection .......................................................... 64

D.7.7 Messages ...................................................................................................... 64

D.8 Secure Channel Communication ........................................................................... 67

D.8.1 General ......................................................................................................... 67

D.8.2 The General Process ..................................................................................... 68

D.8.3 Unicast communication .................................................................................. 69

D.8.4 Broadcast Communication ............................................................................. 73

D.9 Firmware Downloading .......................................................................................... 75

D.10 Key Management .................................................................................................. 76

D.10.1 Renewing the Short-term, Meter-unique Keys ................................................ 76

D.10.2 Renewing the Short-term, Domain-unique Keys ............................................. 76

D.10.3 UpdateDomainKeysRequest .......................................................................... 77

D.10.4 UpdateDomainKeysResponse ........................................................................ 77

D.11 Updating the Long-term, Meter-unique Keys ......................................................... 77

D.11.1 General ......................................................................................................... 77

D.11.2 Key Validity Periods ....................................................................................... 78

D.12 Error Messages .................................................................................................... 78

D.12.1 Overview ....................................................................................................... 78

D.12.2 AuthenticationFailure ..................................................................................... 78

D.12.3 SequenceError .............................................................................................. 78

D.13 Security considerations ......................................................................................... 78

D.13.1 Reasoning ..................................................................................................... 78

D.13.2 Recommendation and Guidance for Implementers ......................................... 81

Annex E (normative) Repeating mechanism ......................................................................... 83

E.1 Overview............................................................................................................... 83

E.2 Terms and definitions ............................................................................................ 83

E.3 Protocol specification ............................................................................................ 84

E.3.1 Overview ....................................................................................................... 84

E.3.2 Addressing .................................................................................................... 84

E.3.3 Service types ................................................................................................. 84

E.3.4 Timers ........................................................................................................... 84

E.3.5 Request flow .................................................................................................. 85

E.3.6 Response flow ............................................................................................... 85

E.3.7 Authentication................................................................................................ 85

E.3.8 Examples....................................................................................................... 86

E.3.9 Broadcast ...................................................................................................... 87

E.4 Downlink frame format .......................................................................................... 87

E.4.1 Overview ....................................................................................................... 87

E.4.2 Proxy parameters of request frame ............................................................... 88

E.5 Uplink Frame format ............................................................................................. 92

E.5.1 Overview ....................................................................................................... 92

E.5.2 Proxy success ............................................................................................... 92

E.5.3 Repeating Failure .......................................................................................... 93

E.5.4 Authentication failure ..................................................................................... 93

Annex F (informative) ISO/IEC 14908-3 Registration and monitoring of LNAPs .................... 94

F.1 Scope ................................................................................................................... 94

F.2 Terms and definitions ............................................................................................ 94

F.3 Metering device lifecycle ....................................................................................... 94

F.4 ATM Protocol ........................................................................................................ 95

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SIST EN IEC 62056-8-8:2020
IEC 62056-8-8:2020  IEC 2020 – 5 –

F.4.1 General ......................................................................................................... 95

F.4.2 ATM roles ...................................................................................................... 95

F.4.3 Automatic discovery....................................................................................... 95

F.4.4 Discovery domain .......................................................................................... 96

F.4.5 ATM messages .............................................................................................. 96

F.5 Commissioning ................................................................................................... 100

F.5.1 Overview ..................................................................................................... 100

F.5.2 Commissioning operations ........................................................................... 100

Bibliography ........................................................................................................................ 101

Figure 1 – Functional reference architecture ......................................................................... 13

Figure 2 – Structure of the communication profile ................................................................. 14

Figure 3 – Adaptation layer structure .................................................................................... 17

Figure 4 – Unprotected Adaptation layer PDU structure ........................................................ 18

Figure 5 – Protected Adaptation layer PDU structure ............................................................ 19

Figure 6 – Adaptation layer services ..................................................................................... 20

Figure 7 – Client and server ADP_DATA services ................................................................. 24

Figure D.1 – Key hierarchy diagram ...................................................................................... 56

Figure D.2 – Secure channel establishment .......................................................................... 59

Figure D.3 – Challenge request ............................................................................................ 60

Figure D.4 – Challenge response .......................................................................................... 60

Figure D.5 – Commission Request ........................................................................................ 61

Figure D.6 – Commission response ...................................................................................... 62

Figure D.7 – Crypto context establishment ............................................................................ 67

Figure D.8 – Authenticate encryption mechanism .................................................................. 68

Figure D.9 – Authenticated decryption .................................................................................. 69

Figure E.1 – Unacknowledged message exchange ................................................................ 86

Figure E.2 – Request / Response message ........................................................................... 86

Figure E.3 – Error during request transmission ..................................................................... 86

Figure E.4 – Error during response transmission ................................................................... 87

Figure E.5 – Proxy Repeater proxy message ........................................................................ 87

Figure E.6 – Proxy Agent proxy message format ................................................................... 87

Figure E.7 – Proxy Target message format ........................................................................... 88

Figure E.8 – Normal ProxyTrailer .......................................................................................... 90

Figure E.9 – Alternate Key Proxy Trailer ............................................................................... 90

Figure E.10 – Proxy SICB field structure ............................................................................... 90

Figure E.11 – Alternate Key format ....................................................................................... 91

Figure E.12 – ProxySubnetNode Address (Type1) ................................................................ 92

Figure E.13 – ProxyUniqueNode_ID Address (Type 2) .......................................................... 92

Figure E.14 – ProxyBroadcast Address (Type 3) ................................................................... 92

Figure E.15 – ProxySubnetNode Compact Address (Type 5 and 7) ....................................... 92

Figure E.16 – ProxyUniqueNodeCompact Address (Type 6) .................................................. 92

Table 1 – Control field........................................................................................................... 18

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SIST EN IEC 62056-8-8:2020
– 6 – IEC 62056-8-8:2020
...

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