Communication systems for meters - Part 1: Data exchange

This document specifies data exchange and communications for meters in a generic way.
This document establishes a protocol specification for the Application Layer for meters and establishes several protocols for meter communications which can be applied depending on the application being fulfilled.
This document also specifies the overall structure of the OBject Identification System (OBIS) and the mapping of all commonly used data items in metering equipment to their identification codes.”
NOTE   Electricity meters are not covered by this document, as the standardization of remote readout of electricity meters is a task for CENELEC/IEC.

Kommunikationssysteme für Zähler - Teil 1: Datenaustausch

Dieses Dokument legt den Datenaustausch und die Kommunikation für Zähler in allgemeiner Weise fest.
Es gibt außerdem eine Protokollspezifikation für die Anwendungsschicht für Zähler und verschiedene Protokolle für die Zählerkommunikation an, die in Abhängigkeit von der auszuführenden Anwendung angewendet werden können.
Darüber hinaus wird in diesem Dokument die allgemeine Struktur des Objektidentifikationssystems OBIS und die Zuordnung aller allgemein in Messsystemen verwendeten Datenobjekte zu ihren Identifizierungs-Codes.
ANMERKUNG   Elektrizitätszähler werden von diesem Dokument nicht abgedeckt, da die Normung für die Fernablesung von Elektrizitätszählern CENELEC/IEC obliegt.

Systèmes de communication pour compteurs - Partie 1 : Échange de données

Le présent document explique l’échange de données et les communications relatifs aux compteurs, de manière générale.
Il établit une spécification de protocole pour la couche application des compteurs ainsi que plusieurs protocoles pour les communications des compteurs qui peuvent être appliqués selon l’application en cours de réalisation.
Il précise également la structure générale du système d’identification d’objet (OBIS) et l’organisation des données couramment utilisées dans les équipements de comptage en fonction de leurs codes d’identification.
NOTE   Les compteurs d’énergie électrique ne sont pas concernés par le présent document, car la normalisation du télérelevé des compteurs d’énergie électrique est assurée par le CENELEC/l'IEC.

Komunikacijski sistemi za merilnike - 1. del: Izmenjava podatkov

General Information

Status
Published
Public Enquiry End Date
31-Jul-2020
Publication Date
12-Dec-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
08-Dec-2021
Due Date
12-Feb-2022
Completion Date
13-Dec-2021

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 13757-1:2022
01-februar-2022
Nadomešča:
SIST EN 13757-1:2015
Komunikacijski sistemi za merilnike - 1. del: Izmenjava podatkov
Communication systems for meters - Part 1: Data exchange
Kommunikationssysteme für Zähler - Teil 1: Datenaustausch
Systèmes de communication pour compteurs - Partie 1 : Échange de données
Ta slovenski standard je istoveten z: EN 13757-1:2021
ICS:
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
35.100.70 Uporabniški sloj Application layer
SIST EN 13757-1:2022 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN 13757-1:2022
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SIST EN 13757-1:2022
EN 13757-1
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2021
EUROPÄISCHE NORM
ICS 33.200; 35.100.70; 35.240.99; 91.140.50 Supersedes EN 13757-1:2014
English Version
Communication systems for meters - Part 1: Data exchange

Systèmes de communication pour compteurs - Partie 1 Kommunikationssysteme für Zähler - Teil 1:

: Échange de données Datenaustausch
This European Standard was approved by CEN on 16 August 2021.

CEN 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 CEN

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 CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13757-1:2021 E

worldwide for CEN national Members.
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SIST EN 13757-1:2022
EN 13757-1:2021 (E)
Contents Page

European foreword ...................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 6

1 Scope .................................................................................................................................................................... 7

2 Normative references .................................................................................................................................... 7

3 Terms and definitions ................................................................................................................................... 8

4 General description and security ............................................................................................................ 10

4.1 Basic vocabulary ........................................................................................................................................... 10

4.2 Layered protocols ......................................................................................................................................... 10

4.3 Security ............................................................................................................................................................. 13

5 Network Architecture .................................................................................................................................. 17

5.1 M/441 Mandate ............................................................................................................................................. 17

5.2 General.............................................................................................................................................................. 18

5.3 Basic architecture ......................................................................................................................................... 18

5.4 Metering Architecture ................................................................................................................................. 19

5.5 Singular access point ................................................................................................................................... 21

5.6 Self-configurable network ......................................................................................................................... 21

5.7 Hand Held Unit for local access ................................................................................................................ 21

5.8 Network layers ............................................................................................................................................... 21

5.9 Multiple access ............................................................................................................................................... 21

6 Application Layers for Metering .............................................................................................................. 22

6.1 General.............................................................................................................................................................. 22

6.2 COSEM Application Layer for Metering ................................................................................................. 22

6.3 Companion Specification ............................................................................................................................ 22

6.4 COSEM Basic Principles .............................................................................................................................. 23

6.5 Management of a COSEM Device .............................................................................................................. 24

6.6 Lower layers ................................................................................................................................................... 25

7 Data Exchange ................................................................................................................................................ 26

7.1 General.............................................................................................................................................................. 26

7.2 Data exchange using direct local connection ...................................................................................... 26

7.3 Data exchange using wired local area network (LAN) .................................................................... 27

7.4 Data exchange using wide area network (WAN) ............................................................................... 28

7.5 Data exchange using M-Bus radio communication ........................................................................... 34

7.6 Data Exchange using HDLC ........................................................................................................................ 34

8 Upper Layer Protocols ................................................................................................................................ 35

8.1 Introduction .................................................................................................................................................... 35

8.2 Transport sub-layer ..................................................................................................................................... 35

8.3 Application sub-layer .................................................................................................................................. 38

9 Cross-application data handling.............................................................................................................. 39

9.1 General.............................................................................................................................................................. 39

9.2 Data tunnelling .............................................................................................................................................. 40

9.3 Data translation ............................................................................................................................................. 42

10 Extensions to COSEM ................................................................................................................................... 42

10.1 Introduction .................................................................................................................................................... 42

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SIST EN 13757-1:2022
EN 13757-1:2021 (E)

10.2 M-Bus tunnelling ........................................................................................................................................... 42

10.3 Specific object type – Error Reporting Object .................................................................................... 43

11 Object Identification System (OBIS) ...................................................................................................... 44

11.1 Object Identification System (Variable naming rules) .................................................................... 44

11.2 Abstract Objects (A = 0) .............................................................................................................................. 48

11.3 Media specific value groups ...................................................................................................................... 49

Annex A (normative) Basic class meters ........................................................................................................... 99

Annex B (informative) DLMS Glossary ............................................................................................................ 102

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SIST EN 13757-1:2022
EN 13757-1:2021 (E)
European foreword

This document (EN 13757-1:2021) has been prepared by Technical Committee CEN/TC 294

“Communication systems for meters”, the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by June 2022, and conflicting national standards shall be

withdrawn at the latest by June 2022.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 13757-1:2014.
Significant technical changes between this document and EN 13757-1:2014 are:
• The text has been updated to reflect increased use of IPv6 in 4.2.3;
• Figure 4 has been replaced with Table 3;
• Key wrapping has been added in 4.3.3.1;

• A description of pre-established Application Associations has been added in 4.3.4;

• Figure 11 has been replaced with a table and enhanced;
• A reference to GSM CSD has been added in 7.4.2;
• A security clause has been added in 7.5.4;

• 8.2.1 has been updated in line with 8.2.2 and 8.2.3, and now references EN 62056-4-7;

• Previous subclause 9.2.2.3 has been removed;
• New content has been added in 9.3 to align with EN 13757-3:2018, Annex H;

• Interface classes now refer to EN IEC 62056-6-1 and EN IEC 62056-6-2 to remove duplication;

• Clause 11 has had minor updates and been aligned with DLMS/COSEM object model;
• Mandatory COSEM Objects have been added in A.2;
• Annex B has been updated in line with EN 62056-6-1 and EN 62056-6-2;
• Annex D now references EN62056-6-1;
• The bibliography has been updated.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.
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SIST EN 13757-1:2022
EN 13757-1:2021 (E)

The OBIS and COSEM Clause 6 to Clause 11 of this document are prepared in liaison with the DLMS User

Association based in Zug, Switzerland, and more information about DLMS/COSEM can be obtained from

www.dlms.com.

Any feedback and questions on this document should be directed to the users’ national standards body.

A complete listing of these bodies can be found on the CEN website.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
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SIST EN 13757-1:2022
EN 13757-1:2021 (E)
Introduction

This document is referred to in the CEN/CLC/ETSI TR 50572:2011, Functional Reference Architecture

for Communications in Smart Metering Systems, as a standard for communications between elements in

the Smart Metering Architecture. The M/441 Mandate, which led to the CEN/CLC/ETSI TR 50572, is

driving significant development of standards in smart metering.

This document has been amended to reflect significant updates in Security practices, and updates to the

OBIS model to reflect the state of the art. COSEM Classes have been removed from this document, as

they are published in the EN IEC 62056-6-2 standard and there is a risk of contradiction.

For an overview of activities, see M/490, the mandate for standardization for smart grid, available from

https://ec.europa.eu/energy/sites/ener/files/documents/2011_03_01_mandate_m490_en.pdf, and

more generally https://ec.europa.eu/energy/en/topics/markets-and-consumers/smart-grids-and-

meters/smart-grids-task-force.

This document describes the data exchange and communications for meters and remote reading of

meters in a generic way. It is Part 1 of EN 13757.

The main use of EN 13757-1 is to provide an overview of the protocols at the different levels and to

provide a specification for the DLMS/COSEM application Layer for meters.
Additional parts to the series of standard EN 13757 are:
— Part 2: Wired M-Bus communication;
— Part 3: Application protocols;
— Part 4: Wireless M-Bus communication;
— Part 5: Wireless M-Bus relaying;
— Part 6: Local Bus;
— Part 7: Transport and security services.

The world of metering is going through a period of rapid change, and it is anticipated that this and other

parts of the standard will require amending in a short period of time.

NOTE 1 This document makes repeated reference to EN 62056 standards. While the list of references is helpful,

an essential companion to this document is the EN IEC 62056-6-2 standard.

NOTE 2 Some of the ISO/IEC documents listed under Clause 2 could be available only from ISO or IEC directly.

If the document you require is not available from your national standards organization, ISO or IEC can be

contacted to establish the status of the document and its availability. ISO can be contacted via www.iso.org.

NOTE 3 Clause 3 contains the terms and definitions special to remote reading of meters. Annex B is used to

explain terms related to the object oriented model used in COSEM, detailed in EN IEC 62056-6-2 and OBIS,

detailed in EN 62056-6-1.
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SIST EN 13757-1:2022
EN 13757-1:2021 (E)
1 Scope

This document specifies data exchange and communications for meters in a generic way.

This document establishes a protocol specification for the Application Layer for meters and establishes

several protocols for meter communications which can be applied depending on the application being

fulfilled.

This document also specifies the overall structure of the Object Identification System (OBIS) and the

mapping of all commonly used data items in metering equipment to their identification codes.

NOTE Electricity meters are not covered by this document, as the standardization of remote readout of

electricity meters is a task for CENELEC/IEC.
2 Normative references

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.

EN 13757-2:2018, Communication systems for meters - Part 2: Wired M-Bus communication

EN 13757-3:2018, Communication systems for meters - Part 3: Application protocols

EN 13757-4:2019, Communication systems for meters - Part 4: Wireless M-Bus communication

EN 13757-5:2015, Communication systems for meters - Part 5: Wireless M-Bus relaying

EN 13757-6, Communication systems for meters - Part 6: Local Bus

EN 13757-7:2018, Communication systems for meters - Part 7: Transport and security services

EN 60870-5-2, Telecontrol equipment and systems - Part 5: Transmission protocols - Section 2: Link

transmission procedures (IEC 60870-5-2)

EN 62056-3-1, Electricity metering data exchange - The DLMS/COSEM suite - Part 3-1: Use of local area

networks on twisted pair with carrier signalling (IEC 62056-3-1)

EN 62056-4-7:2016, Electricity metering data exchange - The DLMS/COSEM suite - Part 4-7:

DLMS/COSEM transport layer for IP networks (IEC 62056-4-7)

EN 62056-5-3, Electricity metering data exchange - The DLMS/COSEM suite - Part 5-3: DLMS/COSEM

application layer (IEC 62056-5-3)

EN 62056-6-1:2017, Electricity metering data exchange - The DLMS/COSEM suite - Part 6-1: Object

Identification System (OBIS) (IEC 62056-6-1:2017)

EN 62056-6-2:2018, Electricity metering data exchange - The DLMS/COSEM suite - Part 6-2: COSEM

interface classes (IEC 62056-6-2:2017)

EN 62056-9-7, Electricity metering data exchange - The DLMS/COSEM suite - Part 9-7: Communication

profile for TCP-UDP/IP networks (IEC 62056-9-7)
1) The EN 62056 series of standards are in the process of revision/renumbering.
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SIST EN 13757-1:2022
EN 13757-1:2021 (E)

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

21: Direct local data exchange (IEC 62056-21:2002)

EN 62056-42, 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-

42)

EN 62056-46:2002, Electricity metering - Data exchange for meter reading, tariff and load control - Part

46: Data link layer using HDLC protocol (IEC 62056-46:2002)
ITU-T V.250, Serial asynchronous automatic dialling and control
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
authorized party

utility, energy retailer, network operator, meter operator or data collection company authorized to

access the information stored in the meter that is accessible to them according to the application

association they can use
3.2
base conditions

fixed conditions used to express the volume of gas independently of the measurement conditions

EXAMPLE: temperature of 273,15 K and absolute pressure of 1,013 25 bar or temperature of 288,15 K and

absolute pressure of 1,013 25 bar
3.3
billing period
period over which a consumer bill is calculated
Note 1 to entry: See also B.7.
3.4
calendar
mechanism to program changes to active registers for Time-of-Use Tariffs
Note 1 to entry: See Activity Calendar B.3.
3.5
concentrator

intelligent station in a hierarchical communications network where incoming data (generated by

multiple meters) is processed as appropriate and then repackaged, relayed, retransmitted, discarded,

responded to, consolidated, prioritized and/or increased to multiple messages
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SIST EN 13757-1:2022
EN 13757-1:2021 (E)
3.6
disturbance

influence quantity having a value within the limits specified, but outside the specified rated operating

conditions of the measurement instrument
3.7
gas-volume conversion device

device that computes, integrates and indicates the volume increments measured by a gas meter as if it

were operating at base conditions, using as inputs the volume at measurement conditions as measured

by the gas meter, and other characteristics such as gas temperature and gas pressure

Note 1 to entry: The conversion device can also include the error curve of the gas meter and associated

measuring transformers.

Note 2 to entry: The deviation from the ideal gas law can be compensated by the compressibility factor.

3.8
hand held terminal

portable device for reading and programming metering equipment at the customer’s premises or at the

access point
3.9
index

current reading of the total volume (mass) passed through the meter

3.10
index difference

difference between the index at the end of a measurement or billing period

and the index at the start of the same measurement or billing period

Note 1 to entry: Index difference over a certain measurement or billing period is also known as consumption. For

consumption, thresholds can be specified.
3.11
IPsec
end-to-end security scheme operating in the Internet Layer
Note 1 to entry: It works on IPv4 and IPv6 Networks.
Note 2 to entry: It is described in IETF RFC 4301.
3.12
measurement conditions
conditions of the gas whose volume is measured, at the point of measurement
EXAMPLE: the temperature and the pressure of the gas
3.13
scaler
exponent (to the base of 10) of the multiplication factor

Note 1 to entry: If the value is not numerical, then the scaler will be set to 0.

Note 2 to entry: See also B.49
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SIST EN 13757-1:2022
EN 13757-1:2021 (E)
3.14
specified measuring range

set of values of measurements (the pressure for the pressure transducer or temperature for the

temperature transducer) for which the error of the conversion device is intended to lie within the limits

specified in the standard

Note 1 to entry: The upper and lower limits of the specified measuring range are called maximum value and

minimum value respectively.
3.15
specified field of measurement of a conversion device

set of values at measurement conditions for which the error of the conversion device is within specified

limits

Note 1 to entry: A conversion device has a measuring range for every quantity that it processes.

Note 2 to entry: The specified field of measurement applies to the characteristic quantities of the gas that are

used to determine the conversion factor.
3.16
unit
enumeration defining the physical unit
Note to entry: See also B.69.
4 General description and security
4.1 Basic vocabulary

All communications involve two sets of equipment represented by the terms Caller system and Called

system. The Caller is the system that decides to initiate a communication with a remote system known

as the Called party; these denominations remain valid throughout the duration of the communication.

A communication is broken down into a certain number of transactions. Each transaction is represented

by a transmission from the Transmitter to the Receiver. During the sequence of transactions, the

Caller and Called systems take turns to act as Transmitter and Receiver.

The terms Client and Server have the same meanings as in the DLMS model EN 61334-4-41. The

Server is the system (meter) that acts as a receiver for service requests. The Client is the system

(usually a data collecting system) that uses the Server for a specific purpose by means of one or more

service requests.

The situation involving a Caller Client and a Called Server is undoubtedly the most frequent case, but

a communication based on a Caller Server and a Called Client is also possible, in particular to report

the occurrence of an urgent alarm and can offer savings in terms of data volumes in mass metering

applications.

While the terms Caller and Called can imply a session, sessionless communications using, for example

UDP over IP, are also a valid approach to communications for smart meters depending on the type of

network.
4.2 Layered protocols
4.2.1 General

The purpose of this subclause is to explain, in a summarized way, the layered approaches and to explain

the development since the initial issue of this document.
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SIST EN 13757-1:2022
EN 13757-1:2021 (E)

In order to perform automatic reading of meters, this document assumes a protocol stack approach. A

protocol stack is divided into layers in order to reduce the complexity of the communicating system.

Each layer provides services to the layer above on the basis of the layer below.
4.2.2 7 Layer Protocol

The architecture of data communication in this document is modelled using the ISO – OSI 7-layer

reference model ISO/IEC 7498-1. The model is shown in Figure 1.
Key
A physical media 4 transport
B relay entity 5 session
1 physical 6 presentation
2 data link 7 application
3 network
Figure 1 — The OSI 7-layer model

All layers have a corresponding layer at the other end of the communications link. The three upper

layers are application related. The three lower layers are communications related. The Transport Layer

creates the link between them. There may be multiple instances of the three lower layers if a relay is

inserted between the communicating partners.

It shall be kept in mind that this is a model and not an implementation guide, i.e. not all

implementations follow this model. An example of this is the Internet series of standards. They follow

the model for the four lower layers, but do not specify the application related part as independent

layers. Layers not necessary and thus not implemented in a specific protocol may be handled as null

layers.
4.2.3 IP Protocol

IPv4 and IPv6 are widely used protocols for transport of all kinds of data, including metering data. Its

principal advantages are that it can be used to carry a wide variety of applications over a wide range of

communications media.
---------------------- Page: 13 ----------------------
SIST EN 13757-1:2022
EN 13757-1:2021 (E)
Table 1 — Connection method independent Application Layers
Application Common, method
Layer independent layer
TCP/UDP IP Wrapper
Transport UDP TCP
Network IP
Data Link Any Any
Physical Any Any

The architecture shown in Table 1 allows for multiple different communications media, while at the

same time keeping a common connection method independent Application Layer. This is important as

different connection methods are suited for different operating environments. The use of common

layers lowers the overall cost and complexity of a remote readout metering system.

Users of the TCP/IP or UDP/IP protocol shall follow the standard EN 62056-4-7.
4.2.4 3 Layer Protocol

A very common model for simple meter readout without any relays is a collapsed three layer model as

depicted in Table 2.

This is the IEC 3-layer model EN 61334-4-1, which is derived from OSI 7-layer model documented in

ISO/IEC 7498-1.
The three layers of the IEC model are shown in Table 2.
Table 2 — IEC 3-layer model
Layer 7 Application
Layer 2 Data link
Layer 1 Physical
NOTE 1 The layer numbers refers to the numbering in the ISO-OSI 7_layer model.

This model ensures that the original concept of a model where the Application Layer is independent of

communication transport method used, is maintained.

This division makes it possible to achieve an Application Layer that is independent of the

communication connection method used, and the possibility of using the same communication method

transport mechanism for different Application Layers. An example of this is shown in Table 3. The

Physical Layer and in some cases the Data Link Layer are closely related and highly dependent on the

Layers 1 and 2 depend on the connection method used (Optical interface, Power Line Carrier-Low

Voltage (PLC – LV), Public Switched Telephone Network (PSTN), VHF/UHF radio, Twisted Pair cable

(TP)). This document requires Application Layers that are independent of the connection method used.

---------------------- Page: 14 -------------------
...

SLOVENSKI STANDARD
oSIST prEN 13757-1:2020
01-julij-2020
Komunikacijski sistemi za merilnike - 1. del: Izmenjava podatkov
Communication systems for meters - Part 1: Data exchange
Kommunikationssysteme für Zähler - Teil 1: Datenaustausch
Systèmes de communication pour compteurs - Partie 1 : Échange de données
Ta slovenski standard je istoveten z: prEN 13757-1
ICS:
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
35.100.70 Uporabniški sloj Application layer
oSIST prEN 13757-1:2020 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN 13757-1:2020
---------------------- Page: 2 ----------------------
oSIST prEN 13757-1:2020
DRAFT
EUROPEAN STANDARD
prEN 13757-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 33.200; 35.100.70; 35.240.99; 91.140.50 Will supersede EN 13757-1:2014
English Version
Communication systems for meters - Part 1: Data exchange

Systèmes de communication pour compteurs - Partie 1 Kommunikationssysteme für Zähler - Teil 1:

: Échange de données Datenaustausch

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 294.

If this draft becomes a European Standard, CEN 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.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC

Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13757-1:2020 E

worldwide for CEN national Members.
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oSIST prEN 13757-1:2020
prEN 13757-1:2020 (E)
Contents Page

European foreword ...................................................................................................................................................... 7

Introduction .................................................................................................................................................................... 8

1 Scope .................................................................................................................................................................... 9

2 Normative references .................................................................................................................................... 9

3 Terms and definitions ................................................................................................................................. 10

4 General description and security ............................................................................................................ 12

4.1 Basic vocabulary ........................................................................................................................................... 12

4.2 Layered protocols ......................................................................................................................................... 12

4.2.1 General.............................................................................................................................................................. 12

4.2.2 7 Layer Protocol ............................................................................................................................................ 13

4.2.3 IP Protocol ....................................................................................................................................................... 13

4.2.4 3 Layer Protocol ............................................................................................................................................ 14

4.3 Security ............................................................................................................................................................. 15

4.3.1 General.............................................................................................................................................................. 15

4.3.2 Security Requirement Analysis/Threat Analysis .............................................................................. 16

4.3.3 Key Management ........................................................................................................................................... 16

4.3.4 COSEM Application Layer Security ......................................................................................................... 18

4.3.5 Transport Layer Security ........................................................................................................................... 18

5 Network Architecture .................................................................................................................................. 19

5.1 M/441 Mandate ............................................................................................................................................. 19

5.2 General.............................................................................................................................................................. 19

5.3 Basic architecture ......................................................................................................................................... 20

5.4 Metering Architecture ................................................................................................................................. 21

5.5 Singular access point ................................................................................................................................... 22

5.6 Self-configurable network ......................................................................................................................... 22

5.7 Hand Held Unit for local access ................................................................................................................ 22

5.8 Network layers ............................................................................................................................................... 23

5.9 Multiple access ............................................................................................................................................... 23

6 Application Layers for Metering .............................................................................................................. 23

6.1 General.............................................................................................................................................................. 23

6.2 COSEM Application Layer for Metering ................................................................................................. 23

6.3 Companion Specification ............................................................................................................................ 24

6.4 COSEM Basic Principles .............................................................................................................................. 24

6.5 Management of a COSEM Device .............................................................................................................. 25

6.6 Lower layers ................................................................................................................................................... 26

7 Data Exchange ................................................................................................................................................ 27

7.1 General.............................................................................................................................................................. 27

7.2 Data exchange using direct local connection ...................................................................................... 27

7.2.1 General.............................................................................................................................................................. 27

7.2.2 Security ............................................................................................................................................................. 27

7.2.3 Physical layer ................................................................................................................................................. 27

7.2.4 Link Layer ........................................................................................................................................................ 28

7.3 Data exchange using wired local area network (LAN) .................................................................... 28

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7.3.1 General ............................................................................................................................................................. 28

7.3.2 Twisted pair, baseband signalling .......................................................................................................... 28

7.3.3 Twisted pair, baseband limited systems .............................................................................................. 29

7.3.4 Twisted pair, carrier signalling ............................................................................................................... 29

7.4 Data exchange using wide area network (WAN) ............................................................................... 29

7.4.1 General ............................................................................................................................................................. 29

7.4.2 PSTN/GSM CSD based connection ........................................................................................................... 29

7.4.3 IP connection .................................................................................................................................................. 33

7.5 Data exchange using M-Bus radio communication .......................................................................... 35

7.5.1 General ............................................................................................................................................................. 35

7.5.2 Basic M-Bus radio networks ..................................................................................................................... 35

7.5.3 Routed M-Bus radio networks ................................................................................................................. 35

7.5.4 Security over M-Bus radio networks ..................................................................................................... 35

7.6 Data Exchange using HDLC ........................................................................................................................ 35

7.6.1 General ............................................................................................................................................................. 35

7.6.2 Security ............................................................................................................................................................. 35

7.6.3 Physical layer ................................................................................................................................................. 36

7.6.4 Link Layer ........................................................................................................................................................ 36

8 Upper Layer Protocols ................................................................................................................................ 36

8.1 Introduction ................................................................................................................................................... 36

8.2 Transport sub-layer ..................................................................................................................................... 36

8.2.1 Introduction ................................................................................................................................................... 36

8.2.2 EN 62056-46 related Transport sub-layer .......................................................................................... 37

8.2.3 EN 62056-4-7 related Transport sub-layer ......................................................................................... 37

8.2.4 Transport sub-layer ..................................................................................................................................... 37

8.3 Application sub-layer .................................................................................................................................. 39

8.3.1 General ............................................................................................................................................................. 39

8.3.2 Application layer structure ....................................................................................................................... 39

8.3.3 Service specification .................................................................................................................................... 40

8.3.4 Protocol specification ................................................................................................................................. 40

9 Cross-application data handling ............................................................................................................. 40

9.1 General ............................................................................................................................................................. 40

9.2 Data tunnelling .............................................................................................................................................. 41

9.2.1 General ............................................................................................................................................................. 41

9.2.2 M-Bus Application Layer transferred by DLMS ................................................................................. 41

9.3 Data translation ............................................................................................................................................ 43

10 Extensions to COSEM ................................................................................................................................... 44

10.1 Introduction ................................................................................................................................................... 44

10.2 M-Bus tunnelling ........................................................................................................................................... 44

10.3 Specific object types ..................................................................................................................................... 44

10.3.1 Error reporting object ................................................................................................................................ 44

11 Object Identification System (OBIS) ...................................................................................................... 46

11.1 Object Identification System (Variable naming rules) .................................................................... 46

11.1.1 Introduction ................................................................................................................................................... 46

11.1.2 Structure .......................................................................................................................................................... 46

11.1.3 Manufacturer, utility, consortia and country specific codes ......................................................... 47

11.1.4 Common value groups ................................................................................................................................ 47

11.2 Abstract Objects (A = 0) .............................................................................................................................. 50

11.3 Media specific value groups ...................................................................................................................... 50

11.3.1 General ............................................................................................................................................................. 50

11.3.2 Value groups specific to Heat Cost Allocators .................................................................................... 50

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11.3.3 Value groups specific to Heat or Cooling Meters ............................................................................... 55

11.3.4 Value groups specific to Gas Meters ....................................................................................................... 63

11.3.5 Value groups specific to Water Meters (A = 8 and A = 9) ................................................................ 94

11.4 Other media (Value group A = F) ............................................................................................................. 98

11.4.1 General.............................................................................................................................................................. 98

11.4.2 Value group C codes – Other media ........................................................................................................ 98

11.4.3 Value group D codes – Other media ....................................................................................................... 98

11.4.4 Value group E codes – Other media ........................................................................................................ 98

11.4.5 Value group F codes – Other media ........................................................................................................ 98

11.5 Code presentation ......................................................................................................................................... 98

11.5.1 Reduced ID codes (e.g. for EN 62056-21) ............................................................................................. 98

11.5.2 Display .............................................................................................................................................................. 99

11.5.3 Special handling of value group F ........................................................................................................... 99

Annex A (normative) Basic class meters ........................................................................................................ 101

A.1 General........................................................................................................................................................... 101

A.2 Mandatory contents of a COSEM logical Device .............................................................................. 101

A.3 Basic requirements for Heat Cost Allocators ................................................................................... 101

A.4 Basic requirements for Heat/Cooling meters ................................................................................. 102

A.5 Basic requirements for Gas meters ..................................................................................................... 102

A.6 Basic requirements for Cold/Hot water meters ............................................................................. 103

Annex B (informative) DLMS Glossary ............................................................................................................ 104

B.1 Introduction ................................................................................................................................................. 104

B.2 Activation mask .......................................................................................................................................... 104

B.3 Activity calendar ........................................................................................................................................ 104

B.4 Association LN ............................................................................................................................................. 104

B.5 Association SN ............................................................................................................................................. 104

B.6 Automatic capturing ................................................................................................................................. 104

B.7 Billing Period in COSEM ........................................................................................................................... 104

B.8 Capture .......................................................................................................................................................... 105

B.9 Channel .......................................................................................................................................................... 105

B.10 Clock ............................................................................................................................................................... 105

B.11 Current and last average value objects .............................................................................................. 106

B.12 Date and time .............................................................................................................................................. 106

B.13 Daylight saving............................................................................................................................................ 106

B.14 Demand Register ........................................................................................................................................ 106

B.15 Device ID ....................................................................................................................................................... 108

B.16 Error values ................................................................................................................................................. 108

B.17 High level security ..................................................................................................................................... 108

B.18 Interface modelling ................................................................................................................................... 108

B.19 I/O Control Signals .................................................................................................................................... 108

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B.20 Interoperability .......................................................................................................................................... 108

B.21 Logical device .............................................................................................................................................. 109

B.22 Logical name referencing ....................................................................................................................... 109

B.23 Low level security ...................................................................................................................................... 109

B.24 Manufacturer defined ID-s ..................................................................................................................... 109

B.25 Manufacturer specific abstract objects.............................................................................................. 109

B.26 Manufacturer specific class id ............................................................................................................... 110

B.27 Manufacturer specific data and parameters .................................................................................... 110

B.28 Manufacturer specific OBIS codes ....................................................................................................... 110

B.29 Maximum and minimum value objects .............................................................................................. 110

B.30 Measurement of different media ......................................................................................................... 110

B.31 Measurement method and tariffs ........................................................................................................ 110

B.32 Measurement values series ................................................................................................................... 111

B.33 Missing measurement values ................................................................................................................ 111

B.34 Node ................................................................................................................................................................ 111

B.35 Password ...................................................................................................................................................... 111

B.36 Physical device ........................................................................................................................................... 111

B.37 Power failure handling ............................................................................................................................ 111

B.38 Power failure monitoring ....................................................................................................................... 112

B.39 Preferred readout-values ....................................................................................................................... 112

B.40 Profile objects ............................................................................................................................................. 112

B.41 Profile for billing periods ....................................................................................................................... 112

B.42 Profile generic interface class ............................................................................................................... 112

B.43 Register interface class ............................................................................................................................ 112

B.44 Reset, IC Demand register ...................................................................................................................... 113

B.45 Reset, IC Extended register .................................................................................................................... 113

B.46 Reset, IC Profile generic .......................................................................................................................... 113

B.47 Reset, IC Register ....................................................................................................................................... 113

B.48 Reset, indication of source ..................................................................................................................... 113

B.49 Scaler .............................................................................................................................................................. 113

B.50 Scaler-unit .................................................................................................................................................... 113

B.51 Schedule ........................................................................................................................................................ 114

B.52 Script .....................................................................................................

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