SIST EN 50491-11:2015

General requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) - Part 11: Smart Metering - Application Specifications - Simple External Consumer Display

This European Standard specifies a data model to abstract the metering world towards a simple external consumer display. The data model, as described by means of functional blocks contained in this European Standard, lays down the format of metering data accessible by a simple external consumer display. This data interface would be typically part of the meter communication functions and be accessed by a simple external consumer display via the H1 interface of the TR 50572 between the display and the meter communication functions.
The data interface specified in this document may also be accessed by the LNAP or NNAP through the C or M interface, after which the data could be accessed by HBES devices through the H2 and H3 interface.
In other words, in this way the same data model can be used both on the H1 as well as the H2 and H3 interface.
The document specifies neither the communication mechanisms used on the data interface, nor the applied data privacy and security mechanisms, where national regulations may apply.
The document does also not specify the communication protocol used between the meters and the meter communication functions. However, it takes into account the existing European standards like the EN 13757 and the EN 62056 series for the definition of the data model.

Allgemeine Anforderungen an die Elektrische Systemtechnik für Heim und Gebäude (ESHG) und an Systeme der Gebäudeautomation (GA) -- Teil 11: Smart Metering - Applikationsbeschreibung - Einfache externe Verbrauchsanzeige

Diese Europäische Norm spezifiziert ein Datenmodell zur Abstraktion des Bereichs Verbrauchszählung (en: metering) hinsichtlich einer einfachen externen Verbrauchsanzeige. Das Datenmodell, wie es mittels Funktionsblöcken beschrieben wird, welche in dieser Europäischen Norm enthalten sind, legt ein Format für Mess- und Verbrauchswerte fest, die für eine einfache externe Verbrauchsanzeige verfügbar sind. Diese Datenschnittstelle ist üblicherweise Teil der Kommunikationsfunktionen des Zählers (en: meter). Eine einfache externe Verbrauchsanzeige kann über die H1-Schnittstelle nach TR 50572 auf die Kommunikationsfunktionen des Zählers zugreifen.
Auf die in diesem Dokument spezifizierte Datenschnittstelle kann auch durch das LNAP oder NNAP über die C- oder M-Schnittstelle zugegriffen werden, worauf folgend durch ESHG-Geräte über die H2- oder H3-Schnittstelle auf die Daten zugegriffen werden kann.
Mit anderen Worten können die Daten auf diese Weise sowohl in der H1- als auch in der H2- und H3-Schnittstelle verwendet werden.
Das vorliegende Dokument spezifiziert weder die an der Datenschnittstelle verwendeten Kommunikations-mechanismen noch die angewendeten Datenschutz- und Datensicherheitsmechanismen, wo nationale Vorschriften gelten können.
Das vorliegende Dokument legt auch nicht das Kommunikationsprotokoll fest, das zwischen Zähler und den Kommunikationsfunktionen der Zähler eingesetzt wird. Für die Beschreibung des Datenmodells werden jedoch die bestehenden Europäischen Normen wie EN 13757 und die Reihe der Normen EN 62056 herangezogen.

Exigences générales pour systèmes électroniques pour les foyers domestiques et les bâtiments (HBES) et pour systèmes de gestion technique du bâtiment (SGTB) -- Partie 11: Comptage intelligent - Spécifications d’application - Affichage simple et externe du client

Splošne zahteve za stanovanjske in stavbne elektronske sisteme (HBES) in sisteme za avtomatizacijo in krmiljenje stavb (BACS) - 11. del: Inteligentno merjenje - Aplikacijske specifikacije - Preprost zunanji prikazovalnik za uporabnika

Ta evropski standard določa podatkovni model za prenos podatkov merilnikov na preprost zunanji prikazovalnik za uporabnika. Podatkovni model, kot je opisan na podlagi funkcionalnih blokov, zajetih v tem evropskem standardu, določa obliko meritvenih podatkov, ki so dostopni prek preprostega zunanjega prikazovalnika za uporabnika. Ta podatkovni vmesnik je navadno del funkcij za komunikacijo z merilniki in se do njega dostopa s preprostim zunanjim prikazovalnikom za uporabnika prek vmesnika H1 TR 50572 med prikazovalnikom in funkcijami za komunikacijo z merilniki.
Do podatkovnega vmesnika v tem dokumentu se lahko dostopa tudi z LNAP ali NNAP prek vmesnika C ali M, nakar se lahko do podatkov dostopa z napravami HBES prek vmesnikov H2 in H3.
Tako se lahko isti podatkovni model uporablja tako na vmensiku H1 kot na vmesnikih H2 in H3.
Dokument ne določa mehanizmov za komunikacijo, ki se uporabljajo na podatkovnem vmesniku, niti uporabljenih mehanizmov za zasebnost podatkov in varnost, kjer se za te primere uporabljajo nacionalni predpisi.
Prav tako dokument ne določa komunikacijskih protokolov, ki se uporabljajo med merilniki in funkcijami za komunikacijo z merilniki. Kljub temu upošteva obstoječe evropske standarde za opredelitev podatkovnega modela, kot na primer skupine standardov EN 13757 in EN 62056.

General Information

• Status: Published
• Public Enquiry End Date: 31-Mar-2014
• Publication Date: 29-Jul-2015
• ICS: 35.240.67 - IT applications in building and construction industry
• ICS: 97.120 - Automatic controls for household use
• Technical Committee: ELI - Electrical and communication installations
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 08-Jul-2015
• Due Date: 12-Sep-2015
• Completion Date: 30-Jul-2015
• Mandate: M/441 - Standardisation mandate to CEN, CENELEC and ETSI in the field of measuring instruments for the development of an open architecture for utility meters involving communication protocols enabling interoperability
• Mandate: M/490 - Standardisation mandate to the European Standardisation Organisations (ESOs) to support European Smart Grid deployment
• Ref Project: EN 50491-11:2015 - General requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) - Part 11: Smart Metering - Application Specifications - Simple External Consumer Display

Relations

• Amended By: SIST EN 50491-11:2015/A1:2020 - General requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) - Part 11: Smart Metering - Application Specifications - Simple External Consumer Display
• Effective Date: 01-Jun-2020

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 50491-11:2015
01-september-2015
Splošne zahteve za stanovanjske in stavbne elektronske sisteme (HBES) in
sisteme za avtomatizacijo in krmiljenje stavb (BACS) - 11. del: Inteligentno
merjenje - Aplikacijske specifikacije - Preprost zunanji prikazovalnik za uporabnika
General requirements for Home and Building Electronic Systems (HBES) and Building
Automation and Control Systems (BACS) - Part 11: Smart Metering - Application
Specifications - Simple External Consumer Display
Allgemeine Anforderungen an die Elektrische Systemtechnik für Heim und Gebäude
(ESHG) und an Systeme der Gebäudeautomation (GA) -- Teil 11: Smart Metering -
Applikationsbeschreibung - Einfache externe Verbrauchsanzeige
Exigences générales pour systèmes électroniques pour les foyers domestiques et les
bâtiments (HBES) et pour systèmes de gestion technique du bâtiment (SGTB) -- Partie
11: Comptage intelligent - Spécifications d’application - Affichage simple et externe du
client
Ta slovenski standard je istoveten z: EN 50491-11:2015
ICS:
35.240.99 8SRUDEQLãNHUHãLWYH,7QD IT applications in other fields
GUXJLKSRGURþMLK
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
SIST EN 50491-11:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50491-11:2015

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SIST EN 50491-11:2015


EUROPEAN STANDARD EN 50491-11

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2015
ICS 97.120

English Version
General requirements for Home and Building Electronic Systems
(HBES) and Building Automation and Control Systems (BACS) -
Part 11: Smart Metering - Application Specifications - Simple
External Consumer Display
Exigences générales pour systèmes électroniques pour les Allgemeine Anforderungen an die Elektrische
foyers domestiques et les bâtiments (HBES) et pour Systemtechnik für Heim und Gebäude (ESHG) und an
systèmes de gestion technique du bâtiment (SGTB) - Partie Systeme der Gebäudeautomation (GA) - Teil 11: Smart
11: Comptage intelligent - Spécifications d'application - Metering - Applikationsbeschreibung - Einfache externe
Affichage simple et externe du client Verbrauchsanzeige
This European Standard was approved by CENELEC on 2015-05-04. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.



European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50491-11:2015 E

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SIST EN 50491-11:2015
EN 50491-11:2015 (E)
Contents
Foreword . 4
Introduction . 5
1 Scope . 6
2 Normative References. 6
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviations . 7
4 General reference model . 8
5 Requirements for the Data interface . 10
5.1 General . 10
5.2 Minimization of data transmission . 11
5.3 Data consistency . 11
5.4 Filtering of message types and data points . 11
6 Conformity and Testing . 12
7 Metering Functional Blocks of MDC . 12
7.1 MDC Heat Meter (M_HEATM) . 12
7.1.1 Aims and objectives . 12
7.1.2 Functional specification . 12
7.1.3 Constraints . 12
7.1.4 Data Point Overview . 13
7.2 MDC Heat Cost Allocator (M_HCA) . 15
7.2.1 Aims and objectives . 15
7.2.2 Functional specification . 15
7.2.3 Constraints . 15
7.2.4 Data Point Overview . 16
7.3 MDC Water Meter (M_WATERM) . 17
7.3.1 Aims and objectives . 17
7.3.2 Functional specification . 17
7.3.3 Constraints . 17
7.3.4 Data Point Overview . 18
7.4 MDC Generic Meter (M_GENERICM) . 19
7.4.1 Aims and objectives . 19
7.4.2 Functional specification . 19
7.4.3 Constraints . 20
7.4.4 Data Point Overview . 20
7.5 MDC Gas Meter (M_GASM) . 21
7.5.1 Aims and objectives . 21
7.5.2 Functional specification . 21
7.5.3 Constraints . 22
7.5.4 Data Point Overview . 22
7.6 MDC Electricity Meter (M_ELECM) . 23
7.6.1 Aims and objectives . 23
7.6.2 Functional specification . 23
7.6.3 Constraints . 24
7.6.4 Data Point Overview . 24
7.7 MDC Breaker (M_BREAKERM) . 26
7.7.1 Aims and objectives . 26
7.7.2 Functional Specification . 26
7.7.3 Constraints . 26
7.7.4 Datapoint description. 26
7.8 MDC Valve (M_VALVEM). 27
7.8.1 Aims and objectives . 27
7.8.2 Functional Specification . 27
7.8.3 Constraints . 28
2

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SIST EN 50491-11:2015
EN 50491-11:2015 (E)
7.8.4 Datapoint description. 28
8 Metering Data model . 29
8.1 Introduction . 29
8.2 Boolean Value . 29
8.3 1-octet unsigned counter value . 30
8.4 Datapoint Types 2-Octet Float Value” . 30
8.5 2-octet unsigned counter value . 31
8.6 4-Octet Signed unsigned counter Value . 31
8.7 4 Octet signed time period . 31
8.8 Datapoint Type “MeteringValue” . 32
8.8.1 General . 32
8.8.2 Coding General . 32
8.8.3 Coding VallnfField . 33
8.8.4 Coding Status . 34
8.8.5 Recommended display format for metering data . 34
8.9 DPT Active Energy . 35
8.10 DPT for tariff information . 36
8.11 DPT_Currency . 36
8.12 DPTs for Price Information . 37
8.13 Format of DPT_DateTime . 37
8.13.1 Coding . 37
8.13.2 Remarks to the coding of DPT_DateTime . 38
8.14 Datapoint Type DPT_Metering_DeviceType . 41
8.15 Datapoint Type Character Set . 42
8.16 Datapoint Type DPT_VarString_8859_1 . 43
8.17 DPT_Gas_Measurement_Condition . 43
8.18 Datapoint Type DPT_Meter_BreakerValve_State . 44
8.19 Datapoint Type DPT_Meter_Mode . 44
8.20 Datapoint Type DPT_Power_Threshold_Status . 45
8.21 Datapoint Type DPT_Battery_Status . 45
Bibliography . 46

3

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SIST EN 50491-11:2015
EN 50491-11:2015 (E)
Foreword
This document (EN 50491-11:2015) has been prepared by CLC/TC 205 "Home and Building Electronic
Systems (HBES)".
The following dates are fixed:
(dop) 2016-05-04
• latest date by which this document has to be
implemented at national level by publication of
an identical national standard or by
endorsement
(dow) 2018-05-04
• latest date by which the national standards
conflicting with this 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 [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association.
EN 50491-11 is part of the EN 50491 series, General requirements for Home and Building Electronic
Systems (HBES) and Building Automation and Control Systems (BACS), which comprises the following
parts:
− Part 1: General;
− Part 2: Environmental conditions;
− Part 3: Electrical safety requirements;
− Part 4-1: General functional safety requirements for products intended to be integrated in Building
Electronic Systems (HBES) and Building Automation and Control Systems (BACS);
− Part 5-1: EMC requirements, conditions and test setup;
− Part 5-2: EMC requirements for HBES/BACS used in residential, commercial and light industry
environment;
− Part 5-3: EMC requirements for HBES/BACS used in industry environment;
− Part 6-1: HBES installations — Installation and planning;
− Part 6-3: HBES installations — Assessment and definition of levels [Technical Report
CLC/TR 50491-6-3];
− Part 11: Smart Metering — Application Specification — Simple External Consumer Display (the
present document);
− Part 12: Smart grid — Application specification — Interface and framework for customer (currently at
Enquiry stage).
4

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SIST EN 50491-11:2015
EN 50491-11:2015 (E)
Introduction
In March 2009, the European Commission issued a mandate M/441 for the standardization of smart
metering functionalities and communication for usage in Europe for electricity, gas, heat and water
applications to ensure interoperability of technologies and applications within a harmonized European
market.
As a result, a Technical Report, CEN/CLC/ETSI TR 50572, Functional Reference Architecture for
Communications in Smart Metering Systems, was published in December 2011.
As a consequence of this work and in line with the CEN/CLC/ETSI TR 50572 functional reference
architecture, CLC/TC 205, responsible for Home and Building Electronic Systems, was entrusted with the
task to formulate standards for the communication from the smart metering system towards the home.
5

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SIST EN 50491-11:2015
EN 50491-11:2015 (E)
1 Scope
This European Standard specifies a data model to abstract the metering world towards a simple external
consumer display. The data model, as described by means of functional blocks contained in this
European Standard, lays down the format of metering data accessible by a simple external consumer
display. This data interface would be typically part of the meter communication functions and be accessed
by a simple external consumer display via the H1 interface of the CEN/CLC/ETSI TR 50572 between the
display and the meter communication functions.
The data interface specified in this document may also be accessed by the LNAP or NNAP through the C
or M interface, after which the data could be accessed by HBES devices through the H2 and H3 interface.
In other words, in this way the same data model can be used both on the H1 as well as the H2 and H3
interface.
The document specifies neither the communication mechanisms used on the data interface, nor the
applied data privacy and security mechanisms nor the ergonomics of the simple external consumer
displays, where national regulations may apply.
The document does also not specify the communication protocol used between the meters and the meter
communication functions. However, it takes into account the existing European standards like the
EN 13757 series (in particular EN 13757-3:2013 and its Annex O) and the EN 62056 series for the
definition of the data model.
2 Normative References
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 13757 (all parts), Communication system for meters
prEN 50491-12, General requirements for Home and Building Electronic Systems (HBES) and Building
Automation and Control Systems (BACS) — Part 12: Smart grid — Application specification — Interface
and framework for customer
CEN/CLC/ETSI TR 50572, Functional Reference Architecture for Communications in Smart Metering
Systems
EN 62056 (all parts), Electricity metering data exchange — The DLMS/COSEM suite (IEC 62056, all
parts)
ISO 4217, Codes for the representation of currencies and funds
ISO/IEC 8859-1, Information technology — 8-bit single-byte coded graphic character sets — Part 1: Latin
alphabet No. 1
3 Terms, definitions and abbreviations
3.1 Terms and definitions
3.1.1
meter
instrument for measuring, memorizing and displaying data related to the consumption of a commodity
6

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SIST EN 50491-11:2015
EN 50491-11:2015 (E)
3.1.2
data point
container element, in which information is located related to a function of a product (in e.g. memory or a
register)
3.2 Abbreviations
C C interface – for the term and definition, see CEN/CLC/ETSI TR 50572
Cs Company Specific
FB Functional Block
H1 H1 interface – for the term and definition, see CEN/CLC/ETSI TR 50572
H2 H2 interface – for the term and definition, see CEN/CLC/ETSI TR 50572
H3 H3 interface – for the term and definition, see CEN/CLC/ETSI TR 50572
LNAP Local Network Access Point - for the term and definition, see CEN/CLC/ETSI TR 50572
M M interface – for the term and definition, see CEN/CLC/ETSI TR 50572
NA Not Allowed / Not Applicable
MCF Meter Communication Function – for the term and definition, see CEN/CLC/ETSI TR 50572
NNAP Neighbourhood Network Access Point – for the term and definition,
see CEN/CLC/ETSI TR 50572
HVAC Heating Ventilation Air Conditioning
7

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SIST EN 50491-11:2015
EN 50491-11:2015 (E)
4 General reference model

Figure 1 — Metering system topology from CEN/CLC/ETSI/TR 50572
Reference is made to the Reference architecture diagram for smart metering communications as given in
CEN/CLC/ETSI/TR 50572.
In this European Standard, a functional block is specified for each typical metering function, grouping a
number of in- and output data points, as depicted in Figure 1.
Figure 1 depicts logical entities and not physical devices.
NOTE 1 This standard does not define requirements for devices acting as data sources for the simple external
consumer display (devices sending input on the I interface shown in Figure 1) and are covered by other European
standards.
In line with the M/441 architecture, the information flow on the H1 is predominantly from the meter
communication function in one or more meters to one or more simple external consumer displays (or
optionally one common display), whereby the latter acts as sink of the information obtained through the
H1 interface from the meter communication functions. Where necessary, the consumer display may poll
data from the meter communication functions, e.g. historical values. In no case shall it be able to alter
metering data through the consumer display. Hence, most functional blocks of the data interface specified
in this European Standard contain data that are intended as output data to a connected display.
8

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SIST EN 50491-11:2015
EN 50491-11:2015 (E)
The data structures used on the H1 interface are part of this European Standard. All other underneath
described interfaces are informative.
NOTE 2 The wired Meter communication according to EN 13757-2 / EN 13757-6 is only applicable if it is used
exclusively for the H1 interface.
The functional blocks specified in this document may also be accessed by the LNAP or NNAP through
the C or M interface, after which the data could be accessed bi-directionally with HBES devices through
the H2 and H3 interface.
The communication on the H2 and H3 interface is part of prEN 50491-12.
For each connected metering function (Tx Meter in Figure 1), the corresponding metering communication
function shall hold an entity of the corresponding functional block. The input for each connected metering
function is supplied by meters complying with the EN 62056 and EN 13757 series and is not part of this
standard.
1)
The input to the LNAP and NNAP is due to be part of the IEC 62746 .
The measurable quantities shown in Table 1 can be represented in the data interface through the listed
functional blocks (FB):
Table 1 – Measurable quantities
Physical Media FB
Other M_GENERICM
Oil M_GENERICM
Electricity M_ELECM
Gas M_GASM b)
Heat (outlet) M_HEATM
Steam M_GENERICM
Warm Water (30°C to 90°C) M_WATERM
Water M_WATERM
Heat cost allocator M_HCA
Cooling Load meter (outlet) M_HEATM
Cooling Load meter (inlet) M_HEATM
Heat (inlet) M_HEATM
Heat and Cool M_HEATM
Breaker M_BREAKERM
Valve M_VALVEM
Waste water meter M_WATERM

1) Under development.
9

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SIST EN 50491-11:2015
EN 50491-11:2015 (E)
5 Requirements for the Data interface
5.1 General
Each metering function shall be represented by a corresponding functional block, typically part of the
metering communication function and accessed by a simple user display.
Some meters may also provide metering data history values (e.g. monthly data). It is highly
recommended that for each meter a limited set of history values is available, e.g. covering the previous
week, previous month or previous year.
Depending on national regulations, it may be necessary that some of the data survive power down
situations.
In case of one common display unit supporting multiple meter devices, during installation and teach-in
procedures of metering devices, a meter device directory shall be created to assign linked meters.
The format and management of the metering device directory is company and/or protocol specific and not
part of this specification. Appropriate procedures shall be provided to:
• add a new metering device, and
• replace a metering device by another device (with different identification number and e.g. different
unit/resolution of the metering data), and
• delete a metering device.
The above workflow shall be supported by appropriate means (e.g. device localization via display, text
information…).
Two data points ‘MeterReplacement’ and ‘MeterReplacementCounter’ are defined for each metering
Functional Block to detect and manage replacement of metering devices. Further company specific
mechanisms can be implemented to simplify the meter replacement workflow.
For each meter a ‘UserText’ may be configured to simplify identification and localization of the meter. This
‘UserText’ can be useful in case of:
• service, maintenance;
• binding of metering data to displays;
• billing information for the end user;
• etc.
In case of removal or deletion of a metering device from the device directory, it is highly recommended to
keep the corresponding instance of the functional block alive and set all data in the Functional Block to
void values (see below). It is not recommended to re-assign functional block Indices of the remaining
functional blocks because data processing by the data display could be corrupted.
After commissioning or power up, metering data can be void or outdated for hours until a new message
from a metering device is received by the metering communication function.
On customer move out, certain data may need to be made unavailable for the next customer.
On supplier change, certain data needs to be made unavailable for the next supplier.
The ‘OutOfService’ Status attribute in metering Data Points shall indicate void data. This status attribute
may be set in the following cases:
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SIST EN 50491-11:2015
EN 50491-11:2015 (E)
• No metering device is connected to the metering Functional Block (ex-factory default data).
• A previously connected metering device is removed or deleted from the device directory. Handling of
the metering device directory is manufacturer specific.
In case of meter replacement, all metering data in the corresponding Functional Block shall be set to void
as upon removal of the previous meter until the first valid metering data message from the new device is
received. This may take several hours.
NOTE This specification does not foresee specific mechanisms to supervise the presence/function of connected
metering devices using life-check mechanisms etc. Because of very manufacturer specific cyclic update periods for
metering messages, a
...

SLOVENSKI STANDARD
oSIST prEN 50491-11:2014
01-januar-2014
Splošne zahteve za stanovanjske in stavbne elektronske sisteme (HBES) in
sisteme za avtomatizacijo in krmiljenje stavb (BACS) - 11. del: Inteligentno
merjenje - Aplikacijske specifikacije - Preprost zunanji prikazovalnik za uporabnika
General requirements for Home and Building Electronic Systems (HBES) and Building
Automation and Control Systems (BACS) - Part 11: Smart Metering - Application
Specifications - Simple External Consumer Display
Allgemeine Anforderungen an die Elektrische Systemtechnik für Heim und Gebäude
(ESHG) und an Systeme der Gebäudeautomation (GA) -- Teil 11: Smart Metering -
Applikationsbeschreibung - Einfache externe Verbrauchsanzeige
Exigences générales pour systèmes électroniques pour les foyers domestiques et les
bâtiments (HBES) et pour systèmes de gestion technique du bâtiment (SGTB) -- Partie
11: Comptage intelligent - Spécifications d’application - Affichage simple et externe du
client
Ta slovenski standard je istoveten z: prEN 50491-11:2013
ICS:
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
oSIST prEN 50491-11:2014 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 50491-11:2014

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oSIST prEN 50491-11:2014
 DRAFT
EUROPEAN STANDARD
prEN 50491-11

NORME EUROPÉENNE
November 2013
EUROPÄISCHE NORM

ICS 97.120


English version


General requirements for Home and Building Electronic Systems (HBES) and
Building Automation and Control Systems (BACS) -
Part 11: Smart Metering -
Application Specifications -
Simple External Consumer Display



Exigences générales pour systèmes Allgemeine Anforderungen an die Elektrische
électroniques pour les foyers domestiques et les Systemtechnik für Heim und Gebäude (ESHG)
bâtiments (HBES) et pour systèmes de gestion und an Systeme der Gebäudeautomation (GA) -
technique du bâtiment (SGTB) - Teil 11: Smart Metering -
Partie 11: Comptage intelligent - Applikationsbeschreibung -
Spécifications d’application - Einfache externe Verbrauchsanzeige
Affichage simple et externe du client



This draft European Standard is submitted to CENELEC members for CENELEC enquiry.
Deadline for CENELEC: 2014-04-18.

It has been drawn up by CLC/TC 205.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CENELEC in three official versions (English, French, German). A version in
any other language made by translation under the responsibility of a CENELEC member into its own language and notified to
the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, Turkey and the United Kingdom.

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.


CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Project: 24335 Ref. No. prEN 50491-11:2013 E

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Contents
Foreword . 4
Introduction . 5
1 Scope . 5
2 Normative References. 5
3 Definitions and abbreviations . 6
3.1 Definitions . 6
3.1.1 Meter . 6
3.2 Abbreviations . 6
4 General reference model . 7
5 Requirements for the Data interface . 8
5.1 General . 8
5.2 Minimization of data transmission . 9
5.3 Data consistency . 10
6 Conformity and Testing . 10
7 Metering Functional Blocks of MDC . 10
7.1 MDC Heat Meter (M_HEATM) . 10
7.1.1 Aims and objectives . 10
7.1.2 Functional specification . 10
7.1.3 Constraints . 10
7.1.4 Data Point Overview . 11
7.2 MDC Heat Cost Allocator (M_HCA) . 13
7.2.1 Aims and objectives . 13
7.2.2 Functional specification . 13
7.2.3 Constraints . 13
7.2.4 Data Point Overview . 14
7.3 MDC Water Meter (M_WATERM) . 15
7.3.1 Aims and objectives . 15
7.3.2 Functional specification . 15
7.3.3 Constraints . 15
7.3.4 Data Point Overview . 16
7.4 MDC Generic Meter (M_GENERICM) . 17
7.4.1 Aims and objectives . 17
7.4.2 Functional specification . 17
7.4.3 Constraints . 18
7.4.4 Data Point Overview . 18
7.5 MDC Gas Meter (M_GASM) . 19
7.5.1 Aims and objectives . 19
7.5.2 Functional specification . 19
7.5.3 Constraints . 20
7.5.4 Data Point Overview . 20
7.6 MDC Electricity Meter (M_ELECM) . 21
7.6.1 Aims and objectives . 21
7.6.2 Functional specification . 22
7.6.3 Constraints . 22
7.6.4 Data Point Overview . 22
7.7 MDC Breaker (M_BREAKERM) . 24
7.7.1 Aims and objectives . 24
7.7.2 Functional Specification . 24
7.7.3 Constraints . 24
7.7.4 Datapoint description. 24
7.8 MDC Valve (M_VALVEM). 26
7.8.1 Aims and objectives . 26
7.8.2 Functional Specification . 26

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7.8.3 Constraints . 26
7.8.4 Datapoint description. 26
8 Metering Data model . 28
8.1 Introduction . 28
8.2 Boolean Value . 28
8.3 1-octet unsigned counter value . 28
8.4 Datapoint Types 2-Octet Float Value” . 29
8.5 2-octet unsigned counter value . 29
8.6 4-Octet Signed unsigned counter Value . 30
8.7 4 Octet signed time period . 30
8.8 Datapoint Type “MeteringValue” . 31
8.8.1 General . 31
8.8.2 Coding General . 31
8.8.3 Coding VallnfField . 32
8.8.4 Coding Status . 33
8.8.5 Recommended display format for metering data . 33
8.9 DPT Active Energy . 34
8.10 DPT for tariff information . 35
8.11 DPT_Currency . 35
8.12 DPTs for Price Information . 36
8.13 Format of DPT_DateTime . 36
8.13.1 Coding . 36
8.13.2 Remarks to the coding of DPT_DateTime . 37
8.14 Datapoint Type DPT_Metering_DeviceType . 40
8.15 Datapoint Type Character Set . 41
8.16 Datapoint Type DPT_VarString_8859_1 . 42
8.17 DPT_Gas_Measurement_Condition . 42
8.18 Datapoint Type DPT_Meter_BreakerValve_State . 43
8.19 Datapoint Type DPT_Meter_Mode . 43
8.20 Datapoint Type DPT_Power_Threshold_Status . 44
8.21 Datapoint Type DPT_Battery_Status . 44

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Foreword
This document (prEN 50491-11:2013) has been prepared by CLC/TC 205 "Home and Building Electronic
Systems (HBES)".
This document is currently submitted to the Enquiry.
CENELEC takes no position concerning the evidence, validity and scope of patent rights.
EN 50491-11 is part of the EN 50491 series of European Standards, which will comprise the following
parts:
Part 1: Standardization structure
Part 2: Environmental Conditions and Requirements
Part 3: Electrical Safety Requirements
Part 4-1: Functional Safety Requirements: General
Part 4-2: Functional Safety Requirements: Safety Related Equipment
Part 5-1: EMC – Requirements, conditions and test setups
Part 5-2: EMC – Requirements for systems used in residential, commercial and light industry
Part 5-3: EMC – Requirements for industrial environment
Part 6-1: Installation requirements
Part 6-2: Inspection and Testing of HBES/BACS Installation
Part 6-3: Assessment of HBES/BACS Installations
Part 11: Smart Metering – Application Specification – Simple External Consumer Display
Part 12: Smart Metering/Smart Grid – Application Specification – DSM and Energy Management

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Introduction
In March 2009, the European Commission issued a mandate M/441 for the standardization of smart
metering functionalities and communication for usage in Europe for electricity, gas, heat and water
applications to ensure interoperability of technologies and applications within a harmonised European
market.
As a result, a technical report, CEN-CLC-ETSI TR 50572:2011 "Functional reference architecture for
communications in smart metering systems" was published in December 2011.
As a consequence of this work and in line with the TR 50572 functional reference architecture, CLC
TC205 responsible for Home and Building Electronic Systems, was entrusted with the task to formulate
standards for the communication from the smart metering system towards the home.
1 Scope
This European Standard specifies a data model to abstract the metering world towards a simple external
consumer display. The data model, as described by means of functional blocks contained in this
European Standard, lays down the format of metering data accessible by a simple external consumer
display. This data interface would be typically part of the meter communication functions and be accessed
by a simple external consumer display via the H1 interface of the TR 50572 between the display and the
meter communication functions.
The data interface specified in this document may also be accessed by the LNAP or NNAP through the C
or M interface, after which the data could be accessed by HBES devices through the H2 and H3 interface.
In other words, in this way the same data model can be used both on the H1 as well as the H2 and H3
interface.
The document specifies neither the communication mechanisms used on the data interface, nor the
applied data privacy and security mechanisms, where national regulations may apply.
The document does also not specify the communication protocol used between the meters and the meter
communication functions. However, it takes into account the existing European standards like the EN
13757 and the EN 62056 series for the definition of the data model.
2 Normative References
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 50491 General Requirements for Home and Building Electronic Systems (HBES) and Building
Automation Control Systems (BACS) – All Parts
TR 50572 Functional reference architecture for communications in smart metering systems
EN 13757 Communication system for meters and remote reading of meters – All Parts
EN 62056 Electricity metering - Data exchange for meter reading, tariff and load control – All
Parts
System interfaces and communication protocol profiles relevant for systems connected
IEC 62746
to the Smart Grid

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3 Definitions and abbreviations
3.1 Definitions
3.1.1 Meter
Instrument for measuring, memorizing and displaying data related to the consumption of a commodity.
3.2 Abbreviations
C C interface – for terms and definitions see TR50572
Cs Company Specific
FB Functional Block
H1 The H1 interface – for terms and definitions see TR50572
H2 The H2 interface – for terms and definitions see TR50572
H3 The H3 interface – for terms and definitions see TR50572
LNAP Local Network Access Point - for terms and definitions see TR50572
M The M interface – for terms and definitions see TR50572
NA Not Allowed / Not Applicable
MCF Meter Communication Function – for terms and definitions see TR50572
NNAP Neighbourhood Network Access Point - for terms and definitions see TR50572
HVAC Heating Ventilation Air Conditioning

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4 General reference model

Figure 1 – Metering system topology
In this European Standard, a functional block is specified for each typical metering function, grouping a
number of in- and output data points, as depicted in Figure 1.
Figure 1 depicts logical entities and not physical devices.
In line with the M441 architecture, the information flow on the H1 is predominantly from the meter
communication function in one or more meters to one or more simple external consumer displays (or
optionally one common display), whereby the latter acts as sink of the information obtained through the
H1 interface from the meter communication functions. In exceptional cases, the consumer display may
poll data from the meter communication functions, e.g. historical values. In no case shall it be able to alter
metering data through the consumer display. Hence, most functional blocks of the data interface spe-
cified in this European Standard contain data that are intended as output data to a connected display.
The data structures used on the H1 interface are part of this European Standard. All other underneath
described interfaces are informative.
The functional blocks specified in this document may also be accessed by the LNAP or NNAP through
the C or M interface, after which the data could be accessed bi-directionally with HBES devices through
the H2 and H3 interface.
The communication on the H2 and H3 interface is part of the EN 50491-12 standard.
For each connected metering function (Tx Meter in Figure 1), the corresponding metering communication
function shall hold an entity of the corresponding functional block. The input for each connected metering
function is supplied by meters complying with EN 62056 and EN 13757 and is not part of this standard.
The input to the LNAP and NNAP is part of the IEC Standard 62746.
The measurable quantities shown in Table 1 can be represented in the data interface through the listed
functional blocks (FB):

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Table 1 – Measurable quantities
Physical Media FB
Other M_GENERICM
Oil M_GENERICM
Electricity M_ELECM
Gas M_GASM b)
Heat (outlet) M_HEATM
Steam M_GENERICM
Warm Water (30°C to 90°C) M_WATERM
Water M_WATERM
Heat cost allocator M_HCA
Cooling Load meter (outlet) M_HEATM
Cooling Load meter (inlet) M_HEATM
Heat (inlet) M_HEATM
Heat and Cool M_HEATM
Breaker M_BREAKERM
Valve M_VALVEM
Waste water meter M_WATERM
5 Requirements for the Data interface
5.1 General
Each metering function shall be represented by a corresponding functional block, typically part of the
metering communication function and accessed by a simple user display.
Some meters may also provide metering data history values (e.g. monthly data). It is highly
recommended that for each meter a limited set of history values is available.
NOTE depending on national regulations, it may be necessary that some of the data survives power down situations.
In case of one common display unit supporting multiple meter devices, during installation and teach-in
procedures of metering devices, a meter device directory shall be created to assign linked meters.
The format and management of the metering device directory is company and/or protocol specific and not
part of this specification. Appropriate procedures shall be provided to:
• add a new metering device, and
• replace a metering device by another device (with different identification number and e.g. different
unit/resolution of the metering data), and
• delete a metering device.
The above workflow shall be supported by appropriate means (e.g. device localisation via display, text
information, …).

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Two data points ‘MeterReplacement’ and ‘MeterReplacementCounter’ are defined for each metering
Functional Block to detect and manage replacement of metering devices. Further company specific
mechanisms can be implemented to simplify the meter replacement workflow.
For each meter a ‘UserText’ may be configured to simplify identification and localization of the meter. This
‘UserText’ can be useful in case of
• service, maintenance
• binding of metering data to displays
• billing information for the end user
• etc.
In case of removal or deletion of a metering device from the device directory, it is highly recommended to
keep the corresponding instance of the functional block alive and set all data in the Functional Block to
void values (see below). It is not recommended to re-assign functional block Indices of the remaining
functional blocks because data processing by the data display could be corrupted.
After commissioning or power up, metering data can be void or outdated for hours until a new message
from a metering device is received by the metering communication function.
On customer move out, certain data may need to be made unavailable for the next customer.
On supplier change, certain data needs to be made unavailable for the next supplier.
The ‘OutOfService’ Status attribute in metering Data Points shall indicate void data. This status attribute
may be set in the following cases:
• No metering device is connected to the metering Functional Block (ex-factory default data).
• A previously connected metering device is removed or deleted from the device directory. Handling of
the metering device directory is manufacturer specific.
In case of meter replacement, all metering data in the corresponding Functional Block shall be set to void
as upon removal of the previous meter until the first valid metering data message from the new device is
received. This may take several hours.
NOTE This specification does not foresee specific mechanisms to supervise the presence/function of connected metering devices
using life-check mechanisms etc. Because of very manufacturer specific cyclic update periods for metering messages, a life-check
‘timeout’ cannot be standardized. Therefore this specification does not put requirements to set metering data automatically
‘OutOfService’ in case of missing/outdated data from the connected metering device.
The simply user display can access metering data by
• polling of Functional Blocks and Data Points or
• regularly by data being pushed to the display or
• notifications or messages (e.g. sent by an external actor or generated by the meter). Data structures
for this type of messages are not specified in this standard.
5.2 Minimization of data transmission
Meter data comprises data that change infrequently and some that change frequently. The data
transmission rate shall reflect the frequency with which the data is expected to change. In the case the
data is polled, the user display shall not access a next Data Point value before the meter communication
function has responded to the previous Data Point access, unless the meter communication function did
not respond to the user display’s request within a time that can be set manufacturer specific.

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5.3 Data consistency
During polling of metering data, new metering data may be received and read-out data may be
inconsistent. For data consisten
...