IEC 62056-61:2006

INTERNATIONAL IEC
STANDARD 62056-61
Second edition
2006-11
Electricity metering –
Data exchange for meter
reading, tariff and load control –
Part 61:
Object identification system (OBIS)
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,
edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to
search by a variety of criteria including text searches, technical committees
and date of publication. On-line information is also available on recently issued
publications, withdrawn and replaced publications, as well as corrigenda.
• IEC Just Published
This summary of recently issued publications (www.iec.ch/online_news/ justpub)
is also available by email. Please contact the Customer Service Centre (see
below) for further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:

Email: custserv@iec.ch
Tel: +41 22 919 02 11
Fax: +41 22 919 03 00
INTERNATIONAL IEC
STANDARD 62056-61
Second edition
2006-11
Electricity metering –
Data exchange for meter
reading, tariff and load control –
Part 61:
Object identification system (OBIS)
© IEC 2006 ⎯ Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale W
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 62056-61 © IEC:2006(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.7
2 Normative references .7
3 Terms, definitions and abbreviations .8
4 OBIS structure.8
4.1 General .8
4.2 Value group A .8
4.3 Value group B .8
4.4 Value group C .8
4.5 Value group D .9
4.6 Value group E .9
4.7 Value group F.9
4.8 Manufacturer specific codes .9
4.9 Reserved ranges .9
4.10 Summary of rules for manufacturer, utility, consortia and country specific codes .9
5 Value group definitions.11
5.1 Value group A .11
5.2 Value group B .11
5.3 Value group C .12
5.4 Value group D .15
5.5 Value group E .20
5.6 Value group F.25
5.7 Abstract objects .26
5.8 Electricity-related general purpose objects .29
5.9 List objects.32
5.10 Data profile objects .32
5.11 Register table objects.33

Annex A (normative) Code presentation.34

Bibliography.36

INDEX .37

Figure 1 – OBIS code structure.8
Figure 2 – Quadrant definitions for active and reactive power .15
Figure 3 – Model of the line and the transformer for calculation of loss quantities .22
Figure A.1 – Reduced ID code presentation .34

Table 1 – Rules for manufacturer, utility, consortia and country specific codes .10
Table 2 – Value group A codes .11
Table 3 – Value group B codes .11

62056-61 © IEC:2006(E) – 3 –
Table 4 – Value group C codes – Abstract objects .12
Table 5 – Value group C codes – Electricity.13
Table 6 – Value group D codes – Electricity.15
Table 7 – Value group D codes – Consortia specific identifiers .18
Table 8 – Value group D codes – Country specific identifiers .19
Table 9 – Value group E codes – Tariff rates .20
Table 10 – Value group E codes – Harmonics.21
Table 11 – Value group E codes – Extended phase angle measurement.21
Table 12 – Value group E codes – Transformer and line loss quantities.23
Table 13 – Value group E codes – UNIPEDE voltage dip quantities .25
Table 14 – Abstract object codes .26
Table 15 – General error messages .28
Table 16 – General purpose codes – Electricity .29
Table 17 – Electricity related error messages .32
Table 18 – General list objects.32
Table 19 – Electricity related list objects .32
Table 20 – Profile codes – Abstract .32
Table 21 – Profile codes – Electricity .33
Table 22 – Register table object codes – Abstract .33
Table 23 – Register table object codes – Electricity .33
Table A.1 – Example of display code replacement .34
Table A.2 – Value group F – Billing periods .35

– 4 – 62056-61 © IEC:2006(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICITY METERING – DATA EXCHANGE
FOR METER READING, TARIFF AND LOAD CONTROL –

Part 61: Object identification system (OBIS)

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed that compliance
with this International Standard may involve the use of a maintenance service concerning the stack of protocols on
which the present standard IEC 62056-61 is based.
The IEC takes no position concerning the evidence, validity and scope of this maintenance service.
The provider of the maintenance service has assured the IEC that he is willing to provide services under
reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the
statement of the provider of the maintenance service is registered with the IEC. Information – see also 5.1 – may
be obtained from:
DLMS User Association
Geneva / Switzerland
www.dlms.ch
International Standard IEC 62056-61 has been prepared by IEC technical committee 13:
Equipment for electrical energy measurement and load control.
———————
Device Language Message Specification

62056-61 © IEC:2006(E) – 5 –
This second edition cancels and replaces the first edition published in 2002 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• some parts of the “Manufacturer specific” ranges have been changed to “Reserved” to
open code space for future standard code purposes;
• “Utility specific” ranges have been allocated;
• “Consortia specific” codes similar to “Country specific” codes have been introduced;
• a table explaining the rules for “Manufacturer specific”, “Country specific” and “Consortia
specific” codes has been added;
• new time integral types of quantities have been added, some definitions have been
clarified;
• new OBIS codes to identify transformer and line loss quantities, voltage dips, power
failures, statuses, etc. have been added;
• some list objects and profiles may be now abstract or electricity related;
• a second billing period counter mechanism has been added and the description of
handling value group F has been amended.
The text of this standard is based on the following documents:
FDIS Report on voting
13/1388/FDIS 13/1399/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of the publication may be issued at a later date.

– 6 – 62056-61 © IEC:2006(E)
INTRODUCTION
The competitive electricity market requires an ever-increasing amount of timely information
concerning the usage of electrical energy. Recent technology developments enable to build
intelligent static metering equipment, which is capable of capturing, processing and
communicating this information to all parties involved.
For further analysis of this information, for the purposes of billing, load, customer and contract
management, it is necessary to uniquely identify all data in a manufacturer independent way,
collected manually or automatically, via local or remote data exchange.
The definition of identification codes is based on DIN 43863-3:1997.

62056-61 © IEC:2006(E) – 7 –
ELECTRICITY METERING – DATA EXCHANGE FOR
METER READING, TARIFF AND LOAD CONTROL –

Part 61: Object identification system (OBIS)

1 Scope
The OBject Identification System (OBIS) defines the identification codes (ID-codes) for
commonly used data items in electricity metering equipment. This part of IEC 62056 specifies
the overall structure of the identification system and the mapping of all data items to their
identification codes.
OBIS provides a unique identifier for all data within the metering equipment, including not only
measurement values, but also abstract values used for configuration or obtaining information
about the behaviour of the metering equipment. The ID codes defined in this standard are
used for the identification of
• logical names of the various instances of the interface classes, or objects, as defined in
IEC 62056-62;
• data transmitted through communication lines, see Clause A. 1;
• data displayed on the metering equipment, see Clause A. 2.
This standard applies to all types of electricity metering equipment, such as fully integrated
meters, modular meters, tariff attachments, data concentrators, etc.
To cover metering equipment measuring energy types other than electricity, combined
metering equipment measuring more than one type of energy or metering equipment with
several physical measurement channels, the concepts of medium and channels are
introduced. This allows meter data originating from different sources to be identified. While
this standard fully defines the structure of the identification system for other media, the
mapping of non-electrical energy related data items to ID codes needs to be completed
separately.
NOTE EN 13757-1 defines identifiers for metering equipment other than electricity: heat cost allocators, cooling,
heating, gas, cold water and hot water.
2 Normative references
The following referenced documents are indispensable for the application 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.
IEC 60050-300:2001, International Electrotechnical Vocabulary (IEV) – Electrical and
electronic measurements and measuring instruments – Part 311: General terms relating to
measurements – Part 312: General terms relating to electrical measurements – Part 313:
Types of electrical measuring instrument – Part 314: Specific terms according to the type of
instrument
IEC 61000-2-8:2002: Electromagnetic compatibility (EMC) – Part 2-8: Environment – Voltage
dips and short interruptions on public electric power supply systems with statistical
measurement results
IEC 62051:1999, Electricity metering – Glossary of terms

– 8 – 62056-61 © IEC:2006(E)
IEC 62051-1:2004, Electricity metering – Glossary of terms – Part 1: Terms related to data
exchange with metering equipment using DLMS/COSEM
IEC 62053-23:2003, Electricity metering equipment (a.c.) – Particular requirements – Part 23:
Static meters for reactive energy (classes 2 and 3)
IEC 62056-21:2002, Electricity metering – Data exchange for meter reading, tariff and load
control – Part 21: Direct local data exchange
IEC 62056-62 Ed. 2:2006, Electricity metering – Data exchange for meter reading, tariff and
load control – Part 62: Interface classes
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-300,
IEC 62051 and IEC 62051-1 apply.
3.2 Abbreviations
COSEM COmpanion Specification for Energy Metering
IC Interface Class
OBIS OBject Identification System
VZ Billing period counter
4 OBIS structure
4.1 General
OBIS codes identify data items used in energy metering equipment, in a hierarchical structure
using six value groups A to F, see Figure 1.
A B C D E F
IEC  302/02
Figure 1 – OBIS code structure
4.2 Value group A
The value group A defines the media (energy type) to which the metering is related. Non-
media related information is handled as abstract data.
4.3 Value group B
The value group B defines the channel number, i.e. the number of the input of a metering
equipment having several inputs for the measurement of energy of the same or different types
(e.g. in data concentrators, registration units). Data from different sources can thus be
identified. The definitions for this value group are independent from the value group A.
4.4 Value group C
The value group C defines the abstract or physical data items related to the information
source concerned, for example current, voltage, power, volume, temperature. The definitions
depend on the value of the value group A .
Further processing, classification and storage methods are defined by value groups D, E
and F.
62056-61 © IEC:2006(E) – 9 –
For abstract data, value groups D to F provide further classification of data identified by value
groups A to C.
4.5 Value group D
The value group D defines types, or the result of the processing of physical quantities
identified with the value groups A and C, according to various specific algorithms. The
algorithms can deliver energy and demand quantities as well as other physical quantities.
4.6 Value group E
The value group E defines further processing or classification of quantities identified by value
groups A to D.
4.7 Value group F
The value group F defines the storage of data, identified by value groups A to E, according to
different billing periods. Where this is not relevant, this value group can be used for further
classification.
4.8 Manufacturer specific codes
In value groups B, C, D, E and F the following ranges are available for manufacturer-specific
purposes:
• group B: 128…199;
• group C: 128…199, 240;
• group D: 128…254;
• group E: 128.254;
• group F: 128…254;
If any of these value groups contain a value in the manufacturer specific range, then the
whole OBIS code shall be considered as manufacturer specific, and the value of the other
groups does not necessarily carry a meaning defined in this standard or in IEC 62056-62.
In addition, manufacturer specific ranges are defined in Table 14 with A = 0, C = 96 and
Table 16 with A = 1, C = 96.
4.9 Reserved ranges
By default, all codes not allocated are reserved.
4.10 Summary of rules for manufacturer, utility, consortia and country specific codes
Table 1 summarizes the rules for handling manufacturer specific codes defined in 4. 8, ut ilit y
specific codes defined in 5.2, consortia specific codes defined in Table 7 and country specific
codes defined in Table 8.
———————
Administered by the DLMS User Association (see Foreword).

– 10 – 62056-61 © IEC:2006(E)
Table 1 – Rules for manufacturer, utility, consortia and country specific codes
Code type Value group Note
A B C D E F
128…199 x x x x
128…
x x x x
199, 240
Manufacturer specific 0, 1, 4.9 See Note 1
x x 128…254 x x
x x x 128…254 x
x x x x 128…254
Manufacturer specific
0 0…64 96 50…99 0…255 0…255 See Note 2
abstract
Manufacturer
specific, media
1, 4.9 0…64 96 50…99 0…255 0…255 See Note 2
related general
purpose
Utility specific 65…127   See Note 3
Consortia specific See
1…64 93  See Note 4
Table 7
0, 1, 4.9
Country specific See
1…64 94  See Note 5
Table 8
NOTE 1 “x” means any value.
NOTE 2 The range D = 50…99 is available for identifying objects, which are not represented by another defined
code, but need representation on the display as well. If this is not required, the range D = 128…254 should be
used.
NOTE 3 If the value of B is 65…127, the whole OBIS code should be considered as utility specific and the value
of other groups does not necessarily carry a meaning defined neither in IEC 62056-62 nor in this standard.
NOTE 4 The usage of value group E and F are defined in consortia specific documents.
NOTE 5 The usage of value group E and F are defined in country specific documents.

Objects for which this standard defines standard identifiers shall not be re-identified by
manufacturer, utility, consortia or country specific identifiers.
On the other hand, an object previously identified by a manufacturer, utility, consortia or
country specific identifier may receive a standard identifier in the future, if its use is of
common interest for the users of this standard.

62056-61 © IEC:2006(E) – 11 –
5 Value group definitions
5.1 Value group A
The range for value group A is 0 to 15, see Table 2.
Table 2 – Value group A codes
Value group A
0 Abstract objects
1 Electricity related objects
4 Heat cost allocator related objects
5 Cooling related objects
6 Heat related objects
7 Gas related objects
8 Cold water related objects
9 Hot water related objects
All other Reserved
5.2 Value group B
The range for value group B is 1 to 255, see Table 3.
Table 3 – Value group B codes
Value group B
0 No channel specified
1 Channel 1
…
Channel 64
65…127 Utility specific codes
128…199 Manufacturer specific codes
200…255
Reserved
If channel information is not essential, the value 0 shall be assigned.
The range 65…127 is available for utility specific use. If the value of group B is in this range,
the whole OBIS code shall be considered as utility specific and the value of other groups does
not necessarily carry a meaning defined neither in this standard nor in IEC 62056-62.

– 12 – 62056-61 © IEC:2006(E)
5.3 Value group C
The range for value group C is 0 to 255, see Table 4 and Table 5.
5.3.1 Abstract objects
Abstract objects are data items, which are not related to a certain type of physical quantity.
Table 4 – Value group C codes – Abstract objects
Value group C
Abstract objects (A = 0)
a
0…89 Context specific identifiers

93 Consortia specific identifiers (see 5.4.3)
94 Country specific identifiers (see 5.4.4)

96 General service entries (see 5. 7)
97 General error messages (see 5. 7 )
General list objects (see 5. 9)
99 Abstract data profiles (see 5.10)
b
127 Inactive objects
128…199, 240 Manufacturer specific codes
All other Reserved
a
Context specific identifiers identify objects specific to a certain protocol and/or
application. For the COSEM context, the identifiers are defined in IEC 62056-62,
Clause D.1.
b
An inactive object is an object, which is defined and present in a meter, but which
has no assigned functionality.

62056-61 © IEC:2006(E) – 13 –
5.3.2 Electricity related objects
Table 5 – Value group C codes – Electricity
Value group C
Electricity related objects (A = 1)
0 General purpose objects (see 5. 8)
ΣLi Active power+ (QI+QIV) (see also Note 2)
ΣL Active power– (QII+QIII)
i
ΣL Reactive power+ (QI+QII)
i
4 Reactive power– (QIII+QIV)
ΣLi
ΣL Reactive power QI
i
ΣL Reactive power QII
i
ΣL Reactive power QIII
i
ΣL Reactive power QIV
i
ΣL Apparent power+ (QI+QIV) (see also Note 3)
i
ΣL Apparent power– (QII+QIII)
i
a
11 Current : any phase
a
Voltage : any phase
ΣL Power factor (see also Note 4)
i
Supply frequency
a
ΣL Active power (abs(QI+QIV)+(abs(QII+QIII))
I
ΣL Active power (abs(QI+QIV)-abs(QII+QIII))
I
ΣL Active power QI
i
ΣL Active power QII
i
ΣL Active power QIII
i
ΣLi Active power QIV
21 L Active power+ (see also Note 1)
22 L Active power–
23 L Reactive power+
24-30 L etc. (See 4-10)
a
L Current
a
32 L Voltage
33 L Power factor
34 L Supply frequency
35-40 L Active power. etc. (see 15-20)
41 L Active power+
42 Active power–
L2
43 L Reactive power+
44-60 L etc. (see 24-40)
61 L Active power+
62 L Active power–
63 L Reactive power+
64-80 L etc. (see 24-40)
– 14 – 62056-61 © IEC:2006(E)
Table 5 (continued)
Value group C
Electricity related objects (A = 1)
b
81 Angles
82 Unitless quantity (pulses or pieces)
c
83 Transformer and line loss quantities

ΣL power factor– (see also Note 4)
i
85 L Power factor–
86 L Power factor–
87 L Power factor–
ΣL Ampere-squared hours (QI+QII+QIII+QIV)
i
ΣL Volt-squared hours (QI+QII+QIII+QIV)
i
a
91 L current (neutral)
a
L0 voltage (neutral)
Consortia specific identifiers (see 5.4.3)
Country specific identifiers. (see 5.4.4)

96 Electricity-related service entries (see 5.8)
97 Electricity-related error messages (see 5.8)
98 Electricity list (see 5.9)
99 Electricity data profile (see 5.10)
100…127 Reserved
128.199, 240 Manufacturer specific codes
All other Reserved
NOTE 1 L Quantity is the value (to be measured) of a measurement system connected
i
between the phase i and a reference point. In 3-phase 4-wire systems, the reference
point is the neutral. In 3-phase 3-wire systems, the reference point is the phase L .
NOTE 2 ΣL Quantity is the total measurement value across all systems.
i
NOTE 3 If just one apparent energy/demand value is calculated over the four quadrants, C
= 9 will be used.
NOTE 4 Power factor quantities with C = 13, 33, 53, 73 are calculated either as PF =
Active power+ (C = 1, 21, 41, 61) / Apparent power+ (C = 9, 29, 49, 69) or PF = Active
power– (C = 2, 22, 42, 62) / Apparent power– (C = 10, 30, 50, 70).
In the first case, the sign is positive (no sign), it means power factor in the import direction
(PF+).
In the second case, the sign is negative, it means power factor in the export direction (PF–).
Power factor quantities C = 84, 85, 86 and 87 are always calculated as PF– = Active power–
/ Apparent power–. This quantity is the power factor in the export direction; it has no sign.
a
For details of extended codes, see 5.5.3.
b
For details of extended codes, see 5.5.4.
c
For details of extended codes, see 5.5.5.

62056-61 © IEC:2006(E) – 15 –
Export active power Import active power
–+
II I
S
Import
+
reactive
power Q
ϕ
P
I
Export
–
reactive
power
IV
III
IEC  3047/02
NOTE The quadrant definitions are according to IEC 62053-23, Figure C.1.
Figure 2 – Quadrant definitions for active and reactive power
5.4 Value group D
5.4.1 General
The range for value group D is 0 to 255; see Table 6, Table 7 and Table 8.
5.4.2 Electricity related objects
Table 6 – Value group D codes – Electricity
Value group D
Electricity related objects A = 1, C <> 0, 93, 94, 96, 97, 98, 99
0 Billing period average (since last reset)
1 Cumulative minimum 1
2 Cumulative maximum 1
3 Minimum 1
4 Current average 1
5 Last average 1
6 Maximum 1
7 Instantaneous value
8 Time integral 1
9 Time integral 2
10 Time integral 3
11 Cumulative minimum 2
12 Cumulative maximum 2
13 Minimum 2
14 Current average 2
15 Last average 2
16 Maximum 2
17 Time integral 7
18 Time integral 8
– 16 – 62056-61 © IEC:2006(E)
Table 6 (continued)
Value group D
Electricity related objects A = 1, C <> 0, 93, 94, 96, 97, 98, 99
19 Time integral 9
20 Time integral 10
21 Cumulative minimum 3
22 Cumulative maximum 3
23 Minimum 3
24 Current average 3
25 Last average 3
26 Maximum 3
27 Current average 5
28 Current average 6
29 Time integral 5
30 Time integral 6
31 Under limit threshold
32 Under limit occurrence counter
33 Under limit duration
34 Under limit magnitude
35 Over limit threshold
36 Over limit occurrence counter
37 Over limit duration
38 Over limit magnitude
39 Missing threshold
40 Missing occurrence counter
41 Missing duration
42 Missing magnitude
55 Test average
58 Time integral 4
128.254 Manufacturer specific codes
All other Reserved
NOTES
Averaging scheme 1 Controlled by measurement period 1, (see Table 16) a set of registers is calculated
by a metering device (codes 1.6). The typical usage is for billing purposes
Averaging scheme 2 Controlled by measurement period 2, a set of registers is calculated by a metering
device (codes 11.16). The typical usage is for billing purposes
Averaging scheme 3
Controlled by measurement period 3, a set of registers is calculated by a metering
device (codes 21.26). The typical usage is for instantaneous values
Averaging scheme 4 Controlled by measurement period 4, a test average value (code 55) is calculated by
the metering device
Current average 1, 2, 3 See the definition of the “Demand register” interface class in IEC 62056-62.
The value is calculated using measurement period 1, 2 and/or 3 respectively
Last average 1,2,3 See the definition of the “Demand register” interface class in IEC 62056-62.
The value is calculated using measurement period 1, 2 or 3 respectively

62056-61 © IEC:2006(E) – 17 –
Table 6 (continued)
Value group D
Electricity related objects A = 1, C <> 0, 93, 94, 96, 97, 98, 99
Minimum
The smallest of last average values during a billing period, see Table 16
Maximum The largest of last average values during a billing period
Cumulative minimum The cumulative sum of minimum values over all the past billing periods
Cumulative maximum The cumulative sum of maximum values over all the past billing periods
Current average 5
See the definition of the “Demand register” interface class in IEC 62056-62.
The value is calculated using recording interval 1, see Table 16
Current average 6 See the definition of the “Demand register” interface class in IEC 62056-62.
The value is calculated using recording interval 2
Time integral 1 For a current billing period (F = 255): Time integral of the quantity calculated from
the origin (first start of measurement) to the instantaneous time point.
For a historical billing period (F = 0…99): Time integral of the quantity calculated
from the origin to the end of the billing period given by the billing period code
Time integral 2 For a current billing period (F = 255): Time integral of the quantity calculated from
the beginning of the current billing period to the instantaneous time point.
For a historical billing period (F = 0…99): Time integral of the quantity calculated
over the billing period given by the billing period code
Time integral 3 Time integral of the positive difference between the quantity and a prescribed
threshold value
Time integral 4 ("Test Time integral of the quantity calculated over a time specific to the device or
time integral”)
determined by test equipment
Time integral 5
Used as a base for load profile recording: Time integral of the quantity calculated
from the beginning of the current recording interval to the instantaneous time point
for recording period 1
Time integral 6 Used as a base for load profile recording: Time integral of the quantity calculated
from the beginning of the current recording interval to the instantaneous time point
for recording period 2
Time integral 7 Time integral of the quantity calculated from the origin (first start of measurement) up
to the end of the last recording period with recording period 1
Time integral 8 Time integral of the quantity calculated from the origin (first start of measurement) up
to the end of the last recording period with recording period 2
Time integral 9
Time integral of the quantity calculated from the beginning of the current billing
period up to the end of the last recording period with recording period 1
Time integral 10 Time integral of the quantity calculated from the beginning of the current billing
period up to the end of the last recording period with recording period 2
Under limit values
Values under a certain threshold (e.g. dips)
Over limit values Values above a certain threshold (e.g. swells)
Missing values Values considered as missing (e.g. interruptions)

5.4.3 Consortia specific identifiers
Table 7 specifies the use of value group D for consortia specific applications. In this table,
there are no reserved ranges for manufacturer specific codes. The usage of value group E
and F are defined in consortia specific documents.

– 18 – 62056-61 © IEC:2006(E)
Table 7 – Value group D codes – Consortia specific identifiers
Value group D
Consortia specific identifiers (A = 0, C = 93 and A = 1, C = 93)
01 SELMA Consortium
All other Reserved
NOTE 1 Objects that are already identified in this standard must not be re-identified
by consortia specific identifiers.

NOTE 2 The SELMA Consortium is an associated member of the DLMS UA.

5.4.4 Country specific identifiers
Table 8 specifies the use of value group D for country specific applications. Wherever
possible, the phone codes are used. In this table, there are no reserved ranges for
manufacturer specific codes. The usage of value group E and F are defined in country
specific documents.
62056-61 © IEC:2006(E) – 19 –
Table 8 – Value group D codes – Country specific identifiers
Value group D
a
Country specific identifiers (A = 0, C = 94 and A = 1, C = 94)
00 Finnish identifiers
01 USA identifiers
02 Canadian identifiers
07 Russian identifiers
Czech identifiers
11 Bulgarian identifiers
12 Croatian identifiers
Irish identifiers
14 Israeli identifiers
15 Ukraine identifiers
16 Yugoslavian identifiers
27 South African identifiers
30 Greek identifiers
31 Dutch identifiers
32 Belgian identifiers
33 French identifiers
34 Spanish identifiers
Portuguese identifiers
36 Hungarian identifiers
38 Slovenian identifiers
Italian identifiers
40 Romanian identifiers
41 Swiss identifiers
42 Slovakian identifiers
43 Austrian identifiers
44 United Kingdom identifiers
45 Danish identifiers
Swedish identifiers
47 Norwegian identifiers
48 Polish identifiers
49 German identifiers
55 Brazilian identifiers
61 Australian identifiers
62 Indonesian identifiers
New Zealand identifiers
65 Singapore identifiers
81 Japanese identifiers
Chinese identifiers
90 Turkish identifiers
91 Indian identifiers
All other
Reserved
NOTE Objects that are already identified in this standard must not be re-identified by

country specific identifiers.
– 20 – 62056-61 © IEC:2006(E)
5.4.5 Use of value group D for identification of other objects
For identifiers of abstract objects see 5.7 .
For identifiers of electricity related general-purpose objects see 5. 8 .
5.5 Value group E
5.5.1 General
The range for value group E is 0 to 255. It can be used for identifying further classification or
processing of values defined by value groups A to D, as specified in the paragraphs below.
The various classifications and processing methods are exclusive.
5.5.2 Identification of tariff rates
Table 9 shows the use of value group E for identification of tariff rates.
Table 9 – Value group E codes – Tariff rates
Value group E
Electricity related objects (A = 1)
0 Total
1 Rate 1
2 Rate 2
3 Rate 3
…
...
9 Rate 9
… …
63 Rate 63
128…254 Manufacturer specific codes
All other Reserved
5.5.3 Identification of harmonics
Table 10 shows the use of value group E for the identification of harmonics of instantaneous
values of voltage, current or active power.

62056-61 © IEC:2006(E) – 21 –
Table 10 – Value group E codes – Harmonics
Value group E
Electricity related objects (A = 1), measurement of harmonics of voltage (C = 12, 32, 52, 72, 92), current
(C = 11, 31, 51, 71, 91) or active power (C = 15, 35, 55, 75), D = 7 or D = 24
0 Total (fundamental + all harmonics)
st
1 1 harmonic (fundamental)
nd
2 2 harmonic
th
… n harmonic
th
120 120 harmonic
a
124 Total Harmonic Distortion (THD)
b
125 Total Demand Distortion (TDD)
c
All harmonics
d
127 All harmonics to nominal value ratio

128…254
Manufacturer specific codes
All other Reserved
a
THD is calculated as the ratio of the square root of the sum of the squares of each harmonic to the value
of the fundamental quantity, expressed as a percent of the value of the fundamental.
b
TDD is calculated as the ratio of the square root of the sum of the squares of each harmonic to the
maximum value of the fundamental quantity, expressed as percent of the maximum value of the
fundamental.
c
Calculated as the square root of the sum of the squares of each harmonic.
d
This is calculated as ratio of the square root of the sum of the squares of each harmonic, to the nominal
value of the fundamental quantity, expressed as percent of the nominal value of the fundamental.

5.5.4 Identification of phase angles
The following table shows the use of value group E for identification of phase angles.
Table 11 – Value group E codes – Extended phase angle measurement
Value group E
Electricity related objects (A = 1); angle measurement (C = 81; D = 7)
Angle U(L1) U(L2) U(L3) I(L1) I(L2) I(L3) I(L0) <= From
U(L1) (00) 01 02 04 05 06 07
U(L2) 10 (11) 12 14 15 16 17
U(L3) 20 21 (22) 24 25 26 27
I(L1) 40 41 42 (44) 45 46 47
I(L2) 50 51 52 54 (55) 56 57
I(L3) 60 61 62 64 65 (66) 67
I(L0) 70 71 72 74 75 76 (77)
^ To (reference)
– 22 – 62056-61 © IEC:2006(E)
5.5.5 Identification of transformer and line loss quantities
Table 12 shows the meaning of value group E for the identification of transformer and line
loss quantities. The use of value group D shall be according to Table 6, the use of value
group F shall be according to Table A.2. For these quantities, no tarification is available.
The model of the line and the transformer used for loss calculation is shown in Figure 3.

Transformer
R X
Cu s
Np : Ns
X
R
m Fe
IEC  2110/06
Key
- R Line resistance losses, OBIS code 1.x.0.10.2.VZ
Cu
- X Line reactance losses, OBIS code 1.x.0.10.3.VZ
s
- X Transformer magnetic losses, OBIS code 1.x.0.10.0.VZ
m
- R Transformer iron losses, OBIS code 1.x.0.10.1.VZ
Fe
NOTE Serial elements of the transformer are normally low compared to that of the line, therefore they are not
considered here.
Figure 3 – Model of the line and the transformer for calculation of loss quantities

62056-61 © IEC:2006(E) – 23 –
Table 12 – Value group E codes – Transformer and line loss quantities
Value group E
Electricity related objects (A = 1); transformer and line loss quantities (C = 83)
E= Quantity Formula Quadrant / comment
On Load Active, positive
1 ΣL Active line losses+ QI+QIV
i
OLA+ = (CuA +) + (CuA +) + (CuA +)
1 2 3
On Load Active, negative
2 ΣL Active line losses– QII+QIII
i
OLA– = (CuA –) + (CuA –) + (CuA –)
...