SIST EN 62656-3:2015

Standardized product ontology register and transfer by spreadsheets - Part 3: Interface for Common Information Model (IEC 62656-3:2015)

IEC 62656-3:2015 defines a formal mapping between the IEC 62656 and meta-model for CIM in order to import the CIM ontology into the IEC CDD, and to ensure the interoperability of ontologies of two standards, or even among a wider spectrum of standards. For the basis of the mapping from CIM to the data model defined in IEC 62656-1, the UML representation of CIM is referenced.

Standardisierte Übertragung und Registrierung von Ontologien für Produkte mittels Tabellen - Teil 3: Schnittstellen für das allgemeine Informationsmodell (IEC 62656-3:2015)

Enregistrement d'ontologie de produits normalisés et transfert par tableurs - Partie 3: Interface pour un modèle d'information commun (IEC 62656-3:2015)

L'IEC 62656-3:2015 définit une mise en correspondance formelle entre l'IEC 62656 et le métamodèle pour CIM afin d'importer l'ontologie CIM dans le CDD de l'IEC et assurer l'interopérabilité des ontologies des deux normes, ou même parmi un plus large spectre de normes. Pour la base de la mise en correspondance du CIM vers le modèle de données défini dans l'IEC 62656-1, il est fait référence à la représentation UML du CIM.

Register ontologije standardiziranih izdelkov in prenos prek razpredelnic - 3. del: Vmesnik za splošni informacijski model (IEC 62656-3:2015)

General Information

• Status: Published
• Publication Date: 10-Jun-2015
• ICS: 01.040.01 - Generalities. Terminology. Standardization. Documentation (Vocabularies)
• ICS: 01.110 - Technical product documentation
• Technical Committee: EDO - Documentation and graphical symbols
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 14-May-2015
• Due Date: 19-Jul-2015
• Completion Date: 11-Jun-2015
• Ref Project: EN 62656-3:2015 - Standardized product ontology register and transfer by spreadsheets - Part 3: Interface for Common Information Model

Overview

EN 62656-3:2015 (IEC 62656-3:2015) defines a formal interface between the Standardized Product Ontology Register (IEC 62656) and the Common Information Model (CIM). Its primary purpose is to provide a repeatable mapping that lets implementers import CIM ontology elements into the IEC Common Data Dictionary (IEC CDD) and ensure interoperability between product ontologies and CIM-based information models. The standard references the UML representation of CIM as the basis for the transformation to the IEC 62656 data model.

Key topics and technical requirements

• Formal mapping rules between CIM and IEC 62656 (Part 1 data model), using CIM's UML representation as the source of semantics.
• Transformation rules for major model constructs:
  • CIM classes (naming, description, generalization/specialization)
  • Class attributes (names, native attributes, types, descriptions)
  • Associations and association ends (structure and transformation rules)
  • Enumerations and enumeration attributes
  • Data types (CIM basic and named data types)
  • Packages and how CIM packages are represented in the IEC POM model
• IEC 62656-specific representations: how CIM classes, properties, data types, enumerations and relations are represented in IEC 62656 format (codes, versioning, preferred names, definitions).
• XML schema provisions for exporting or updating CIM instances inside the IEC CDD (XML schema for updated CIM instances).
• Normative cross-references to related standards that affect implementation, e.g. IEC 61360, IEC 61970/61968 (CIM series), IEC 62656‑1 (logical structure for data parcels), ISO 8601, ISO 639‑1.

Applications and who uses it

• Ensures ontology interoperability between product catalogs and energy-domain information systems that use CIM.
• Used by:
  • Standards bodies and ontology working groups aligning multiple semantic models.
  • Utility and energy software vendors integrating product metadata into EMS/SCADA and market systems.
  • System integrators and data architects performing model transformation, import/export and harmonization.
  • Product information managers and technical documentation teams using IEC CDD to publish standardized product ontologies.
• Practical uses include importing CIM class/property definitions into IEC CDD, synchronizing product ontology registers, and enabling consistent data interchange across tools that rely on spreadsheet-based product ontology transfer.

Related standards

• IEC 62656-1 (Part 1: logical structure for data parcels)
• IEC 61970 / IEC 61968 (CIM base and extensions)
• IEC 61360 (data element types and classification)
• IEC 62325 (CIM for markets)
• ISO 8601, ISO 639-1

Keywords: EN 62656-3:2015, IEC 62656-3:2015, Common Information Model, CIM, IEC CDD, product ontology, ontology mapping, UML, XML schema, interoperability.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2015
Register ontologije standardiziranih izdelkov in prenos prek razpredelnic - 3. del:
Vmesnik za splošni informacijski model (IEC 62656-3:2015)
Standardized product ontology register and transfer by spreadsheets - Part 3: Interface
for Common Information Model (IEC 62656-3:2015)
Standardisierte Übertragung und Registrierung von Ontologien für Produkte mittels
Tabellen - Teil 3: Schnittstellen für das allgemeine Informationsmodell (IEC 62656-
3:2015)
Enregistrement d'ontologie de produits normalisés et transfert par tableurs - Partie 3:
Interface pour un modèle d'information commun (IEC 62656-3:2015)
Ta slovenski standard je istoveten z: EN 62656-3:2015
ICS:
01.040.01 Splošno. Terminologija. Generalities. Terminology.
Standardizacija. Standardization.
Dokumentacija (Slovarji) Documentation
(Vocabularies)
01.110 7HKQLþQDGRNXPHQWDFLMD]D Technical product
L]GHONH documentation
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62656-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2015
ICS 01.040.01; 01.110
English Version
Standardized product ontology register and transfer by
spreadsheets - Part 3: Interface for Common Information Model
(IEC 62656-3:2015)
Enregistrement d'ontologie de produits normalisés et Standardisierte Übertragung und Registrierung von
transfert par tableurs - Partie 3: Interface pour un modèle Ontologien für Produkte mittels Tabellen - Teil 3:
d'information commun Schnittstellen für das allgemeine Informationsmodell
(IEC 62656-3:2015) (IEC 62656-3:2015)
This European Standard was approved by CENELEC on 2015-03-31. 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 62656-3:2015 E
Foreword
The text of document 3D/234/FDIS, future edition 1 of IEC 62656-3, prepared by IEC/SC 3D "Product
properties and classes and their identification", of IEC/TC 3 "Information structures, documentation and
graphical symbols", was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC
as EN 62656-3.
The following dates were fixed:
• latest date by which the document has to be
(dop) 2015-12-31
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national
(dow) 2018-03-31
standards conflicting with the
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.
Endorsement notice
The text of the International Standard IEC 62656-3:2015 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 62656-3:2015
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year

IEC 61360-1 2009 Standard data elements types with EN 61360-1 2010
associated classification scheme for electric
items -- Part 1: Definitions - Principles and
methods
IEC 61360-4 -  Standard data element types with EN 61360-4 -
associated classification scheme for electric
components -- Part 4: IEC reference
collection of standard data element types
and component classes
- -  +corrigendum Dec. -
IEC 61968-1 2003 Application integration at electric utilities - EN 61968-1 2004
System interfaces for distribution
management -- Part 1: Interface architecture
and general requirements
IEC 61968-11 2010 Application integration at electric utilities - EN 61968-11 2010
System interfaces for distribution
management -- Part 11: Common
Information Model (CIM) extensions for
distribution
IEC 61970-1 2005 Energy management system application EN 61970-1 2006
program interface (EMS-API) -- Part 1:
Guidelines and general requirements
IEC 61970-301 2013 Energy management system application EN 61970-301 2014
program interface (EMS-API) -- Part 301:
Common information model (CIM) base
IEC 61970-501 2006 Energy management system application EN 61970-501 2006
program interface (EMS-API) -- Part 501:
Common Information Model Resource
Description Framework (CIM RDF) schema
IEC 62325-301 2014 Framework for energy market EN 62325-301 2014
communications -- Part 301: Common
Information Model (CIM) extensions for
markets
IEC 62656-1 2014 Standardized product ontology register and EN 62656-1 2015
transfer by spreadsheets -- Part 1: Logical
structure for data parcels
ISO 639-1 2002 Codes for the representation of names of - -
languages_- Part_1: Alpha-2 code

ISO 8601 2004 Data elements and interchange formats - - -
Information interchange - Representation of
dates and times
IEC/TS 61970-2 2004 Energy management system application CLC/TS 61970-2 2005
program interface (EMS-API) -- Part 2:
Glossary
ISO/IEC directives 2013 Procedures specific to IEC - -
Supplement
IEC 62656-3 ®
Edition 1.0 2015-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Standardized product ontology register and transfer by spreadsheets –

Part 3: Interface for Common Information Model

Enregistrement d’ontologie de produits normalisés et transfert par tableurs –

Partie 3: Interface pour un modèle d’information commun

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 01.040.01; 01.110 ISBN 978-2-8322-2258-4

– 2 – IEC 62656-3:2015 © IEC 2015

CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms, definitions and abbreviations . 11
3.1 Terms and definitions . 11
3.2 Abbreviations . 13
4 Generic rules and principles for the design of CIM interface . 13
4.1 Comparative analysis of the structures and functionalities of POM and CIM . 13
4.2 CIM standard series . 14
5 Rules of transformation from CIM to POM . 15
5.1 General rules . 15
5.2 CIM Class . 16
5.2.1 General . 16
5.2.2 Name . 17
5.2.3 Description . 17
5.2.4 Generalization-specialization . 17
5.3 CIM class attributes . 18
5.3.1 General . 18
5.3.2 Name . 18
5.3.3 Native attribute . 18
5.3.4 Type . 18
5.3.5 Description . 18
5.4 CIM association . 19
5.4.1 General . 19
5.4.2 CIM association end structure. 19
5.4.3 General transformation rule for association . 20
5.4.4 General transformation rule for association end . 20
5.5 CIM Enumeration class . 24
5.5.1 General . 24
5.5.2 Name . 25
5.5.3 Description . 25
5.6 CIM Enumeration Attribute . 25
5.6.1 General . 25
5.6.2 Name . 25
5.6.3 Description . 25
5.7 Data type . 26
5.7.1 CIM basic datatype . 26
5.7.2 CIM named data types . 26
5.8 Package. 28
5.8.1 General . 28
5.8.2 POM relation object . 30
5.8.3 CIM packages described in POM relation. 31
6 CIM description in IEC 62656 format . 33
6.1 General . 33
6.2 Class . 34

IEC 62656-3:2015 © IEC 2015 – 3 –
6.2.1 General . 34
6.2.2 Code . 34
6.2.3 Version number . 34
6.2.4 Revision number . 35
6.2.5 Date of original definition . 35
6.2.6 Date of current version . 35
6.2.7 Preferred name . 35
6.2.8 Short name . 36
6.2.9 Definition . 36
6.2.10 Note . 36
6.2.11 Superclass . 36
6.2.12 Class type . 37
6.2.13 Alternate ID . 37
6.2.14 CIM package . 37
6.2.15 Applicable properties . 38
6.3 Property . 38
6.3.1 General . 38
6.3.2 Property data element type . 38
6.3.3 Definition class . 38
6.3.4 Data type . 39
6.3.5 Applicable relations . 39
6.3.6 Condition . 39
6.3.7 Unit in text . 39
6.3.8 Alternative units . 40
6.4 Data type . 40
6.4.1 General . 40
6.4.2 Definition class . 40
6.4.3 Unit in text . 40
6.4.4 Alternative units . 41
6.4.5 Data type . 41
6.5 Enumeration . 41
6.5.1 General . 41
6.5.2 Definition class . 41
6.5.3 Enumerated list of terms . 41
6.5.4 Enumerate code list . 42
6.6 Term meta-class . 42
6.6.1 General . 42
6.6.2 Preferred letter symbol in text . 42
6.7 Relation . 42
6.7.1 General . 42
6.7.2 Relation type . 43
6.7.3 Domain of the relation . 43
6.7.4 Domain of the function . 43
6.7.5 Codomain of the function . 43
6.7.6 Domain element type . 44
6.7.7 Role of the relation . 44
7 XML schema for updated CIM instances in IEC CDD . 44
7.1 General . 44
7.2 Principles . 45

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8 Version control mechanism in POM for the parcellized CIM . 46
Annex A (normative) Mapping rules from CIM to POM – Mapping rules described in
POM relation meta-class . 47
Annex B (normative) CIM in IEC 62656 format – Normative meta-properties of the
CIM in IEC 62656 model . 56
Annex C (informative) XML Schema for parcellized CIM . 63
C.1 XML schema for POM models . 63
C.2 XML schema for a class . 63
C.2.1 General . 63
C.2.2 class.xsd . 63
C.2.3 class1.xsd . 64
C.2.4 class2.xsd . 64
C.2.5 class3.xsd . 64
C.2.6 class4.xsd . 65
C.3 XML schema for a property . 65
C.3.1 General . 65
C.3.2 property.xsd . 65
C.3.3 property1.xsd . 66
C.3.4 property2.xsd . 66
C.3.5 property3.xsd . 67
C.3.6 property4.xsd . 67
C.4 XML schema for a property derived from an association end . 68
C.4.1 General . 68
C.4.2 association.xsd . 68
C.4.3 association1.xsd . 68
C.4.4 association2.xsd . 69
C.4.5 association3.xsd . 70
C.4.6 association4.xsd . 70
C.5 XML schema for a data type . 70
C.5.1 General . 70
C.5.2 datatype.xsd . 71
C.5.3 datatype1.xsd . 71
C.5.4 datatype2.xsd . 71
C.5.5 datatype3.xsd . 72
C.5.6 datatype4.xsd . 72
C.6 XML schema for an enumeration and its enumerators . 73
C.6.1 General . 73
C.6.2 enum_term.xsd . 73
C.6.3 enum_term1.xsd . 73
C.6.4 enum_term2.xsd . 74
C.6.5 enum_term3.xsd . 74
C.6.6 enum_term4.xsd . 75
C.7 XML schema for a CIM package. 75
C.7.1 General . 75
C.7.2 package.xsd example . 75
C.7.3 package1.xsd example . 76
C.7.4 package2.xsd example . 76
C.7.5 package3.xsd example . 76
C.7.6 package4.xsd example . 77

IEC 62656-3:2015 © IEC 2015 – 5 –
Annex D (informative) XML examples for parcellized CIM . 78
D.1 XML example for a CIM class with extended attributes . 78
D.2 XML example for a property with extended attributes . 78
D.3 XML example for a CIM association and aggregation with extended
attributes . 79
D.4 XML example for a CIM data type with extended attributes . 81
D.5 XML example for a CIM enumeration and its enumerators with extended
attributes . 81
D.6 XML example for a CIM package with extended attributes . 82
Annex E (informative) Property reference between CIM and IEC CDD – “Power
transformer” definitions in both IEC CDD and CIM . 84
Annex F (informative) Four Layer architecture of UML and POM – Four layer
architecture of MOF (meta object facility) . 87
Annex G (informative) POM Relation usage in IEC 62656-3 . 88
G.1 General . 88
G.2 Meta-model mapping rules between UML and POM(M2) . 88
G.3 UML Association(M1) . 88
G.4 Model level relation definition(M1) . 88
Annex H (informative) Parcellized CIM files access – URL for the parcellized CIM files . 89
Bibliography . 90

Figure 1 – CIM generalization example (from Figure 2 of IEC 61970-301:2013) . 17
Figure 2 – Simple association example (from Figure 3 of IEC 61970-301:2013) . 21
Figure 3 – Aggregation example (from Figure 4 of IEC 61970-301:2013) . 21
Figure 4 – Property data element type definition . 23
Figure 5 – CIM package example (from Figure 1 of IEC 61970-301:2013) . 30
Figure 6 – POM relation model explanation in UML . 31
Figure 7 – Class instances of parcellized CIM . 45
Figure 8 – Conceptual reference mechanism with ID in POM . 46

Table 1 – Mapping of CIM objects and POM objects . 15
Table 2 – Correspondence between a CIM class in UML and a POM class . 17
Table 3 – Mapping of CIM class attribute and POM property . 18
Table 4 – CIM association end structure . 19
Table 5 –CIM associations defined as POM relations . 20
Table 6 – Mapping of CIM association end and POM property . 21
Table 7 – CIM association ends described as POM properties . 22
Table 8 – Mapping of CIM enumeration and POM enumeration . 25
Table 9 – Mapping of CIM enumeration attribute and POM term . 25
Table 10 – Mapping of CIM basic data type and POM simple data type . 26
Table 11 – Mapping of CIM data type and a named data type in POM . 27
Table 12 – Mapping of CIM package and POM relation . 29
Table 13 – CIM package described as POM relation . 32
Table A.1 – Mapping rule from CIM class to POM class . 48
Table A.2 – Mapping rule from CIM class attribute to POM property . 49
Table A.3 – Mapping rule from CIM association to POM relation . 50

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Table A.4 – Mapping rule from CIM association end to POM property . 51
Table A.5 – Mapping rule between CIM enumeration and POM enumeration . 52
Table A.6 – Mapping rule between CIM enumeration attribute and POM term . 52
Table A.7 – Mapping rule between CIM data type and POM data type . 53
Table A.8 – Mapping rule between CIM Package and POM relation . 54
Table A.9 – Mapping rule from POM property to CIM aggregation/association/class
attribute . 55
Table B.1 – Meta-properties for class meta-class . 57
Table B.2 – Meta-properties for property meta-class . 58
Table B.3 –Meta-properties for datatype meta-class . 59
Table B.4 – Meta-properties for enumeration meta-class . 60
Table B.5 – Meta-properties for term meta-class . 61
Table B.6 – Meta-properties for relation meta-class . 62
Table C.1 – POM models and XML schemas. 63
Table E.1 – Native properties of Power transformer class in the IEC CDD . 85
Table E.2 – Native properties of Power transformer class in IEC 61970-301:2013 . 86

IEC 62656-3:2015 © IEC 2015 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
STANDARDIZED PRODUCT ONTOLOGY REGISTER
AND TRANSFER BY SPREADSHEETS –

Part 3: Interface for Common Information Model

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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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.
International Standard IEC 62656-3 has been prepared by subcommittee 3D, Product
properties and classes and their identification, of IEC technical committee 3: Information
structures, documentation and graphical symbols.
The text of this standard is based on the following documents:
FDIS Report on voting
3D/234/FDIS 3D/245/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.

– 8 – IEC 62656-3:2015 © IEC 2015

A list of all parts in the IEC 62656 series, published under the general title Standardized
product ontology register and transfer by spreadsheets, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website 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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
IEC 62656-3:2015 © IEC 2015 – 9 –
INTRODUCTION
The IEC 62656 series, Standardized product ontology register and transfer by spreadsheets is
a series of International standards that collectively define the methods for transferring and
registering the ontologies of various products and services to and from the ontology registries
and applications based on IEC 61360 / ISO13584 common data dictionary model. The IEC
common data dictionary, or IEC CDD for short, is one of such registries maintained online as
an IEC 61360-4 International Standard based on IEC database procedure stipulated in
ISO/IEC Directives Supplement – Procedures specific to IEC. The IEC CDD is a cross-domain
data dictionary covering all electro-technical products and services, maintained and updated
through a database administered by IEC Central Office.
The common information model originally defined in IEC 61968 and IEC 61970 series of
standards, often called by its short name “CIM” provides a standard way to represent all the
major objects in an electric utility enterprise typically needed to model the operational aspects of a
utility. This model includes public classes and attributes for these objects, as well as the relationships
between them. It is known as an information model for energy management system (EMS) of
power grids and currently is recognized as a standard ontology model for smart grids. An
ontology specification conformant to the CIM data model is available in UML format according
to IEC 61970-301, and in RDF format according to IEC 61970-501.
The IEC 62656 series consists of the following parts, under the general title Standardized
product ontology transfer and register by spreadsheets:
– Part 1: Logical structure for data parcels;
– Part 2: Application guide for use with the IEC common data dictionary (CDD);
– Part 3: Interface for common information model.

– 10 – IEC 62656-3:2015 © IEC 2015

STANDARDIZED PRODUCT ONTOLOGY REGISTER
AND TRANSFER BY SPREADSHEETS –

Part 3: Interface for Common Information Model

1 Scope
This part of IEC 62656 specifies an interface between IEC 62656 series and meta-model for
CIM originally defined in IEC 61968 and IEC 61970 series of standards. The current CIM
includes IEC 62325 series and the interface specified in this part of IEC 62656 also applies to
the model defined in IEC 62325-301:2014. More specifically, this standard defines a formal
mapping between the IEC 62656 and meta-model for CIM in order to import the CIM ontology
into the IEC CDD, and to ensure the interoperability of ontologies of two standards, or even
among a wider spectrum of standards. For the basis of the mapping from CIM to the data
model defined in IEC 62656-1, the UML representation of CIM is referenced.
As a result of the interface specification available from this part of IEC 62656, the smart grid
ontology defined in CIM becomes accessible and interoperable in the midst of ontology pieces
originating in other ontology standards, encompassing material, environmental, and
mechanical, and logistic domains of information. In addition, the specification may also cover
the lifecycle of products.
This part of IEC 62656 also defines methods for transforming the IEC CDD content into the
format defined in IEC 61968 and IEC 61970 series. However, this standard does not intend
any standardization of the elements defined in IEC CDD as part of the CIM ontology, for all
the definitions of IEC CDD are already part of an acknowledged horizontal International
Standard known as IEC 61360-4-DB. Rather it makes the pieces of information stored in IEC
CDD available for further standardization or customization in power electric domains or more
specific user communities as a basic resource, in particular for the purpose of extending the
CIM series of standards.
The data model of this part is based on IEC 62656-1 which specifies the logical structure for a
data parcel, or just simply “parcel,” that is a short name for the medium of registering or
transferring of product ontology. Such a parcel may be typically implemented in a leaf of a
spreadsheet. The data model built on a set of parcels is called “parcellized ontology model”,
which is often abbreviated as “POM” in the remainder of this document.
This part of IEC 62656 specifies:
• the mapping rules and principles for importing CIM UML objects into POM;
• the syntactic and semantic requirements on the parcellized CIM objects;
• the piecewise version control mechanism in POM for the parcellized CIM objects.
The following items are outside the scope of this part of IEC 62656:
• definition of the interface between CIM UML and CIM RDF;
• specification of syntactic and semantic requirements on CIM UML;
• specification of syntactic and semantic requirements on CIM RDF.
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

IEC 62656-3:2015 © IEC 2015 – 11 –
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 62656-1:2014, Standardized product ontology register and transfer by spreadsheets –
Part 1: Logical structure for data parcels
IEC 61360-1:2009, Standard data elements types with associated classification scheme for
electric components – Part 1: Definitions – Principles and methods
IEC 61360-4, Standard data element types with associated classification scheme for electric
components – Part 4: IEC reference collection of standard data element types, component
classes and terms, available from
IEC 61968-1:2003, System interfaces for distribution management – Part 1: Interface
architecture and general requirements
IEC 61968-11:2010, System interfaces for distribution management – Part 11: Common
information model (CIM) extensions for distribution
IEC 61970-1:2005, Energy management system application program interface (EMS-API) –
Part 1: Guidelines and general requirements
IEC 61970-2:2004, Energy management system application program interface (EMS-API) –
Part 2: Glossary
IEC 61970-301:2013, Energy management system application program interface (EMS-API) –
Part 301: Common Information Model(CIM) base
IEC 61970-501:2006, Energy management system application program interface(EMS-API) –
Part 501: Common Information Model Resource Description Framework(CIM RDF) schema
IEC 62325-301:2014, Framework for energy market communications – Part 301: Common
information model (CIM) extensions for markets
ISO 639-1:2002, Codes for the representation of names of languages – Part 1: Alpha-2 code
ISO 8601:2004, Data elements and interchange formats – Information interchange –
Representation of dates and times
ISO/IEC Directives Supplement:2013, Procedures specific to IEC
3 Terms, definitions and abbrev
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