EN 60870-6-702:2014
(Main)Telecontrol equipment and systems - Part 6-702: Telecontrol protocols compatible with ISO standards and ITU-T recommendations - Functional profile for providing the TASE.2 application service in end systems
Telecontrol equipment and systems - Part 6-702: Telecontrol protocols compatible with ISO standards and ITU-T recommendations - Functional profile for providing the TASE.2 application service in end systems
IEC 60870-6-702:2014 is a functional profile (FP) and defines the provision of the TASE.2 communications services between two control centre end systems. It is supported by the transport services implemented in accordance with transport-profiles defined for the type of network that interconnects the control centre end systems. The main changes with respect to the previous edition are listed below: - certain objects were moved from being normative to informative; - certain TASE.2 conformance blocks have been made out-of-scope. These changes were made in order to remove TASE.2 blocks that were seldom used and whose capabilities are typically implemented by some other means besides TASE.2. This was done to promote interoperability of implementations from an application perspective.
Fernwirkeinrichtungen und -systeme - Teil 6-702: Fernwirkprotokolle, die mit ISO-Normen und ITU-T-Empfehlungen kompatibel sind - Funktionsprofil für den TASE.2-Anwendungsdienst in Endsystemen
Matériels et systèmes de téléconduite - Partie 6-702: Protocoles de téléconduite compatibles avec les normes ISO et les recommandations de l'UIT-T - Profil fonctionnel pour fournir le service d'application TASE.2 dans les systèmes finals
L'IEC 60870-6-702:2014 est un profil fonctionnel (PF) et définit la prestation des services de communication TASE.2 entre deux systèmes finals de centre de conduite. Les services de transport, mis en place conformément aux profils de transport définis pour le type de réseau reliant les systèmes finals des centres de conduite, prennent en charge ce profil. Les principales modifications par rapport à l'édition précédente sont énumérées ci-dessous: - certains objets qui avaient une valeur normative ont désormais une valeur informative; - certains blocs de conformité TASE.2 ont été retirés du domaine d'application. Ces modifications ont été apportées afin de retirer les blocs TASE.2 qui étaient rarement utilisés dont les capacités sont généralement mises en oeuvre par d'autres moyens que le TASE.2. Ceci a été réalisé pour favoriser l'interopérabilité des applications du point de vue d'une application.
Oprema in sistemi za daljinsko vodenje - 6-702. del: Protokoli daljinskega vodenja, združljivi s standardi ISO in priporočili ITU-T - Funkcijski profil za zagotavljanje aplikacijskih storitev TASE.2 v končnih sistemih (IEC 60870-6-702:2014)
Ta del standarda IEC 60870 je funkcijski profil (FP) in določa zagotavljanje komunikacijskih storitev TASE.2 med dvema končnima sistemoma nadzornega centra. Podpirajo ga transportne storitve, ki se izvajajo v skladu s transportnimi profili, definiranimi za tip omrežja, ki povezuje končne sisteme nadzornega centra. To je prikazano na sliki 1.
Ta FP določa tudi zagotavljanje storitve predstavitve in seje načina povezave OSI med končnimi sistemi.
ISO/ISP 14226 določa profile AMM11 za MMS. Dela standarda ISO/ISP 14226, ki pokrivata profil, uporabljen kot osnova za ta FP, sta ISO/ISP 14226-1 in ISO/ISP 14226-2.
Ta FP je čim bolj usklajen s standardom ISO/ISP 14226 in vzdržuje to združljivost s sklicevanjem. Poleg standarda ISO/ISP 14226 veljajo tudi zahteve TASE.2.
Te zahteve so določene v tem FP-ju.
General Information
- Status
- Published
- Publication Date
- 02-Oct-2014
- Withdrawal Date
- 18-Aug-2017
- Technical Committee
- CLC/TC 57 - Power systems management and associated information exchange
- Drafting Committee
- IEC/TC 57 - IEC_TC_57
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 05-Jan-2026
- Completion Date
- 10-Feb-2026
Relations
- Effective Date
- 29-Jan-2023
- Effective Date
- 10-Feb-2026
- Effective Date
- 10-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
Overview - EN 60870-6-702:2014 (TASE.2 functional profile)
EN 60870-6-702:2014 (IEC 60870-6-702:2014) is a functional profile that specifies how to provide the TASE.2 (Telecontrol Application Service Element 2) application service between two control‑centre end systems. It defines the protocol stack applicability and conformance requirements for telecontrol communications used in power systems management and associated information exchange. The profile is intended to be used together with transport‑profiles appropriate to the network interconnecting control centre end systems.
The 2014 edition supersedes the 1998 edition. Key editorial changes include moving some objects from normative to informative status and removing rarely used TASE.2 conformance blocks to improve application‑level interoperability.
Key topics and technical requirements
- Scope of service: Defines provision of TASE.2 services in end systems - client/server capabilities, association management and object models for telecontrol.
- Profile protocol stacks: Specifies upper‑layer (TASE.2 / MMS / ACSE / Presentation / Session) and lower‑layer transport dependencies.
- Conformance and PICS: Contains conformance requirements, Protocol Implementation Conformance Statements (PICS) and ISPICS requirement lists (Annex A) to support testability and certification.
- MMS / ACSE / Presentation / Session specifics: Lists required MMS PDUs and MMS-related parameter handling, ACSE services, and presentation/session requirements that TASE.2 implementations must support.
- Object models and services: Coverage includes data values, data sets, transfer sets, event enrollment/conditions, program invocation, file and journal management, access control and operator communication (as indicated in the annex tables).
- Interoperability focus: Changes in this edition intentionally remove seldom‑used conformance blocks and shift some normative items to informative to promote consistent multi‑vendor interoperability.
- Security references: The standard references related security profiles (for example IEC/TS 62351‑4) and underlying transport considerations.
Applications and who uses it
- Intended users: SCADA/telecontrol system vendors, power system control centre integrators, utilities (transmission and distribution control centres), test laboratories, and certificating bodies.
- Practical applications: Inter‑control‑centre data exchange, inter‑utility telecontrol links, secure data and event synchronization between control centres, operator and programmatic access to remote resources using standardized TASE.2 services.
- Why adopt it: Ensures predictable behavior of TASE.2 services across vendors, reduces integration costs, and supports standardized testing and conformance.
Related standards
- IEC/EN 60870‑6‑503 (TASE.2 services and protocol)
- IEC/TS 62351‑4 (data and communications security for MMS profiles)
- ISO/IEC MMS and OSI protocol specifications referenced (MMS, ACSE, Presentation, Session) and RFC 2126 (ISO transport on TCP / ITOT)
Keywords: EN 60870-6-702:2014, IEC 60870‑6‑702, TASE.2, telecontrol protocols, telecontrol equipment, control centre end systems, MMS, SCADA interoperability, telemetry standards.
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Frequently Asked Questions
EN 60870-6-702:2014 is a standard published by CLC. Its full title is "Telecontrol equipment and systems - Part 6-702: Telecontrol protocols compatible with ISO standards and ITU-T recommendations - Functional profile for providing the TASE.2 application service in end systems". This standard covers: IEC 60870-6-702:2014 is a functional profile (FP) and defines the provision of the TASE.2 communications services between two control centre end systems. It is supported by the transport services implemented in accordance with transport-profiles defined for the type of network that interconnects the control centre end systems. The main changes with respect to the previous edition are listed below: - certain objects were moved from being normative to informative; - certain TASE.2 conformance blocks have been made out-of-scope. These changes were made in order to remove TASE.2 blocks that were seldom used and whose capabilities are typically implemented by some other means besides TASE.2. This was done to promote interoperability of implementations from an application perspective.
IEC 60870-6-702:2014 is a functional profile (FP) and defines the provision of the TASE.2 communications services between two control centre end systems. It is supported by the transport services implemented in accordance with transport-profiles defined for the type of network that interconnects the control centre end systems. The main changes with respect to the previous edition are listed below: - certain objects were moved from being normative to informative; - certain TASE.2 conformance blocks have been made out-of-scope. These changes were made in order to remove TASE.2 blocks that were seldom used and whose capabilities are typically implemented by some other means besides TASE.2. This was done to promote interoperability of implementations from an application perspective.
EN 60870-6-702:2014 is classified under the following ICS (International Classification for Standards) categories: 33.200 - Telecontrol. Telemetering. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 60870-6-702:2014 has the following relationships with other standards: It is inter standard links to EN 60870-6-702:1998, IEC TS 62351-4:2007, ISO/IEC 8650-2:1997, EN 12502-4:2004, EN 60870-6-503:2014, EN 61970-301:2014, EN 60870-6-503:1997. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 60870-6-702:2014 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
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Telecontrol equipment and systems - Part 6-702: Telecontrol protocols compatible with
ISO standards and ITU-T recommendations - Functional profile for providing the TASE.2
application service in end systems
Ta slovenski standard je istoveten z: EN 60870-6-702:2014
ICS:
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 60870-6-702
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 33.200 Supersedes EN 60870-6-702:1998
English Version
Telecontrol equipment and systems - Part 6-702: Telecontrol
protocols compatible with ISO standards and ITU-T
recommendations - Functional profile for providing the TASE.2
application service in end systems
(IEC 60870-6-702:2014)
Matériels et systèmes de téléconduite - Partie 6-702: Fernwirkeinrichtungen und -systeme - Teil 6-702:
Protocoles de téléconduite compatibles avec les normes Fernwirkprotokolle, die mit ISO-Normen und ITU-T-
ISO et les recommandations de l'UIT-T - Profil fonctionnel Empfehlungen kompatibel sind - Funktionsprofil für den
pour fournir le service d'application TASE.2 dans les TASE.2-Anwendungsdienst in Endsystemen
systèmes finals (IEC 60870-6-702:2014)
(CEI 60870-6-702:2014)
This European Standard was approved by CENELEC on 2014-08-19. 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
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60870-6-702:2014 E
Foreword
The text of document 57/1454/FDIS, future edition 2 of IEC 60870-6-702, prepared by IEC/TC 57
"Power systems management and associated information exchange" was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN 60870-6-702:2014.
The following dates are fixed:
– latest date by which the document has to be implemented at (dop) 2015-05-19
national level by publication of an identical national
standard or by endorsement
– latest date by which the national standards conflicting with (dow) 2017-08-19
the document have to be withdrawn
This document supersedes EN 60870-6-702:1998.
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 60870-6-702:2014 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated :
IEC 60870-6-802:2014 NOTE Harmonized as EN 60870-6-802:2014 (not modified).
- 3 - EN 60870-6-702:2014
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 60870-6-503 - Telecontrol equipment and systems - EN 60870-6-503 -
Part 6-503: Telecontrol protocols
compatible with ISO standards and ITU-T
recommendations - TASE.2 Services and
protocol
IEC/TS 62351-4 - Power systems management and - -
associated information exchange - Data
and communications security -
Part 4: Profiles including MMS
ISO/IEC 8327-2 - Information technology - Open Systems - -
Interconnection - Connection-oriented
Session protocol: Protocol Implementation
Conformance Statement (PICS) proforma
ISO/IEC 8650-2 - Information technology - Open Systems - -
Interconnection - Protocol specification for
the Association Control Service Element:
Protocol Implementation Conformance
Statement (PICS) proforma
ISO/IEC 8823-2 - Information technology - Open Systems - -
Interconnection - Connection-oriented
presentation protocol: Protocol
Implementation Conformance Statement
(PICS) proforma
ISO 9506-1 2003 Industrial automation systems - - -
Manufacturing Message Specification -
Part 1: Service definition
ISO 9506-2 2003 Industrial automation systems - - -
Manufacturing Message Specification -
Part 2: Protocol specification
Publication Year Title EN/HD Year
1)
ISO/ISP 14226-1 1996 Industrial automation systems - - -
International Standardized Profile AMM11:
MMS General Applications Base Profile -
Part 1: Specification of ACSE, Presentation
and Session protocols for the use by MMS
1)
ISO/ISP 14226-2 1996 Industrial automation systems - - -
International Standardized Profile AMM11:
MMS General Applications Base Profile -
Part 2: Common MMS requirements
RFC 2126 - ISO Transport Service on top of TCP - -
(ITOT)
1)
Withdrawn.
IEC 60870-6-702 ®
Edition 2.0 2014-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Telecontrol equipment and systems –
Part 6-702: Telecontrol protocols compatible with ISO standards and ITU-T
recommendations – Functional profile for providing the TASE.2 application
service in end systems
Matériels et systèmes de téléconduite –
Partie 6-702: Protocoles de téléconduite compatibles avec les normes ISO
et les recommandations de l’UIT-T – Profil fonctionnel pour fournir le service
d'application TASE.2 dans les systèmes finals
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 33.200 ISBN 978-2-8322-1653-8
– 2 – IEC 60870-6-702:2014 © IEC 2014
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Abbreviations . 9
5 Profile protocol stacks . 9
6 Conformance requirements . 10
6.1 General . 10
6.2 TASE.2 requirements . 10
6.3 MMS requirements . 10
6.4 Upper layers requirements . 10
6.5 Lower Layer requirements . 10
Annex A (normative) ISPICS requirements lists . 11
A.1 General . 11
A.2 Classification of requirements . 11
A.2.1 General . 11
A.2.2 Base column . 11
A.2.3 F/S column . 12
A.2.4 Status column . 12
A.2.5 Profile column. 12
A.3 TASE.2 . 13
A.4 MMS . 18
A.4.1 General . 18
A.4.2 MMS Identifier . 19
A.4.3 MMSString . 19
A.4.4 ObjectName . 19
A.4.5 Supported MMS PDUs . 19
A.4.6 PDU-specific requirements . 25
A.5 ACSE . 29
A.5.1 Supported functions . 29
A.5.2 Initiator/responder capability . 30
A.5.3 Supported APDUs . 31
A.5.4 Supported APDU parameters . 32
A.5.5 Supported parameter forms . 33
A.6 Presentation . 34
A.7 Session . 35
Bibliography . 36
Figure 1 – Applicability of functional profile . 8
Table A.1 – Client/Server capability . 13
Table A.2 – TASE.2 CBBs . 13
Table A.3 – Association management . 14
IEC 60870-6-702:2014 © IEC 2014 – 3 –
Table A.4 – Data value . 14
Table A.5 – Data sets . 14
Table A.6 – Accounts . 15
Table A.7 – DS transfer sets . 15
Table A.8 – Time series transfer set objects . 16
Table A.9 – Transfer account transfer set objects . 16
Table A.10 – Information message objects . 16
Table A.11 – Special transfer set objects . 17
Table A.12 – SBO devices . 17
Table A.13 – Programs . 17
Table A.14 – Event enrollments . 18
Table A.15 – Event conditions. 18
Table A.16 – Object models . 18
Table A.17 – Environment and general management . 19
Table A.18 – MMS modifiers . 20
Table A.19 – Parameter CBBs . 21
Table A.20 – VMD support . 21
Table A.21 – Domain management . 22
Table A.22 – Program invocation management . 22
Table A.23 – Variable access. 23
Table A.24 – Semaphore management . 23
Table A.25 – Operator communication . 23
Table A.26 – Event management . 24
Table A.27 – Journal management . 24
Table A.28 – File access . 24
Table A.29 – File management . 25
Table A.30 – Data exchange management . 25
Table A.31 – AccessControl . 25
Table A.32 – Additional PDUs . 25
Table A.33 – GetNameList conformance statement . 26
Table A.34 – VariableAccessSpecification conformance statement . 26
Table A.35 – VariableSpecification conformance statement . 27
Table A.36 – Read conformance statement . 27
Table A.37 – Write conformance statement . 27
Table A.38 – InformationReport conformance statement . 28
Table A.39 – GetVariableAccessAttributes conformance statement . 28
Table A.40 – DefineNamedVariableList conformance statement . 28
Table A.41 – GetNamedVariableListAttributes conformance statement . 29
Table A.42 – DeleteNamedVariableList conformance statement . 29
Table A.43 – Protocol versions . 29
Table A.44 – Other protocol versions . 30
Table A.45 – Technical corrigenda implemented . 30
Table A.46 – Global statement of conformance . 30
– 4 – IEC 60870-6-702:2014 © IEC 2014
Table A.47 – Protocol mechanisms . 30
Table A.48 – Association establishment procedure . 30
Table A.49 – Normal release procedure . 31
Table A.50 – Abnormal release procedure . 31
Table A.51 – Functional units . 31
Table A.52 – ACSE Supported APDUs . 31
Table A.53 – A-associate-request APDU . 32
Table A.54 – A-associate-response APDU . 32
Table A.55 – A-release-request APDU . 32
Table A.56 – A-release-response APDU . 33
Table A.57 – Abort APDU . 33
Table A.58 – AE title syntax name-form . 33
Table A.59 – Authentication value form . 33
Table A.60 – Presentation PRL . 34
Table A.61 – Session PRL . 35
IEC 60870-6-702:2014 © IEC 2014 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TELECONTROL EQUIPMENT AND SYSTEMS –
Part 6-702: Telecontrol protocols compatible with
ISO standards and ITU-T recommendations –
Functional profile for providing the TASE.2
application service in end systems
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,
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Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
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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
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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
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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
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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
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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 60870-6-702 has been prepared by IEC technical committee 57:
Power systems management and associated information exchange.
This second edition cancels and replaces the first edition published in 1998 and constitutes a
technical revision.
The main changes with respect to the previous edition are listed below:
– Accounts, Programs, Event Enrollment, and Event Condition objects were moved from
being normative to informative. As a result, the conformance tables have been updated.
– The services associated with Accounts, Programs, Event Enrollment, and Event
Conditions are now out-of-scope.
– The TASE.2 conformance blocks 6, 7, 8, and 9 have been made out-of-scope.
– 6 – IEC 60870-6-702:2014 © IEC 2014
These changes were made in order to remove TASE.2 blocks that were seldom used and
whose capabilities are typically implemented by some other means besides TASE.2. This was
done to promote interoperability of implementations from an application perspective.
The text of this standard is based on the following documents:
FDIS Report on voting
57/1454/FDIS 57/1478/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.
A list of all parts in the IEC 60870 series, published under the general title Telecontrol
equipment and systems, 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 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.
IEC 60870-6-702:2014 © IEC 2014 – 7 –
INTRODUCTION
This part of IEC 60870 is one of the IEC 60870-6 series defining functional profiles to be used
in telecommunication networks for electric power systems. It is largely based on existing
ISO/IEC International Standards and International Standardized Profiles (ISP).
The notion of functional profiles is fundamental in the organization of the IEC 60870-6 series.
A description of functional profiles, their classification scheme and the manner of defining
them are laid down in IEC 60870-6-1.
This profile for telecontrol application service element (TASE.2, also known as inter-control
centre communications protocol, ICCP) is an application-class profile (A-profile) providing
communications capabilities to control centre applications. The TASE.2 in the application
layer is specified in IEC 60870-6-503. The present standard refines the application layer
protocol to meet interoperability requirements and specifies requirements on the presentation
and session layers support for TASE.2. TASE.2 operates in a connection mode, so this A-
profile needs to interface to a transport-class profile of the T-profile variety.
Since the TASE.2 is an MMS-based protocol, this functional profile (FP) is based on MMS
profiles. In the OSI international standardized profile taxonomy there is a category for MMS A-
profiles. The present standard makes frequent use of the AMM11 profile.
– 8 – IEC 60870-6-702:2014 © IEC 2014
TELECONTROL EQUIPMENT AND SYSTEMS –
Part 6-702: Telecontrol protocols compatible with
ISO standards and ITU-T recommendations –
Functional profile for providing the TASE.2
application service in end systems
1 Scope
This part of IEC 60870 is a functional profile (FP) and defines the provision of the TASE.2
communications services between two control centre end systems. It is supported by the
transport services implemented in accordance with transport-profiles defined for the type of
network that interconnects the control centre end systems. This is demonstrated in Figure 1.
This FP also defines the provision of the OSI connection-mode presentation and session
services between the end systems.
ISO/ISP 14226 specifies the AMM11 profiles for MMS. The parts of ISO/ISP 14226 that cover
the profile that are used as a basis for this FP are ISO/ISP 14226-1 and ISO/ISP 14226-2.
This FP is in alignment with ISO/ISP 14226, as far as possible, and maintains this
compatibility by reference. There are TASE.2 requirements in addition to ISO/ISP 14226.
These requirements are specified in this FP.
Control Control
centre centre
applications applications
TASE.2/MMS
Application
Application
Presentation protocol
Presentation
Presentation
Session protocol
Session Session
4 4
3 3
2 2
1 1
IEC 2021/14
Figure 1 – Applicability of functional profile
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 60870-6-702:2014 © IEC 2014 – 9 –
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60870-6-503, Telecontrol equipment and systems – Part 6-503: Telecontrol protocols
compatible with ISO standards and ITU-T recommendations – TASE.2 Services and protocol
IEC/TS 62351-4, Power systems management and associated information exchange – Data
and communications security – Part 4: Profiles including MMS
ISO/IEC 8327-2, Information technology – Open Systems Interconnection – Connection-
oriented Session protocol: Protocol Implementation Conformance Statement (PICS) proforma
ISO/IEC 8650-2, Information technology – Open Systems Interconnection – Protocol
specification for the Association Control Service Element: Protocol Implementation
Conformance Statement (PICS) proforma
ISO/IEC 8823-2, Information technology – Open Systems Interconnection – Connection-
oriented presentation protocol: Protocol Implementation Conformance Statement (PICS)
proforma
ISO 9506-1:2003, Industrial automation systems – Manufacturing Message Specification –
Part 1: Service definition
ISO 9506-2:2003, Industrial automation systems – Manufacturing Message Specification –
Part 2: Protocol specification
ISO/ISP 14226-1:1996, Industrial automation systems – International Standardized Profile
AMM11: MMS General Applications Base Profile – Part 1: Specification of ACSE,
Presentation and Session protocols for the use by MMS
ISO/ISP 14226-2:1996, Industrial automation systems – International Standardized Profile
AMM11: MMS General Applications Base Profile – Part 2: Common MMS requirements
RFC 2126, ISO Transport Service on top of TCP (ITOT)
3 Terms and definitions
All the terms used in this standard are as defined in the normative references.
4 Abbreviations
All the abbreviations used in this standard are as defined in the normative references.
5 Profile protocol stacks
As shown in Figure 1, the TASE.2 profile includes the TASE.2, MMS and ACSE elements in
the TASE.2 protocol, the connection-mode presentation protocol, and the connection-mode
session protocol.
___________
This publication has been withdrawn from circulation.
– 10 – IEC 60870-6-702:2014 © IEC 2014
6 Conformance requirements
6.1 General
The TASE.2 application profile can be referred to as a TASE.2 MMS application profile. It
shall follow the same rules and regulations governing MMS ISPs. Requirements of the
TASE.2 MMS application profile to support TASE.2 are separated into upper layer
requirements, MMS requirements, and TASE.2 requirements.
The ISPICS requirements lists for TASE.2, MMS, ACSE, presentation and session are given
in Annex A. Annex A makes mandatory some features that were optional in ISO/ISP 14226-1
and ISO/ISP 14226-2.
For each implementation claiming conformance to this part of IEC 60870 an appropriate set of
PICSs shall be made available stating support or non-support of each option identified in this
part.
6.2 TASE.2 requirements
The TASE.2 conformance requirements can be found in A.3.
6.3 MMS requirements
The MMS conformance requirements can be found in A.4. A data structure nesting level
parameter value of greater than 1 shall be supported.
6.4 Upper layers requirements
Upper layer requirements for TASE.2 shall be as defined by ISO/ISP 14226-1 for the AMM11
profile. In addition, the presentation protocol shall be able to support the default context
negotiation, default context name and simply encoded data options.
The TASE.2 MMS application profile requires that there be a mechanism for the application
association performance/quality attributes to be conveyed to the transport (and thus network)
service. The mechanism employed is implementation-defined, but the TASE.2 and transport
profile implementations must be compatible.
When an association is requested, if there is a priority class agreed for it, the value agreed
between the control centres is given to the transport layer. Every data unit that is sent on this
association is treated according to the priority class in the transport service. If no priority
value is agreed, then none is expressed and a default value is assumed.
6.5 Lower Layer requirements
The lower layers shall be based upon TCP/IP and include RFC-2126.
The implementation of IPv4 is mandatory.
IEC 60870-6-702:2014 © IEC 2014 – 11 –
Annex A
(normative)
ISPICS requirements lists
A.1 General
This annex describes the TASE.2, ACSE, presentation and session requirements in terms of
tables which reference the base standard PICS proforma. The MMS requirements are also
described in terms of tables which were derived from the base standard. The tables are
intended to give a precise specification of requirements. In case of arbitration or dispute, this
annex takes precedence over Clause 6.
In the PICS proforma reference column of Tables A.1 to A.16 and A.43 to A.61, and in the
lists of conditional expressions underneath the tables, tables within the base standard PICS
proformas are referenced. The first letter identifies the specific PICS proforma:
I – TASE.2 – IEC 60870-6-503;
A – ACSE – ISO/IEC 8650-2;
P – Presentation – ISO/IEC 8823-2;
S – Session – ISO/IEC 8327-2.
The characters from the second character to the solidus (/) form a reference to the specific
subclause in annex A of that PICS proforma which contains the table in question. The number
after the solidus references the row number in the table.
Coupling between layers is accounted for in this standard. Optional "o" items can be chosen
without regard to the affect on another layer.
A.2 Classification of requirements
A.2.1 General
Throughout this annex, to specify the level of support for each feature, the following
classification is used.
Client-CR: Client conformance requirement
Server-CR: Server conformance requirement
A.2.2 Base column
The "Base" column reflects the definitions and specifications in the appropriate base
standard. Each entry in this column is chosen from the following list:
mandatory; m: this feature shall be supported, i.e. its syntax and procedures shall be
implemented as specified in the base standard. However, it is not a requirement that the
feature shall be used in all instances of communication, unless mandated by the base
standard;
optional; o: any feature denoted by "o" is left to the implementation as to whether that feature
is implemented or not. If a parameter is optionally supported, then the syntax shall be
implemented, but it is left to each implementation whether the procedures are implemented or
not.
– 12 – IEC 60870-6-702:2014 © IEC 2014
Where the base entry contains two classifications separated by a comma, these reference the
sending and receiving capabilities, respectively.
A.2.3 F/S column
The "F/S" column reflects the requirements of this Functional Standard. Each entry in this
column is chosen from the following terminology:
supported; m: any feature denoted by "m" is mandatory or optional in the base standard.
This feature shall be supported, i.e. its syntax and procedures shall be implemented as
specified in the base standard or in this ISP by all implementations claiming conformance to
this standard. However, it is not a requirement that the feature shall be used in all instances
of communication, unless mandated by the base standard or stated otherwise in this profile;
optionally supported; o: any feature denoted by "o" is left to the implementation as to
whether that feature is implemented or not. If a parameter is optionally supported, then the
syntax shall be implemented, but it is left to each implementation whether the procedures are
implemented or not;
conditionally supported; c: any feature denoted by "c" shall be supported under the
conditions specified in this standard. If these conditions are not met, the feature is outside the
scope of this standard;
excluded; x: any feature denoted by "x" is excluded in this profile, i.e. an implementation
shall behave as if the feature were not implemented;
outside of scope; i: any feature denoted by "i" is outside the scope of this standard, i.e. it
may be ignored, and will therefore not be subject to a profile conformance test. However, the
syntax of all parameters of supported PDUs shall be implemented, even if the procedures are
not (i.e. the receiver shall be able to decode the PDU);
not applicable; –: any feature denoted by "–" is not defined in the context where it is
mentioned, e.g. a parameter which is not part of the respective PDU. The occurrence of "not
applicable" features is mainly due to the format of the tables in the ISPICS requirements list.
Where the F/S entry contains two classifications separated by a comma, these reference the
sending and receiving capabilities, respectively.
A.2.4 Status column
The status column reflects the classification to be found in the base standard PICS proforma:
o: optional;
c: conditional;
o.n: optional with at least one of the marked items being selected.
The definitions of conditional items may be found in the respective PICS proformas.
Where the status entry contains two classifications separated by a comma, these reference
the sending and receiving capabilities, respectively.
A.2.5 Profile column
The profile column reflects the requirement of this profile. Each entry in this column is chosen
from the following list:
m: mandatory support;
c: conditional support;
IEC 60870-6-702:2014 © IEC 2014 – 13 –
o.n: optional with at least one of the marked items being selected;
i: outside the scope;
x: exclude from use. Shall not be supported/implemented .
–: not applicable.
Where the profile entry contains two classifications, separated by a comma, these reference
the sending and receiving capabilities, respectively.
A.3 TASE.2
Throughout this clause, the entry mn denotes that the item is mandatory for conformance to
block n.
Table A.1 – Client/Server capability
PICS Capability Base F/S
proforma
reference
I. /1 Client control centre o.1
I. /2 Server control centre o.1
Table A.2 – TASE.2 CBBs
PICS Conformance building block Base F/S
proforma
Client-CR Server-CR
reference
I. /1 Basic Services m m m
I. /2 Extended Conditions o o o
I. /3 Blocked Transfers o o o
I. /4 Information Message o o o
I. /5 SBO Device Control o o o
I. /6 Programs i i i
I. /7 Events i i i
I. /8 Accounts i i i
I. /9 Time Series i i i
___________
The exclusion of certain services is used to improve the overall security aspects of TASE.2. There have been
several assessments that indicated since ISO 9506 has 86+ services, that represents a potential security issue.
Therefore, the use of an “x” is intended to mandate that services not required to support TASE.2 shall be
disabled.
– 14 – IEC 60870-6-702:2014 © IEC 2014
Table A.3 – Association management
PICS Association management Base F/S
proforma
Client-CR Server-CR
reference
1 1 1
I. /1 Supported Features m m m
I. /2 QOS o o o
1 1 1
I. /3 Associate Operation m m m
1 1 1
I. /4 Conclude Operation m m m
1 1 1
I. /5 Abort Operation m m m
I. /6 Security per IEC/TS 62351-4 o o o
Table A.4 – Data value
PICS Data values Base F/S
proforma
Client-CR Server-CR
reference
1 1 1
I. /1 Data Value Model m m m
I. /2 VCC-specific scope (see note) o m o
I. /3 ICC-specific scope (see note) o m o
1 1
I. /4 Get Data Value Operation o, m o m
1 1
I. /5 Set Data Value Operation o, m o m
1 1
I. /6 Get Data Value Names Operation o, m o m
1 1
I. /7 Get Data Value Type Operation o, m o m
1 1 1 1
I. /8 IndicationPoint Object m , m m m
5 5 5 5
I. /9 ControlPoint Object m , m m m
I. /10 ProtectionEquipmentEvent Object o, o o o
Either VCC-specific or ICC-specific scope must be supported by servers for block 1.
Table A.5 – Data sets
PICS Data sets Base F/S
proforma
Client-CR Server-CR
reference
1 1 1
I. /1 Data Set Model m m m
I. /2 VCC-specific scope (see note) o m o
I. /3 ICC-specific scope (see note) o m o
I. /4 Create Data Set Operation o o o
I. /5 Delete Data Set Operation o o o
1 1
I. /6 Get Data Set Element Values Operation o, m o m
1 1
I. /7 Set Data Set Element Values Operation o, m o m
1 1
I. /8 Get Data Set Names Operation o, m o m
1 1
I. /9 Get Data Set Element Names Operation o, m o m
Either VCC-specific or ICC-specific scope must be supported by servers for block 1.
IEC 60870-6-702:2014 © IEC 2014 – 15 –
Table A.6 – Accounts
PICS Accounts Base F/S
proforma
Client-CR Server-CR
reference
8 8 8
I. /1 Account Model i i i
8 8 8
I. /2 Query Operation i i i
8 8 8
I. /3 TransferAccount Object i i i
8 8 8
I. /4 TransmissionSegment Object i i i
8 8 8
I. /5 ProfileValue Object i i i
I. /6 AccountRequest Object i i i
I. /7 DeviceOutage Object o o o
I. /8 AvailabilityReport Object i i i
I. /9 RealTimeStatus Object i i i
I. /10 ForecastSchedule Object i i i
I. /12 Curve Object i i i
I. /13 Power System Dynamic Objects i i i
Table A.7 – DS transfer sets
PICS DS transfer sets Base F/S
proforma
Client-CR Server-CR
reference
1 1 1
I. /1 Data Set Transfer Set Model m m m
1 1 1
I. /2 Start Transfer Operation m m m
1 1 1
I. /3 Stop Transfer Operation m m m
1 1 1
I. /4 Get Next DSTransfer Set Operation m m m
1 1
I. /5 IntervalTimeOut o, m o m
2 2
I. /6 ObjectChange o, m o m
1 1
I. /7 OperatorRequest (see note) o, m o m
2 2
I. /8 IntegrityTimeout o, m o m
1 1
I. /9 OtherExternalEvent (see note) o, m o m
1 1
I. /10 EventCodeRequested (see note) o, m o m
1 1 1
I. /11 Start Time m m m
1 1 1
I. /12 Interval m m m
2 2
I. /13 TLE o, m o m
2 2
I. /14 Buffer Time o, m o m
2 2
I. /15 Integrity Check o, m o m
1 1
I. /16 DSConditions Requested o, m o m
I. /17 Block Data o, m3 o m
2 2
I. /18 Critical o, m o m
2 2
I. /19 RBE o, m o m
Servers must support the processing of these parameters. This does not imply the presence of the application.
– 16 – IEC 60870-6-702:2014 © IEC 2014
Table A.8 – Time series transf
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