EN 62541-6:2011

OPC unified architecture - Part 6: Mappings

IEC 62541-6:2011 specifies the OPC Unified Architecture (OPC UA) mapping between the security model described in IEC 62541-2, the abstract service definitions, described in IEC 62541-4, the data structures defined in IEC 62541-5 and the physical network protocols that can be used to implement the OPC UA specification.

OPC Unified Architecture - Teil 6: Protokollabbildungen

Architecture unifiée OPC - Partie 6: Correspondances

La CEI 62541-6:2011 spécifie les correspondances de l'architecture unifiée OPC (OPC UA) entre le modèle de sécurité décrit dans la IEC 62541-2, les définitions de services abstraits décrites dans la IEC 62541-4, les structures de données définies dans la CEI 62541-5 et les protocoles de réseaux physiques pouvant être utilisés pour mettre en oeuvre la spécification OPC UA.

Poenotena arhitektura OPC - 6. del: Preslikave (IEC 62541-6:2011)

Ta del standarda IEC 62541 določa preslikavo poenotene arhitekture OPC (OPC UA) med zaščitnim modelom iz standarda IEC 62541-2, definicijami abstraktnih opravilih
standarda IEC 62541-4, podatkovnimi strukturami iz standarda IEC 62541-5 in fizičnimi omrežnimi protokoli, ki se lahko uporabljajo za izvajanje specifikacije poenotene arhitekture OPC.

General Information

• Status: Withdrawn
• Publication Date: 08-Dec-2011
• Withdrawal Date: 21-Nov-2014
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 25.100.01 - Cutting tools in general
• ICS: 35.100 - Open systems interconnection (OSI)
• Technical Committee: CLC/TC 65X - Industrial-process measurement, control and automation
• Drafting Committee: IEC/SC 65E - IEC_SC_65E
• Parallel Committee: IEC/SC 65E - IEC_SC_65E
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 29-Apr-2018
• Completion Date: 29-Apr-2018
• Mandate: M/490 - Standardisation mandate to the European Standardisation Organisations (ESOs) to support European Smart Grid deployment
• Ref Project: SIST EN 62541-6:2012 - OPC unified architecture - Part 6: Mappings (IEC 62541-6:2011)

Relations

• Replaced By: EN 62541-6:2015 - OPC unified architecture - Part 6: Mappings
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2012
Poenotena arhitektura OPC - 6. del: Preslikave (IEC 62541-6:2011)
OPC unified architecture - Part 6: Mappings (IEC 62541-6:2011)
OPC Unified Architecture - Teil 6: Protokollabbildungen (IEC 62541-6:2011)
Architecture unifiée OPC - Partie 6: Correspondances (CEI 62541-6:2011)
Ta slovenski standard je istoveten z: EN 62541-6:2011
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.240.50 Uporabniške rešitve IT v IT applications in industry
industriji
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 62541-6
NORME EUROPÉENNE
December 2011
EUROPÄISCHE NORM
ICS 25.040.40; 25.100.01
English version
OPC unified architecture -
Part 6: Mappings
(IEC 62541-6:2011)
Architecture unifiée OPC -  OPC Unified Architecture -
Partie 6: Correspondances Teil 6: Protokollabbildungen
(CEI 62541-6:2011) (IEC 62541-6:2011)

This European Standard was approved by CENELEC on 2011-11-22. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

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

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62541-6:2011 E
Foreword
The text of document 65E/193/FDIS, future edition 1 of IEC 62541-6, prepared by SC 65E, "Devices and
integration in enterprise systems", of IEC/TC 65, "Industrial-process measurement, control and
automation" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
(dop) 2012-08-22
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2014-11-22
• latest date by which the national
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 62541-6:2011 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 62541-6:2011
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC/TR 62541-1 - OPC unified architecture - CLC/TR 62541-1 -
Part 1: Overview and concepts
IEC/TR 62541-2 - OPC unified architecture - CLC/TR 62541-2 -
Part 2: Security model
IEC 62541-3 - OPC unified architecture - EN 62541-3 -
Part 3: Address space model
IEC 62541-4 - OPC unified architecture - EN 62541-4 -
Part 4: Services
IEC 62541-5 - OPC unified architecture - EN 62541-5 -
Part 5: Information Model
IEC 62541-7 - OPC Unified Architecture - EN 62541-7 -
Part 7: Profiles
ITU-T X.509 - Information technology – Open systems - -
interconnection – The Directory: Public-key
and attribute certificate frameworks

ITU-T X.690 - Information technology - ASN.1 encoding - -
rules: Specification of Basic Encoding Rules
(BER), Canonical Encoding Rules (CER) and
Distinguished Encoding Rules (DER)

ITU-T X.200 - Information technology - Open Systems - -
Interconnection - Basic Reference Model:
The basic model
RFC 3548 - The Base16, Base32, and Base64 Data - -
Encodings
RFC 2104 - HMAC: Keyed-Hashing for Message - -
Authentication
RFC 2437 - PKCS #1: RSA Cryptography Specifications - -
Version 2.0
RFC 3280 - Internet X.509 Public Key Infrastructure - -
Certificate and Certificate Revocation List
(CRL) Profile
RFC 2818 - HTTP Over TLS - -
RFC 2616 - Hypertext Transfer Protocol - HTTP/1.1 - -

RFC 2246 - The TLS Protocol - -

RFC 4514 - Lightweight Directory Access Protocol - -
(LDAP): String Representation of
Distinguished Names
RFC 3629 - UTF-8, User Datagram Protocol - -

IEEE 754 - Binary floating-point arithmetic - -

XML Schema Part 1 - XML Schema Part 1: Structures - -

XML Schema Part 2 - XML Schema Part 2 - -

SOAP Part 1 - SOAP Version 1.2 Part 1: Messaging - -
Framework
SOAP Part 2 - SOAP Version 1.2 Part 2: Adjuncts - -

XML Encryption - XML Encryption Syntax and Processing - -

XML Signature - XML-Signature Syntax and Processing - -

WS Security - SOAP Message Security 1.1 - -

WS Addressing - Web Services Addressing (WS-Addressing) - -

WS Trust - WS Trust 1.3 - -
WS Secure - WS Secure Conversation 1.3 - -
Conversation
WS Security Policy - WS Security Policy 1.2 - -

WS-I - Basic Profile Version 1.1 - -

WS-I - Basic Security Profile Version 1.1 - -

PKCS #12 - PKCS 12 v1.0: Personal Information - -
Exchange Syntax
FIPS 180-2 - Secure Hash Standard (SHA) - -

FIPS 197 - Advanced Encyption Standard (AES) - -

IEC 62541-6 ®
Edition 1.0 2011-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
OPC unified architecture –
Part 6: Mappings
Architecture unifiée OPC –
Partie 6: Correspondances
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XB
ICS 25.040.40; 25.100.01 ISBN 978-2-88912-728-3

– 2 – 62541-6 © IEC:2011
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and abbreviations . 11
3.1 Terms and definitions . 11
3.2 Abbreviations . 12
4 Overview . 12
5 Data Encoding . 13
5.1 General . 13
5.1.1 Overview . 13
5.1.2 Built-in Types . 14
5.1.3 Guid . 14
5.1.4 ExtensionObject . 15
5.1.5 Variant . 15
5.2 OPC UA Binary . 15
5.2.1 General . 15
5.2.2 Built-in Types . 16
5.2.3 Enumerations . 24
5.2.4 Arrays . 24
5.2.5 Structures . 24
5.2.6 Messages . 25
5.3 XML . 26
5.3.1 Built-in Types . 26
5.3.2 Enumerations . 31
5.3.3 Arrays . 32
5.3.4 Structures . 32
5.3.5 Messages . 33
6 Security Protocols . 33
6.1 Security Handshake . 33
6.2 Certificates . 34
6.2.1 General . 34
6.2.2 Application Instance Certificate . 34
6.2.3 Signed Software Certificate . 35
6.3 WS Secure Conversation. 36
6.3.1 Overview . 36
6.3.2 Notation . 38
6.3.3 Request Security Token (RST/SCT) . 38
6.3.4 Request Security Token Response (RSTR/SCT) . 39
6.3.5 Using the SCT . 40
6.3.6 Cancelling Security Contexts . 40
6.4 OPC UA Secure Conversation . 41
6.4.1 Overview . 41
6.4.2 MessageChunk Structure. 41
6.4.3 MessageChunks and Error Handling . 44
6.4.4 Establishing a SecureChannel . 45

62541-6 © IEC:2011 – 3 –
6.4.5 Deriving Keys . 46
6.4.6 Verifying Message Security . 47
7 Transport Protocols . 48
7.1 OPC UA TCP . 48
7.1.1 Overview . 48
7.1.2 Message Structure . 48
7.1.3 Establishing a Connection . 50
7.1.4 Closing a Connection . 51
7.1.5 Error Handling . 52
7.1.6 Error Recovery . 52
7.2 SOAP/HTTP . 54
7.2.1 Overview . 54
7.2.2 XML Encoding .
...