EN IEC 62439-3:2022

SLOVENSKI STANDARD
01-junij-2022
Nadomešča:
SIST EN IEC 62439-3:2018
Industrijska komunikacijska omrežja - Omrežja za avtomatizacijo z visoko
razpoložljivostjo - 3. del: Protokol vzporedne redundance (PRP) in brezprehodna
zanka z visoko razpoložljivostjo (HSR) (IEC 62439-3:2021)
Industrial communication networks - High availability automation networks - Part 3:
Parallel Redundancy Protocol (PRP) and High-availability Seamless Redundancy (HSR)
(IEC 62439-3:2021)
Industrielle Kommunikationsnetze - Hochverfügbare Automatisierungsnetze - Teil 3:
Parallelredundanz-Protokoll (PRP) und nahtloser Hochverfügbarkeits-Ring (HSR) (IEC
62439-3:2021)
Réseaux de communication industriels Réseaux d'automatisme à haute disponibilité
Partie 3: Protocole de redondance en parallèle (PRP) et redondance transparente de
haute disponibilité (HSR) (IEC 62439-3:2021)
Ta slovenski standard je istoveten z: EN IEC 62439-3:2022
ICS:
25.040.01 Sistemi za avtomatizacijo v Industrial automation
industriji na splošno systems in general
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62439-3

NORME EUROPÉENNE
EUROPÄISCHE NORM February 2022
ICS 25.040.40; 35.100.05 Supersedes EN IEC 62439-3:2018 and all of its
amendments and corrigenda (if any)
English Version
Industrial communication networks - High availability automation
networks - Part 3: Parallel Redundancy Protocol (PRP) and
High-availability Seamless Redundancy (HSR)
(IEC 62439-3:2021)
Réseaux de communication industriels - Réseaux de haute Industrielle Kommunikationsnetze - Hochverfügbare
disponibilité pour l'automatisation - Partie 3: Protocole de Automatisierungsnetze - Teil 3: Parallelredundanz-Protokoll
redondance en parallèle (PRP) et redondance transparente (PRP) und nahtloser Hochverfügbarkeits-Ring (HSR)
de haute disponibilité (HSR) (IEC 62439-3:2021)
(IEC 62439-3:2021)
This European Standard was approved by CENELEC on 2022-01-19. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62439-3:2022 E

European foreword
The text of document 65C/1120/FDIS, future edition 4 of IEC 62439-3, prepared by SC 65C "Industrial
networks" of IEC/TC 65 "Industrial-process measurement, control and automation" was submitted to
the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 62439-3:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-10-19
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-01-19
document have to be withdrawn
This document supersedes EN IEC 62439-3:2018 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62439-3:2021 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 61784-1 NOTE Harmonized as EN IEC 61784-1
IEC 61784-2 NOTE Harmonized as EN IEC 61784-2
IEC 61850 (series) NOTE Harmonized as EN 61850 (series)
IEC 61850-8-1 NOTE Harmonized as EN 61850-8-1
IEC 61850-9-2 NOTE Harmonized as EN 61850-9-2
IEC 62439-2 NOTE Harmonized as EN 62439-2
IEC 62439-3:2016 NOTE Harmonized as EN IEC 62439-3:2018 (not modified)
IEC 62439-4 NOTE Harmonized as EN 62439-4
IEC 62439-6 NOTE Harmonized as EN 62439-6
IEC 62439-7 NOTE Harmonized as EN 62439-7
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1 Where 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 60050-192 - International Electrotechnical - -
Vocabulary (IEV) - Part 192:
Dependability
IEC 61588 2021 Precision Clock Synchronization - -
Protocol for Networked Measurement
and Control Systems
IEC/TR 61850-90-4 2020 Communication networks and systems - -
for power utility automation - Part 90-4:
Network engineering guidelines
IEC 62439-1 - Industrial communication networks - EN 62439-1 -
High availability automation networks -
Part 1: General concepts and calculation
methods
ISO/IEC/IEEE 8802-3 2021 Telecommunications and exchange - -
between information technology
systems - Requirements for local and
metropolitan area networks - Part 3:
Standard for Ethernet
IEC/IEEE 61850-9-3 2016 Communication networks and systems - -
for power utility automation - Part 9-3:
Precision time protocol profile for power
utility automation
IEEE 802.1Q 2018 IEEE Standard for Local and - -
metropolitan area networks – Bridges
and Bridged Network
IETF RFC 768 - User Datagram Protocol (UDP) [online]. - -
August 1980.
IETF RFC 791 - Internet Protocol (IP) [online]. - -
September 1981.
IETF RFC 792 - Internet Control Message Protocol - -
[online]. September 1981.
Publication Year Title EN/HD Year
IETF RFC 793 - Transmission Control Protocol [online]. - -
September 1981.
IETF RFC 826 - Ethernet Address Resolution Protocol - -
[online]. November 1982.
IETF RFC 2578 - Structure of Management Information - -
Version 2 (SMIv2) [online]. April 1999.
IETF RFC 3418 - Structure of Management Information - -
Version 2 (SMIv2) [online]. December
2002.
IEC 62439-3 ®
Edition 4.0 2021-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – High availability automation networks –

Part 3: Parallel Redundancy Protocol (PRP) and High-availability Seamless

Redundancy (HSR)
Réseaux de communication industriels – Réseaux de haute disponibilité pour

l'automatisation –
Partie 3: Protocole de redondance en parallèle (PRP) et redondance

transparente de haute disponibilité (HSR)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100.05 ISBN 978-2-8322-1059-5

– 2 – IEC 62439-3:2021 © IEC 2021
CONTENTS
FOREWORD . 10
INTRODUCTION . 13
0.1 General . 13
0.2 Patent declaration . 13
1 Scope . 15
1.1 General . 15
1.2 Code component distribution . 15
2 Normative references . 16
3 Terms, definitions, abbreviated terms, and conventions . 17
3.1 Terms and definitions . 17
3.2 Abbreviated terms . 19
3.3 Conventions . 20
4 Parallel Redundancy Protocol (PRP) . 20
4.1 PRP principle of operation . 20
4.1.1 PRP network topology . 20
4.1.2 PRP LANs with linear or bus topology . 22
4.1.3 PRP LANs with ring topology . 22
4.1.4 DANP node structure . 23
4.1.5 PRP attachment of singly attached nodes . 24
4.1.6 Compatibility between singly and doubly attached nodes . 25
4.1.7 Network management . 25
4.1.8 Implication on application . 25
4.1.9 Transition to a single-thread network . 26
4.1.10 Duplicate handling . 26
4.1.11 Network supervision . 31
4.1.12 Redundancy management interface . 31
4.2 PRP protocol specifications . 32
4.2.1 Installation, configuration and repair guidelines . 32
4.2.2 Unicast MAC addresses . 32
4.2.3 Multicast MAC addresses . 32
4.2.4 IP addresses . 33
4.2.5 Node specifications . 33
4.2.6 Duplicate Accept mode (testing only) . 33
4.2.7 Duplicate Discard mode . 34
4.3 PRP_Supervision frame . 38
4.3.1 PRP_Supervision frame format . 38
4.3.2 PRP_Supervision frame contents . 40
4.3.3 PRP_Supervision frame for RedBox . 41
4.3.4 Bridging node (deprecated) . 41
4.4 Constants . 42
4.5 PRP layer management entity (LME) . 42
5 High-availability Seamless Redundancy (HSR) . 42
5.1 HSR objectives . 42
5.2 HSR principle of operation . 43
5.2.1 Basic operation with a ring topology . 43
5.2.2 HSR connection to other networks . 45
...