SIST EN 62439-3:2012

SLOVENSKI STANDARD
SIST EN 62439-3:2012
01-november-2012
1DGRPHãþD
SIST EN 62439-3:2010
Industrijska komunikacijska omrežja za avtomatizacijo z visoko razpoložljivostjo -
3. del: Protokol vzporedne redundance (RPR) in brezprehodna zanka z visoko
razpoložljivostjo (IEC 62439-3:2012)
Industrial communication networks - High availability automation networks - Part 3:
Parallel Redundancy Protocol (PRP) and High availability Seamless Redundancy (HSR)
(IEC 62439-3:2012)
Industrielle Kommunikationsnetze: Hochverfügbare Automatisierungsnetze - Teil 3:
Parallelredundanz-Protokoll (PRP) und nahtloser Hochverfügbarkeits-Ring (HSR) (IEC
62439-3:2012)
Réseaux de communication industrielle - Réseaux d’automatisme à haute disponibilité -
Partie 3 : Protocole de redondance parallèle (PRP) et redondance transparente de haute
disponibilité (HSR) (CEI 62439-3:2012)
Ta slovenski standard je istoveten z: EN 62439-3:2012
ICS:
25.040.01 Sistemi za avtomatizacijo v Industrial automation
industriji na splošno systems in general
35.110 Omreževanje Networking
SIST EN 62439-3:2012 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62439-3:2012

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SIST EN 62439-3:2012

EUROPEAN STANDARD
EN 62439-3

NORME EUROPÉENNE
September 2012
EUROPÄISCHE NORM

ICS 25.040; 35.040 Supersedes EN 62439-3:2010


English version


Industrial communication networks -
High availability automation networks -
Part 3: Parallel Redundancy Protocol (PRP) and High-availability
Seamless Redundancy (HSR)
(IEC 62439-3:2012)


Réseaux industriels de communication -  Industrielle Kommunikationsnetze -
Réseaux d’automatisme à haute Hochverfügbare Automatisierungsnetze -
disponibilité - Teil 3: Parallelredundanz-Protokoll (PRP)
Partie 3 : Protocole de redondance und nahtloser Hochverfügbarkeits-Ring
parallèle (PRP) et redondance (HSR)
transparente de haute disponibilité (HSR) (IEC 62439-3:2012)
(CEI 62439-3:2012)





This European Standard was approved by CENELEC on 2012-08-09. 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.

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

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62439-3:2012 E

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SIST EN 62439-3:2012
EN 62439-3:2012 - 2 -

Foreword
The text of document 65C/687/FDIS, future edition 2 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 62439-3:2012.

The following dates are fixed:
(dop) 2013-05-09
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2015-08-09
• latest date by which the national
standards conflicting with the
document have to be withdrawn

This document supersedes EN 62439-3:2010.
EN 62439-3:2012 includes the following significant technical changes with respect to EN 62439-3:2010:
– specification of the interconnection of PRP and HSR networks;
– introduction of a suffix for PRP frames;
– clarification and modification of specifications to ensure interoperability;
– slackening of the specifications to allow different implementations;
– consideration of clock synchronization according to IEC 61588;
– introduction of test modes to simplify testing and maintenance.
This standard is to be used in conjunction with EN 62439-1:2010.
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 62439-3:2012 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 61580 series NOTE  Harmonized in EN 61580 series (not modified).

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SIST EN 62439-3:2012
- 3 - EN 62439-3:2012

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  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 60050-191 - International Electrotechnical Vocabulary - -
(IEV) -
Chapter 191: Dependability and quality of
service


IEC 61588 - Precision clock synchronization protocol for - -
networked measurement and control systems


IEC 62439-1 - Industrial communication networks - High EN 62439-1 -
availability automation networks -
Part 1: General concepts and calculation
methods


IEC 62439-2 - Industrial communication networks - High EN 62439-2 -
availability automation networks -
Part 2: Media Redundancy Protocol (MRP)


IEC 62439-6 - Industrial communication networks - High EN 62439-6 -
availability automation networks -
Part 6: Distributed Redundancy Protocol
(DRP)


IEC 62439-7 - Industrial communication networks - High EN 62439-7 -
availability automation networks -
Part 7: Ring-based Redundancy Protocol
(RRP)


ISO/IEC 8802-3 2000 Information technology - Telecommunications - -
and information exchange between systems -
Local and metropolitan area networks -
Specific requirements -
Part 3: Carrier sense multiple access with
collision detection (CSMA/CD) access method
and physical layer specifications


IEEE 802.1D 2004 IEEE Standard for Local and Metropolitan - -
Area Networks - Media Access Control (MAC)
Bridges


IEEE 802.1Q 2011 IEEE Standard for Local and Metropolitan - -
Area Networks - Virtual Bridged Local Area
Networks

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SIST EN 62439-3:2012

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SIST EN 62439-3:2012



IEC 62439-3

®


Edition 2.0 2012-07




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Industrial communication networks – High availability automation networks –

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

Redundancy (HSR)




Réseaux industriels de communication – Réseaux d'automatisme à haute

disponibilité –


Partie 3: Protocole de redondance parallèle (PRP) et redondance transparente de

haute disponibilité (HSR)












INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX XC


ICS 25.040; 35.040 ISBN 978-2-83220-160-2



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 62439-3:2012
– 2 – 62439-3 © IEC:2012
CONTENTS
FOREWORD . 5
0 INTRODUCTION . 7
0.1 General . 7
0.2 Changes with respect to the previous edition . 7
0.3 Patent declaration . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, abbreviations, acronyms, and conventions . 10
3.1 Terms and definitions . 10
3.2 Abbreviations and acronyms . 10
3.3 Conventions . 10
4 Parallel Redundancy Protocol (PRP) . 10
4.1 PRP principle of operation . 10
4.1.1 PRP network topology . 10
4.1.2 PRP LANs with linear or bus topology . 11
4.1.3 PRP LANs with ring topology . 12
4.1.4 DANP node structure . 12
4.1.5 PRP attachment of singly attached nodes . 13
4.1.6 Compatibility between singly and doubly attached nodes . 14
4.1.7 Network management . 14
4.1.8 Implication on configuration . 14
4.1.9 Transition to non-redundant networks . 14
4.1.10 Duplicate handling . 15
4.1.11 Network supervision . 19
4.1.12 Redundancy management interface . 19
4.2 PRP protocol specifications . 19
4.2.1 Installation, configuration and repair guidelines . 19
4.2.2 MAC addresses . 20
4.2.3 Multicast MAC addresses . 20
4.2.4 IP addresses . 20
4.2.5 Nodes . 20
4.2.6 Duplicate Accept mode (testing only) . 21
4.2.7 Duplicate Discard mode . 21
4.3 PRP_Supervision frame . 24
4.3.1 Supervision frame for DANP . 24
4.3.2 PRP_Supervision frame contents . 27
4.3.3 PRP_Supervision frame for RedBox . 27
4.3.4 Reception of a PRP_Supervision frame and NodesTable . 27
4.4 Bridging node . 28
4.5 Constants . 28
4.6 PRP service specification . 28
5 High-availability Seamless Redundancy (HSR) . 28
5.1 HSR objectives . 28
5.2 HSR principle of operation . 29
5.2.1 Basic operation with a ring topology . 29
5.2.2 DANH node structure . 30

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SIST EN 62439-3:2012
62439-3 © IEC:2012 – 3 –
5.2.3 Topology . 31
5.2.4 RedBox structure . 39
5.3 HSR node specifications . 41
5.3.1 HSR operation . 41
5.3.2 DANH receiving from its link layer interface . 41
5.3.3 DANH receiving from an HSR port . 42
5.3.4 DANH forwarding rules . 43
5.3.5 CoS . 43
5.3.6 Clock synchronization . 43
5.3.7 Deterministic medium access . 44
5.4 HSR RedBox specifications . 44
5.4.1 RedBox properties . 44
5.4.2 RedBox receiving from interlink . 44
5.4.3 RedBox forwarding on the ring. 46
5.4.4 RedBox receiving from an HSR port . 46
5.4.5 RedBox receiving from its link layer interface . 47
5.4.6 Redbox ProxyNodeTable handling . 47
5.4.7 RedBox CoS . 48
5.4.8 RedBox clock synchronization . 48
5.4.9 RedBox medium access . 48
5.5 QuadBox specification . 48
5.6 Duplicate Discard method. 48
5.7 Frame format for HSR . 48
5.7.1 Frame format for all frames . 48
5.7.2 HSR_Supervision frame . 50
5.8 Constants . 52
5.9 HSR service specification . 53
6 Protocol Implementation Conformance Statement (PICS) . 54
7 PRP/HSR Management Information Base (MIB) . 55
Annex A (normative) Use of IEC 61588 and IEEE C37.238 for IEC 62439-3 . 69
Annex B (informative) Deterministic medium access in HSR . 83
Bibliography . 84

Figure 1 – PRP example of general redundant network . 11
Figure 2 – PRP example of redundant network as two LANs (bus topology) . 12
Figure 3 – PRP example of redundant ring with SANs and DANPs . 12
Figure 4 – PRP with two DANPs communicating . 13
Figure 5 – PRP RedBox, transition from single to double LAN . 15
Figure 6 – PRP frame extended by an RCT. 16
Figure 7 – PRP VLAN-tagged frame extended by an RCT . 17
Figure 8 – PRP padded frame closed by an RCT . 17
Figure 9 – Duplicate Discard algorithm boundaries . 18
Figure 10 – HSR example of ring configuration for multicast traffic . 29
Figure 11 – HSR example of ring configuration for unicast traffic . 30
Figure 12 – HSR structure of a DANH . 31
Figure 13 – HSR example of topology using two independent networks . 32

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SIST EN 62439-3:2012
– 4 – 62439-3 © IEC:2012
Figure 14 – HSR example of peer coupling of two rings . 33
Figure 15 – HSR example of connected rings . 34
Figure 16 – HSR example of coupling two redundant PRP LANs to a ring . 35
Figure 17 – HSR example of coupling from a ring node to redundant PRP LANs . 36
Figure 18 – HSR example of coupling from a ring to two PRP LANs . 37
Figure 19 – HSR example of coupling three rings to one PRP LAN . 38
Figure 20 – HSR example of meshed topology . 39
Figure 21 – HSR structure of a RedBox . 40
Figure 22 – HSR frame without a VLAN tag . 49
Figure 23 – HSR frame with VLAN tag . 49
Figure 24 – HSR node with management counters . 53
Figure 25 – HSR RedBox with management counters . 54
Figure A.1 – PTP one-step clock synchronization and delay measurement . 71
Figure A.2 – PTP two-step clock synchronization and delay measurement . 72
Figure A.3 – Two-step and one-step transparent clocks translator . 73
Figure A.4 – Two-step to one-step translation . 73
Figure A.5 – Connection of a Grandmaster Clock to an Ordinary Clock over PRP . 74
Figure A.6 – HSR with one GMC . 76
Figure A.7 – PTP messages sent and received by an HSR node (one-step) . 77
Figure A.8 – PTP messages sent and received by an HSR node (two-step) . 78
Figure A.9 – Attachment of a GMC to an HSR ring through a RedBox . 80
Figure A.10 – PRP to HSR coupling by Transparent Clocks . 81
Figure A.11 – PRP to HSR coupling by BCs . 82

Table 1 – NodesTable attributes . 22
Table 2 – PRP_Supervision frame with no VLAN tag. 25
Table 3 – PRP_Supervision frame with (optional) VLAN tag . 26
Table 4 – PRP constants . 28
Table 5 – HSR_Supervision frame with no VLAN tag . 50
Table 6 – HSR_Supervision frame with optional VLAN tag . 51
Table 7 – HSR Constants . 52

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SIST EN 62439-3:2012
62439-3 © IEC:2012 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INDUSTRIAL COMMUNICATION NETWORKS –
HIGH AVAILABILITY AUTOMATION NETWORKS –

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

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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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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 62439-3 has been prepared by subcommittee 65C: Industrial
networks, of IEC technical committee 65: Industrial-process measurement, control and
automation.
This second edition cancels and replaces the first edition published in 2010. This edition
constitutes a technical revision. The main changes with respect to the previous edition are
listed below:
– specification of the interconnection of PRP and HSR networks;
– introduction of a suffix for PRP frames;
– clarification and modification of specifications to ensure interoperability;
– slackening of the specifications to allow different implementations;
– consideration of clock synchronization according to IEC 61588;
– introduction of test modes to simplify testing and maintenance.

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SIST EN 62439-3:2012
– 6 – 62439-3 © IEC:2012
The text of this standard is based on the following documents:
FDIS Report on voting
65C/687/FDIS 65C/705/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 International Standard is to be read in conjunction with IEC 62439-1:2011.
A list of the IEC 62439 series can be found, under the general title Industrial communication
networks – High availability automation networks, on the IEC website.
This publication has been drafted in accordance with ISO/IEC Directives, Part 2.
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.

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SIST EN 62439-3:2012
62439-3 © IEC:2012 – 7 –
0 INTRODUCTION
0.1 General
IEC 62439-3 standard belongs to IEC 62439 series, Industrial communication networks – High
availability automation networks, specifying the HSR and PRP redundancy protocols, and was
adopted by TC57 WG10 as the redundancy method for demanding substation automation
networks based on IEC 61850 series, introducing new requirements.
0.2 Changes with respect to the previous edition
The major changes with respect to IEC 62439-3:2010 are listed below.
Aligning the sequence number between PRP and HSR, to enable coupling of HSR and PRP
networks and simplify the implementation of dual-mode nodes in hardware. At the same time,
introduce a suffix in the PRP Redundancy Control Trailer to allow better identification, future
extensions and coexistence with other protocols that also happen to use a trailer. This change
is not backwards-compatible, so means are provided to identify the version and ensure that
the networks are homogeneous.
Removing all implementation restrictions on the Duplicate Discard algorithm (especially
references to the drop window algorithm and references to connection orientation) since other
methods such as hash tables can be used.
Removing the purging of the duplicate table. Replace this specific method by requiring that
any Duplicate Discard algorithm provides a mechanism to remove old entries, thus ensuring
that a node can properly reboot.
Making node tables optional for simple nodes to simplify hardware implementation.
Suppre
...