SIST EN 62439-7:2012

SLOVENSKI STANDARD
SIST EN 62439-7:2012
01-maj-2012
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Industrial communication networks - High availability automation networks - Part 7: Ring-
based Redundancy Protocol (RRP) (IEC 62439-7:2011)
Industrielle Kommunikationsnetze - Hochverfügbare Automatisierungsnetze - Teil 7:
Protokoll für ringbasierte Redundanz (RRP) (IEC 62439-7:2011)
Réseaux de communication industriels - Réseau de haute disponibilité pour l'automation
- Partie 7: Protocole de redondance pour réseau en anneau (RRP) (CEI 62439-7:2011)
Ta slovenski standard je istoveten z: EN 62439-7:2012
ICS:
25.040.01 Sistemi za avtomatizacijo v Industrial automation
industriji na splošno systems in general
35.110 Omreževanje Networking
SIST EN 62439-7:2012 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62439-7:2012

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SIST EN 62439-7:2012

EUROPEAN STANDARD
EN 62439-7

NORME EUROPÉENNE
March 2012
EUROPÄISCHE NORM

ICS 25.040; 35.040


English version


Industrial communication networks -
High availability automation networks -
Part 7: Ring-based Redundancy Protocol (RRP)
(IEC 62439-7:2011)


Réseaux de communication industriels -  Industrielle Kommunikationsnetze -
Réseau de haute disponibilité pour Hochverfügbare Automatisierungsnetze -
l'automation - Teil 7: Protokoll für ringbasierte
Partie 7: Protocole de redondance pour Redundanz (RRP)
réseau en anneau (RRP) (IEC 62439-7:2011)
(CEI 62439-7:2011)





This European Standard was approved by CENELEC on 2012-01-20. 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, 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 62439-7:2012 E

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SIST EN 62439-7:2012
EN 62439-7:2012 - 2 -
Foreword
The text of document 65C/668/FDIS, future edition 1 of IEC 62439-7, 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 62439-7:2012.

The following dates are fixed:
(dop) 2012-10-20
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2015-01-20
• 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 62439-7:2011 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 61158 series NOTE  Harmonized in EN 61158 series.

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SIST EN 62439-7:2012
- 3 - EN 62439-7:2012

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 62439-1 2010 Industrial communication networks - High EN 62439-1 2010
availability automation networks -
Part 1: General concepts and calculation
methods


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

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SIST EN 62439-7:2012

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SIST EN 62439-7:2012

IEC 62439-7
®

Edition 1.0 2011-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside


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

Réseaux de communication industriels – Réseaux de haute disponibilite pour
l'automation –
Partie 7: Protocole de redondance pour réseau en anneau (RRP)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XC
ICS 25.040; 35.040 ISBN 978-2-88912-838-9

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

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SIST EN 62439-7:2012
– 2 – 62439-7 © IEC:2011
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, abbreviations, acronyms, and conventions . 9
3.1 Terms and definitions . 9
3.2 Abbreviations and acronyms . 10
3.3 Conventions . 10
4 RRP overview . 11
4.1 General . 11
4.2 Frame forwarding and receiving control . 11
4.2.1 General . 11
4.2.2 Normal Device (ND) and Gateway Device (GWD) . 11
4.2.3 Behaviours of the General Device (GD) . 12
4.2.4 Behaviours of the Line Network Manager (LNM) . 13
4.2.5 Behaviours of the Ring Network Managers (RNMs) . 13
4.3 Link status monitoring . 14
4.4 Error detection . 14
4.5 Plug and play . 14
4.6 Network management information base (NMIB) management . 14
4.7 Network recovery . 15
4.8 Automatic network configuration . 15
4.9 RRP basic operating principle . 15
5 RRP redundancy behaviours . 17
5.1 Network topology. 17
5.2 Network recovery in ring network . 18
5.2.1 General . 18
5.2.2 Link fault between neighbouring devices . 20
5.2.3 Link fault of remote device . 21
5.2.4 Device fault on a RNM . 22
5.3 Automatic Ring Network Manager (RNM) election procedure . 23
5.3.1 General . 23
5.3.2 Primary RNM (RNMP). 23
5.3.3 Secondary RNM (RNMS) . 24
5.4 Path management . 24
5.4.1 General . 24
5.4.2 Path in a line topology network . 24
5.4.3 Path in a ring topology network . 25
5.5 Device address collision . 26
6 RRP class specification . 27
6.1 General . 27
6.2 Template . 27
6.3 Attributes. 29
7 RRP services specification . 34
7.1 Set device information . 34
7.2 Get device information . 36

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SIST EN 62439-7:2012
62439-7 © IEC:2011 – 3 –
7.3 Get network information . 38
7.4 Get path table information . 40
8 RRP protocol specification. 42
8.1 General . 42
8.2 Ethernet header . 43
8.2.1 Preamble . 43
8.2.2 Start frame delimiter . 43
8.2.3 Destination MAC address . 43
8.2.4 Source MAC address . 43
8.2.5 Length/Type . 43
8.3 Encoding of RRP_FrameHDR . 43
8.3.1 Version and length . 43
8.3.2 DST_addr . 44
8.3.3 SRC_addr. 45
8.3.4 Frame Control (FC) . 45
8.4 Encoding of data and pad . 47
8.4.1 General . 47
8.4.2 Encoding of FamilyReq . 47
8.4.3 Encoding of FamilyRes . 48
8.4.4 Encoding of MediaLinked . 48
8.4.5 Encoding of AdvThis . 49
8.4.6 Encoding of LineStart . 49
8.4.7 Encoding of RingStart . 50
8.4.8 Encoding of AckRNMS . 51
8.4.9 Encoding of CheckRNMS . 52
8.5 Frame Check Sequence (FCS) . 52
9 RRP protocol machine . 52
9.1 Protocol state machine description . 52
9.2 Local parameters and variables for protocol state . 54
9.2.1 General . 54
9.2.2 Variables to support local device information management . 54
9.2.3 Variables to support network information management . 55
9.2.4 Variables to support device path information management . 55
9.2.5 Variables of Received RRP Frame . 55
9.2.6 Local variables for protocol state . 56
9.2.7 Constants for protocol state . 56
9.3 State transitions . 57
9.4 Function descriptions . 70
10 RRP Management Information Base (MIB) . 75
Bibliography . 81

Figure 1 – Forwarding and receiving Ethernet frames . 11
Figure 2 – Structures of ND and GWD . 12
Figure 3 – LNM forwarding control . 13
Figure 4 – RNM forwarding control . 13
Figure 5 – Link status information . 14
Figure 6 – A device operation in initialization phase . 15

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SIST EN 62439-7:2012
– 4 – 62439-7 © IEC:2011
Figure 7 – Devices operation in line network establishing phase . 16
Figure 8 – Extension of line network operation . 16
Figure 9 – Ring network establishment operation . 17
Figure 10 – Ring to line network change operation . 17
Figure 11 – Ring topology . 18
Figure 12 – Link fault between neighbouring devices . 21
Figure 13 – Link fault of remote device . 22
Figure 14 – Device fault on a RNM . 22
Figure 15 – Path management in a line topology network. 24
Figure 16 – Path management in a ring topology network . 25
Figure 17 – RRP device address collision in a ring network . 26
Figure 18 – Common MAC frame format for RRP DLPDU . 43
Figure 19 – RRP protocol state machine . 53

Table 1 – RRP network recovery parameter . 19
Table 2 – Parameters for calculation . 19
Table 3 – Path table of Device1 in a line topology network . 24
Table 4 – Path table of Device4 in a line topology network . 25
Table 5 – Path table of Device1 in a ring topology network . 25
Table 6 – Path table of Device3 in a ring topology network . 26
Table 7 – Device address collision information. 27
Table 8 – Parameters of set device information service . 34
Table 9 – Parameters of get device information service . 36
Table 10 – Parameters of get network information service . 38
Table 11 – Parameters of get path table information service . 40
Table 12 – RRP Length/Type field . 43
Table 13 – Version . 44
Table 14 – DST_addr . 44
Table 15 – SRC_addr . 45
Table 16 – Network control message type . 45
Table 17 – Type of service . 45
Table 18 – Priority . 46
Table 19 – Validation of extension code . 46
Table 20 – Encoding of FamilyReq frame . 47
Table 21 – Encoding of FamilyRes frame . 48
Table 22 – Encoding of MediaLinked frame . 48
Table 23 – Encoding of AdvThis frame . 49
Table 24 – Encoding of LineStart frame . 49
Table 25 – Encoding of RingStart frame . 50
Table 26 – Encoding of AckRNMS frame . 51
Table 27 – Encoding of CheckRNMS frame . 52
Table 28 – Variables to support device information management . 54
Table 29 – Variables to support managing network information . 55

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SIST EN 62439-7:2012
62439-7 © IEC:2011 – 5 –
Table 30 – Variables to support device path information management . 55
Table 31 – Variables of Received RRP Frame . 55
Table 32 – Local variables for protocol state . 56
Table 33 – Constants for protocol state . 56
Table 34 – RRP State transitions . 57
Table 35 – RRP Function descriptions . 70

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SIST EN 62439-7:2012
– 6 – 62439-7 © IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INDUSTRIAL COMMUNICATION NETWORKS –
HIGH AVAILABILITY AUTOMATION NETWORKS –

Part 7: Ring-based Redundancy Protocol (RRP)


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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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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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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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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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 62439-7 has been prepared by subcommittee 65C: Industrial
Networks, of IEC technical committee 65: Industrial-process measurement, control and
automation.
The text of this standard is based on the following documents:
FDIS Report on voting
65C/668/FDIS 65C/673/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 62439-1:2010, Industrial
communication networks – High availability automation networks – Part 1: General concepts
and calculation methods.

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SIST EN 62439-7:2012
62439-7 © IEC:2011 – 7 –
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts of the IEC 62439 series, under the general title Industrial communication
networks – High availability automation networks, can be found on the IEC web site.
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.

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.

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SIST EN 62439-7:2012
– 8 – 62439-7 © IEC:2011
INTRODUCTION
The IEC 62439 series specifies relevant principles for high availability networks that meet the
requirements for industrial automation networks.
In the fault-free state of the network, the protocols of the IEC 62439 series provide
ISO/IEC 8802-3:2000 (IEEE 802.3) with compatible, reliable data communications, and
preserve determinism in real-time data communications. In cases of fault, removal, and
insertion of a component, they provide deterministic recovery times.
These protocols retain fully the Ethernet communication capabilities typically used in the
office world, to ensure that software that relies on these protocols will remain applicable.
The market is in need of several network solutions, each with different performance
characteristics and functional capabilities, meeting diverse application requirements. These
solutions support different redundancy topologies and mechanisms, which are introduced in
IEC 62439-1 and specified in the companion International Standards. IEC 62439-1 also
di
...