SIST EN 61784-3:2010
(Main)Industrial communication networks - Profiles - Part 3: Functional safety fieldbuses (IEC 61784-3:2010)
Industrial communication networks - Profiles - Part 3: Functional safety fieldbuses (IEC 61784-3:2010)
This part of the IEC 61784-3 series explains some common principles than can be used in the transmission of safety-relevant messages among participants within a distributed network using fieldbus technology in accordance with the requirements of IEC 61508 series1 for functional safety. These principles can be used in various industrial applications such as process control, manufacturing automation and machinery. This part2 and the IEC 61784-3-x parts specify several functional safety communication profiles based on the communication profiles and protocol layers of the fieldbus technologies in IEC 61784-1, IEC 61784-2 and the IEC 61158 series. NOTE 1 Other safety-related communication systems meeting the requirements of IEC 61508 series may exist that are not included in this standard. NOTE 2 It does not cover electrical safety and intrinsic safety aspects. Electrical safety relates to hazards such as electrical shock. Intrinsic safety relates to hazards associated with potentially explosive atmospheres. All systems are exposed to unauthorized access at some point of their life cycle. Additional measures need to be considered in any safety-related application to protect fieldbus systems against unauthorized access. The IEC 62443 series will address many of these issues; the relationship with the IEC 62443 series is detailed in a dedicated subclause of this part. NOTE 3 Additional profile specific requirements for security may also be specified in IEC 61784-43 [10]. NOTE 4 Implementation of a functional safety communication profile according to this part in a device is not sufficient to qualify it as a safety device, as defined in IEC 61508 series. NOTE 5 The resulting SIL claim of a system depends on the implementation of the selected functional safety communication profile within this system.
Industrielle Kommunikationsnetze - Profile - Teil 3: Funktional sichere Übertragung bei Feldbussen - Allgemeine Regeln und Profilfestlegungen (IEC 61784-3:2010)
Réseaux de communication industriels - Partie 3: Bus de terrain à sécurité fonctionnelle - Règles générales et définitions des profils (CEI 61784-3:2010)
La CEI 61784-3:2010 définit des principes communs pouvant être appliqués pour la transmission des messages propres à la sécurité entre les participants d'un réseau réparti, en utilisant la technologie de bus de terrain conformément aux exigences de la série CEI 61508 concernant la sécurité fonctionnelle. Ces principes peuvent être utilisés dans diverses applications industrielles, telles que la commande de processus, l'usinage automatique et les machines. Cette seconde édition annule et remplace la première édition parue en 2007 et constitue une révision technique. Les principales modifications par rapport à l'édition précédente sont:
- clarifications et explications complémentaires des exigences, références actualisées;
- actualisations des définitions et exigences par rapport à la nouvelle édition de la CEI 61508;
- ajout d'une nouvelle Annexe D informative fournissant une ligne directrice relative à l'évaluation;
- actualisations des parties pour les CPF 1, CPF 2, CPF 3, CPF 6 (détails fournis dans les parties);
- ajout de nouvelles parties pour les CPF 8, CPF 12, CPF 13, CPF 14;
- dans les parties CPF, ajout d'une annexe afin de fournir des informations concernant les laboratoires d'essais, en vue d'une vérification par des essais et d'une validation de la conformité des produits FSCP.
La présente version bilingue, correspond à la version anglaise monolingue publié en 2010-07.
Industrijska komunikacijska omrežja - Profili - 3. del: Funkcijska varnost procesnih vodil (IEC 61784-3:2010)
Ta del serije IEC 61784-3 razlaga nekatera skupna načela, ki se jih lahko uporabi pri prenosu za varnost pomembnih sporočil med udeleženci, v okviru porazdeljenega omrežja z uporabo tehnologije procesnih vodil v skladu z zahtevami IEC 61508 serije 1 za funkcijsko varnost. Ta načela se lahko uporabljajo pri različnih industrijskih uporabah, kot so procesni nadzor, proizvodnja avtomatizacija in stroji. Ta del 2 in deli IEC 61784-3-x določajo več komunikacijskih profilov za funkcijsko varnost, osnovanih na komunikacijskih profilih, ter protokolne plasti procesnih vodil v serijah IEC 61784-1, IEC 61784-2 in IEC 61158. OPOMBA 1: Drugi z varnostjo povezani komunikacijski sistemi, ki izpolnjujejo zahteva serije IEC 61508, so lahko prisotni, ki niso vključeni v ta standard. OPOMBA 2: Ne zajema električne varnosti in pripadajočih varnostnih vidikov. Električna varnost je povezana z nevarnostmi kot električni šok. Notranja varnost se nanaša na nevarnosti, ki so povezane s potencialno eksplozivnimi atmosferami. Vsi sistemi so izpostavljeni nepooblaščenemu dostopu na neki točki svojega življenjskega cikla. Treba je preučiti dodatne ukrepe pri kateri koli z varnostjo povezani uporabi za varovanje sistemov procesnih vodil pred nepooblaščenim dostopom Serije IEC 62443 bodo naslovile številna izmed teh vprašanja; odnos s serijami IEC 62443 je podrobno opisan v namenski podklavzuli tega dela. OPOMBA 3: Dodatne zahteve za varnost, značilne za profile, so lahko opredeljene tudi v IEC 61784-43 [10]. OPOMBA 4: Izvedba funkcijske varnosti komunikacijskega profila v skladu s tem delom v napravi ne zadostuje temu, da bi ustrezala varnostni napravi, kot je opredeljena v serijah 61508. OPOMBA 5: Izhajajoča SIL zahteva sistema je odvisna od izvedbe izbrane funkcijske varnosti komunikacijskega profila znotraj sistema.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 61784-3:2010
01-oktober-2010
1DGRPHãþD
kSIST FprEN 61784-3:2009/kFprA1:2009
SIST EN 61784-3:2008
Industrijska komunikacijska omrežja - Profili - 3. del: Funkcijska varnost procesnih
vodil (IEC 61784-3:2010)
Industrial communication networks - Profiles - Part 3: Functional safety fieldbuses (IEC
61784-3:2010)
Industrielle Kommunikationsnetze - Profile - Teil 3: Funktional sichere Übertragung bei
Feldbussen - Allgemeine Regeln und Profilfestlegungen (IEC 61784-3:2010)
Réseaux de communication industriels - Partie 3: Bus de terrain à sécurité fonctionnelle -
Règles générales et définitions des profils (CEI 61784-3:2010)
Ta slovenski standard je istoveten z: EN 61784-3:2010
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.05 9HþVORMQHXSRUDEQLãNH Multilayer applications
UHãLWYH
SIST EN 61784-3:2010 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 61784-3:2010
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SIST EN 61784-3:2010
EUROPEAN STANDARD
EN 61784-3
NORME EUROPÉENNE
August 2010
EUROPÄISCHE NORM
ICS 25.040.40; 35.100.05 Supersedes EN 61784-3:2008
English version
Industrial communication networks -
Profiles -
Part 3: Functional safety fieldbuses -
General rules and profile definitions
(IEC 61784-3:2010)
Réseaux de communication industriels - Industrielle Kommunikationsnetze -
Partie 3: Bus de terrain à sécurité Profile -
fonctionnelle - Teil 3: Funktional sichere Übertragung bei
Règles générales et définitions des profils Feldbussen -
(CEI 61784-3:2010) Allgemeine Regeln und Profilfestlegungen
(IEC 61784-3:2010)
This European Standard was approved by CENELEC on 2010-07-01. 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 Central Secretariat 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 Central Secretariat 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
© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61784-3:2010 E
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SIST EN 61784-3:2010
EN 61784-3:2010 - 2 -
Foreword
The text of document 65C/591A/FDIS, future edition 2 of IEC 61784-3, 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 was approved by CENELEC as EN 61784-3 on 2010-07-01.
This European Standard supersedes EN 61784-3:2008.
The main technical changes with respect to EN 61784-3:2008 are listed below:
– clarifications and additional explanations for requirements, updated references;
– updates of definitions and requirements in relation with the new edition of EN 61508;
– addition of a new informative Annex D providing an assessment guideline;
– updates in parts for CPF 1, CPF 2, CPF 3, CPF 6 (details provided in the parts);
– addition of new parts for CPF 8, CPF 12, CPF 13, CPF 14;
– in CPF parts, addition of an annex to provide information about test laboratories for testing and
validating conformance of FSCP products.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-07-01
Annex ZA has been added by CENELEC.
__________
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SIST EN 61784-3:2010
- 3 - EN 61784-3:2010
Endorsement notice
The text of the International Standard IEC 61784-3:2010 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 60204-1 NOTE Harmonized as EN 60204-1.
IEC 61496 series NOTE Harmonized in EN 61496 series (partially modified).
IEC 61508-4:2010 NOTE Harmonized as EN 61508-4:2010 (not modified).
IEC 61508-5:2010 NOTE Harmonized as EN 61508-5:2010 (not modified).
IEC 61508-6:2010 NOTE Harmonized as EN 61508-6:2010 (not modified).
IEC 61511 series NOTE Harmonized in EN 61511 series (not modified).
IEC 61800-5-2 NOTE Harmonized as EN 61800-5-2.
IEC 62061 NOTE Harmonized as EN 62061.
ISO 10218-1 NOTE Harmonized as EN ISO 10218-1.
ISO 12100-1 NOTE Harmonized as EN ISO 12100-1.
ISO 13849-1 NOTE Harmonized as EN ISO 13849-1.
ISO 13849-2 NOTE Harmonized as EN ISO 13849-2.
ISO 14121 NOTE Harmonized as EN ISO 14121.
__________
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SIST EN 61784-3:2010
EN 61784-3:2010 - 4 -
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 61131-2 - Programmable controllers - EN 61131-2 -
Part 2: Equipment requirements and tests
IEC 61158 Series Industrial communication networks - EN 61158 Series
Fieldbus specifications
IEC 61326-3-1 - Electrical equipment for measurement, EN 61326-3-1 -
control and laboratory use -
EMC requirements -
Part 3-1: Immunity requirements for safety-
related systems and for equipment intended to
perform safety-related functions (functional
safety) - General industrial applications
IEC 61326-3-2 - Electrical equipment for measurement, EN 61326-3-2 -
control and laboratory use -
EMC requirements -
Part 3-2: Immunity requirements for safety-
related systems and for equipment intended to
perform safety-related functions (functional
safety) - Industrial applications with specified
electromagnetic environment
IEC 61508 Series Functional safety of EN 61508 Series
electrical/electronic/programmable electronic
safety-related systems
IEC 61508-1 2010 Functional safety of EN 61508-1 2010
electrical/electronic/programmable electronic
safety-related systems -
Part 1: General requirements
IEC 61508-2 - Functional safety of EN 61508-2 -
electrical/electronic/programmable electronic
safety-related systems -
Part 2: Requirements for
electrical/electronic/programmable electronic
safety-related systems
IEC 61784-1 - Industrial communication networks - Profiles - EN 61784-1 -
Part 1: Fieldbus profiles
IEC 61784-2 - Industrial communication networks - Profiles - EN 61784-2 -
Part 2: Additional fieldbus profiles for real-time
networks based on ISO/IEC 8802-3
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SIST EN 61784-3:2010
- 5 - EN 61784-3:2010
Publication Year Title EN/HD Year
IEC 61784-3-1 - Industrial communication networks - Profiles - EN 61784-3-1 -
Part 3-1: Functional safety fieldbuses -
Additional specifications for CPF 1
IEC 61784-3-2 - Industrial communication networks - Profiles - EN 61784-3-2 -
Part 3-2: Functional safety fieldbuses -
Additional specifications for CPF 2
IEC 61784-3-3 - Industrial communication networks - Profiles - EN 61784-3-3 -
Part 3-3: Functional safety fieldbuses -
Additional specifications for CPF 3
IEC 61784-3-6 - Industrial communication networks - Profiles - EN 61784-3-6 -
Part 3-6: Functional safety fieldbuses -
Additional specifications for CPF 6
IEC 61784-3-8 - Industrial communication networks - Profiles - EN 61784-3-8 -
Part 3-8: Functional safety fieldbuses -
Additional specifications for CPF 8
IEC 61784-3-12 - Industrial communication networks - Profiles - EN 61784-3-12 -
Part 3-12: Functional safety fieldbuses -
Additional specifications for CPF 12
IEC 61784-3-13 - Industrial communication networks - Profiles - EN 61784-3-13 -
Part 3-13: Functional safety fieldbuses -
Additional specifications for CPF 13
IEC 61784-3-14 - Industrial communication networks - Profiles - EN 61784-3-14 -
Part 3-14: Functional safety fieldbuses -
Additional specifications for CPF 14
IEC 61784-5 Series Industrial communication networks - Profiles - EN 61784-5 Series
Part 5: Installation of fieldbuses - Installation
profiles for CPF x
IEC 61918 - Industrial communication networks - EN 61918 -
Installation of communication networks in
industrial premises
IEC 62280-1 2002 Railway applications - Communication, - -
signalling and processing systems -
Part 1: Safety-related communication in
closed transmission systems
IEC 62443 Series Industrial communication networks - Network - -
and system security
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SIST EN 61784-3:2010
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SIST EN 61784-3:2010
IEC 61784-3
®
Edition 2.0 2010-06
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Profiles –
Part 3: Functional safety fieldbuses – General rules and profile definitions
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XA
ICS 25.040.40; 35.100.05 ISBN 978-2-88910-948-7
® Registered trademark of the International Electrotechnical Commission
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SIST EN 61784-3:2010
– 2 – 61784-3 © IEC:2010(E)
CONTENTS
FOREWORD.6
0 Introduction .8
0.1 General .8
0.2 Patent declaration .10
1 Scope.11
2 Normative references .11
3 Terms, definitions, symbols, abbreviated terms and conventions .13
3.1 Terms and definitions .13
3.1.1 Common terms and definitions .13
3.1.2 CPF 1: Additional terms and definitions .18
3.1.3 CPF 2: Additional terms and definitions .18
3.1.4 CPF 3: Additional terms and definitions .18
3.1.5 CPF 6: Additional terms and definitions .18
3.1.6 CPF 8: Additional terms and definitions .18
3.1.7 CPF 12: Additional terms and definitions .18
3.1.8 CPF 13: Additional terms and definitions .18
3.1.9 CPF 14: Additional terms and definitions .18
3.2 Symbols and abbreviated terms.19
3.2.1 Common symbols and abbreviated terms .19
3.2.2 CPF 1: Additional symbols and abbreviated terms .19
3.2.3 CPF 2: Additional symbols and abbreviated terms .19
3.2.4 CPF 3: Additional symbols and abbreviated terms .19
3.2.5 CPF 6: Additional symbols and abbreviated terms .20
3.2.6 CPF 8: Additional symbols and abbreviated terms .20
3.2.7 CPF 12: Additional symbols and abbreviated terms .20
3.2.8 CPF 13: Additional symbols and abbreviated terms .20
3.2.9 CPF 14: Additional symbols and abbreviated terms .20
4 Conformance.20
5 Basics of safety-related fieldbus systems .21
5.1 Safety function decomposition.21
5.2 Communication system .21
5.2.1 General .21
5.2.2 IEC 61158 fieldbuses .21
5.2.3 Communication channel types .22
5.2.4 Safety function response time.22
5.3 Communication errors .23
5.3.1 General .23
5.3.2 Corruption .23
5.3.3 Unintended repetition .23
5.3.4 Incorrect sequence .23
5.3.5 Loss .24
5.3.6 Unacceptable delay .24
5.3.7 Insertion .24
5.3.8 Masquerade .24
5.3.9 Addressing .24
5.4 Deterministic remedial measures.24
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SIST EN 61784-3:2010
61784-3 © IEC:2010(E) – 3 –
5.4.1 General .24
5.4.2 Sequence number .25
5.4.3 Time stamp .25
5.4.4 Time expectation .25
5.4.5 Connection authentication .25
5.4.6 Feedback message .25
5.4.7 Data integrity assurance.25
5.4.8 Redundancy with cross checking .25
5.4.9 Different data integrity assurance systems .26
5.5 Relationships between errors and safety measures .26
5.6 Data integrity considerations .27
5.6.1 Calculation of the residual error rate.27
5.6.2 Residual error rate and SIL.29
5.7 Relationship between functional safety and security .29
5.8 Boundary conditions and constraints .30
5.8.1 Electrical safety.30
5.8.2 Electromagnetic compatibility (EMC) .30
5.9 Installation guidelines.30
5.10 Safety manual .30
5.11 Safety policy .30
6 Communication Profile Family 1 (FOUNDATION™ Fieldbus) – Profiles for functional
safety .31
6.1 Functional Safety Communication Profile 1/1.31
6.2 Technical overview.31
7 Communication Profile Family 2 (CIP™) – Profiles for functional safety.32
7.1 Functional Safety Communication Profile 2/1.32
7.2 Technical overview.32
8 Communication Profile Family 3 (PROFIBUS™, PROFINET™) – Profiles for
functional safety .34
8.1 Functional Safety Communication Profile 3/1.34
8.2 Technical overview.34
9 Communication Profile Family 6 (INTERBUS®) – Profiles for functional safety .36
9.1 Functional Safety Communication Profile 6/7.36
9.2 Technical overview.37
10 Communication Profile Family 8 (CC-Link™) – Profiles for functional safety .38
10.1 Functional Safety Communication Profile 8/1.38
10.2 Technical overview.38
11 Communication Profile Family 12 (EtherCAT™) – Profiles for functional safety .39
11.1 Functional Safety Communication Profile 12/1.39
11.2 Technical overview.39
12 Communication Profile Family 13 (Ethernet POWERLINK™) – Profiles for
functional safety .40
12.1 Functional Safety Communication Profile 13/1.40
12.2 Technical overview.40
13 Communication Profile Family 14 (EPA®) – Profiles for functional safety.41
13.1 Functional Safety Communication Profile 14/1.41
13.2 Technical overview.42
Annex A (informative) Example functional safety communication models .43
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SIST EN 61784-3:2010
– 4 – 61784-3 © IEC:2010(E)
A.1 General .43
A.2 Model A.43
A.3 Model B.43
A.4 Model C.44
A.5 Model D.44
Annex B (informative) A safety communication channel model using CRC-based error
checking .46
B.1 Overview .46
B.2 Channel model for calculations.46
B.3 Cyclic redundancy checking .47
B.3.1 General .47
B.3.2 Considerations concerning CRC polynomials .49
Annex C (informative) Structure of technology-specific parts .51
Annex D (informative) Assessment guideline .53
D.1 Overview .53
D.2 Channel types .53
D.2.1 General .53
D.2.2 Black channel.53
D.2.3 White channel .53
D.3 Data integrity considerations for white channel approaches.54
D.3.1 General .54
D.3.2 Model B and C .54
D.3.3 Model A and D .55
D.4 Verification of safety measures.55
D.4.1 General .55
D.4.2 Implementation .56
D.4.3 "De-energize to trip" principle .56
D.4.4 Safe state .56
D.4.5 Transmission errors.56
D.4.6 Safety reaction and response times .56
D.4.7 Combination of measures .56
D.4.8 Absence of interference.57
D.4.9 Additional fault causes (white channel) .57
D.4.10 Reference test beds and operational conditions.57
D.4.11 Conformance tester .57
Bibliography.58
Table 1 – Overview of the effectiveness of the various measures on the possible errors.27
Table 2 – Definition of items used for calculation of the residual error rate.28
Table 3 – Relationship of residual error rate to SIL level .29
Table 4 – Overview of profile identifier usable for FSCP 6/7.37
Table B.1 – Example dependency d and block length n.49
min
Table C.1 – Common subclause structure for technology-specific parts .51
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SIST EN 61784-3:2010
61784-3 © IEC:2010(E) – 5 –
Figure 1 – Relationships of IEC 61784-3 with other standards (machinery) .8
Figure 2 – Relationships of IEC 61784-3 with other standards (process).9
Figure 3 – Safety communication as a part of a safety function.21
Figure 4 – Example model of a functional safety communication system .22
Figure 5 – Example of safety function response time components.23
Figure 6 – Example application .29
Figure 7 – Scope of FSCP 1/1 .32
Figure 8 – Relationship of Safety Validators .33
Figure 9 – Basic communication preconditions for FSCP 3/1 .35
Figure 10 – Structure of a FSCP 3/1 safety PDU.35
Figure 11 – Safe communication modes.36
Figure 12 – FSCP 6/7 communication preconditions .37
Figure 13 – Basic FSCP 12/1 system .39
Figure 14 – Producer consumer example .41
Figure 15 – Client server example .41
Figure 16 – FSCP 14/1 safety communication architecture .42
Figure A.1 – Model A .43
Figure A.2 – Model B .44
Figure A.3 – Model C .44
Figure A.4 – Model D .45
Figure B.1 – Communication channel with perturbation.46
Figure B.2 – Binary symmetric channel (BSC).47
Figure B.3 – Example of a block with message and CRC bits (redundancy code).48
Figure B.4 – Block codes for error detection .48
Figure B.5 – Proper and improper CRC polynomials .49
Figure D.1 – Basic Markov model .
...
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