SIST EN 61784-3-18:2011
(Main)Industrial communication networks - Profiles - Part 3-18: Functionnal safety fieldbuses - Additional specifications for CPF 18 (IEC 61784-3-18:2011)
Industrial communication networks - Profiles - Part 3-18: Functionnal safety fieldbuses - Additional specifications for CPF 18 (IEC 61784-3-18:2011)
This part of the IEC 61784-3 series specifies a safety communication layer (services and protocol) based on CPF 18 of IEC 61784-2 and IEC 61158 Type 22. It identifies the principles for functional safety communications defined in IEC 61784-3 that are relevant for this safety communication layer. This part defines mechanisms for the transmission of safety-relevant messages among participants within a distributed network using fieldbus technology in accordance with the requirements of IEC 61508 series2 for functional safety. These mechanisms may be used in various industrial applications such as process control, manufacturing automation and machinery. This part provides guidelines for both developers and assessors of compliant devices and systems.
Industrielle Kommunikationsnetze - Profile - Teil 3-18: Funktional sichere Übertragung bei Feldbussen - Zusätzliche Festlegungen für die Kommunikationsprofilfamilie 18 (IEC 61784-3-18:2011)
Réseaux de communication industriels - Profils - Partie 3-18: Bus de terrain à sécurité fonctionnelle - Spécifications supplémentaires pour le CPF 18 (CEI 61784-3-18:2011)
La CEI 61784-3-18:2011 spécifie une couche de communication relative à la sécurité (services et protocole) fondée sur le CPF 18 de la CEI 61784-2 et le type 22 de la CEI 61158. Elle identifie les principes applicables aux communications de sécurité fonctionnelle définies dans la CEI 61784-3, et appropriés à cette couche de communication de sécurité.",PE
Industrijska komunikacijska omrežja - Profili - 3-18. del: Funkcijska varnost procesnih vodil - Dodatne specifikacije za CPF 18 (IEC 61784-3-18:2011)
Ta del serije IEC 61784-3 določa varnostno komunikacijsko plast (storitve in protokol) na osnovi CPF 18 IEC 61784-2 in IEC 61158 tipa 22. Določa načela za funkcijsko varnost komunikacij, opredeljena v IEC 61784-3, ki so pomembna za to varnostno komunikacijsko plast. Ta del opredeljuje mehanizme za prenos sporočil, pomembnih za varnost, med udeleženci v porazdeljenem omrežju z uporabo tehnologije vodil v skladu z zahtevami IEC 61508 serije 2 za funkcijsko varnost. Ti mehanizmi se lahko uporabljajo v različnih industrijskih aplikacijah, kot je procesni nadzor, proizvodna avtomatizacija in stroji. Ta del zagotavlja smernice za razvijalce in ocenjevalce skladnih pripomočkov in sistemov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 61784-3-18:2011
01-september-2011
Industrijska komunikacijska omrežja - Profili - 3-18. del: Funkcijska varnost
procesnih vodil - Dodatne specifikacije za CPF 18 (IEC 61784-3-18:2011)
Industrial communication networks - Profiles - Part 3-18: Functionnal safety fieldbuses -
Additional specifications for CPF 18 (IEC 61784-3-18:2011)
Industrielle Kommunikationsnetze - Profile - Teil 3-18: Funktional sichere Übertragung
bei Feldbussen - Zusätzliche Festlegungen für die Kommunikationsprofilfamilie 18 (IEC
61784-3-18:2011)
Réseaux de communication industriels - Profils - Partie 3-18: Bus de terrain à sécurité
fonctionnelle - Spécifications supplémentaires pour le CPF 18 (CEI 61784-3-18:2011)
Ta slovenski standard je istoveten z: EN 61784-3-18:2011
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.05 9HþVORMQHXSRUDEQLãNH Multilayer applications
UHãLWYH
SIST EN 61784-3-18:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 61784-3-18:2011
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SIST EN 61784-3-18:2011
EUROPEAN STANDARD
EN 61784-3-18
NORME EUROPÉENNE
July 2011
EUROPÄISCHE NORM
ICS 13.110; 25.040.40; 35.100.05
English version
Industrial communication networks -
Profiles -
Part 3-18: Functional safety fieldbuses -
Additional specifications for CPF 18
(IEC 61784-3-18:2011)
Réseaux de communication industriels - Industrielle Kommunikationsnetze -
Profils - Profile -
Partie 3-18: Bus de terrain à sécurité Teil 3-18: Funktional sichere Übertragung
fonctionnelle - bei Feldbussen -
Spécifications supplémentaires pour le Zusätzliche Festlegungen für die
CPF 18 Kommunikationsprofilfamilie 18
(CEI 61784-3-18:2011) (IEC 61784-3-18:2011)
This European Standard was approved by CENELEC on 2011-05-25. 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
© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61784-3-18:2011 E
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SIST EN 61784-3-18:2011
EN 61784-3-18:2011 - 2 -
Foreword
The text of document 65C/639/FDIS, future edition 1 of IEC 61784-3-18, 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 61784-3-18 on 2011-05-25.
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
(dop) 2012-02-25
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2014-05-25
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61784-3-18:2011 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.
1)
IEC 61131-6 NOTE Harmonized as EN 61131-6 .
IEC 61158 series NOTE Harmonized in EN 61158 series.
IEC 61326-3-1 NOTE Harmonized as EN 61326-3-1.
IEC 61326-3-2 NOTE Harmonized as EN 61326-3-2.
IEC 61496 series NOTE Harmonized in EN 61496 series.
IEC 61508-1:2010 NOTE Harmonized as EN 61508-1:2010.
IEC 61508-4:2010 NOTE Harmonized as EN 61508-4:2010.
IEC 61508-5:2010 NOTE Harmonized as EN 61508-5:2010.
IEC 61511 series NOTE Harmonized in EN 61511 series.
IEC 61784-1 NOTE Harmonized as EN 61784-1.
IEC 61784-5 series NOTE Harmonized in EN 61784-5 series.
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.
1)
At draft stage.
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SIST EN 61784-3-18:2011
- 3 - EN 61784-3-18:2011
ISO 13849-2 NOTE Harmonized as EN ISO 13849-2.
ISO 14121 NOTE Harmonized as EN ISO 14121.
__________
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SIST EN 61784-3-18:2011
EN 61784-3-18:2011 - 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 61158-3-22 - Industrial communication networks - Fieldbus - -
specifications -
Part 3-22: Data-link layer service definition -
Type 22 elements
IEC 61158-4-22 - Industrial communication networks - Fieldbus - -
specifications -
Part 4-22: Data-link layer protocol
specification - Type 22 elements
IEC 61158-5-22 - Industrial communication networks - Fieldbus - -
specifications -
Part 5-22: Application layer service definition -
Type 22 elements
IEC 61158-6-22 - Industrial communication networks - Fieldbus - -
specifications -
Part 6-22: Application layer protocol
specification - Type 22 elements
IEC 61508 Series Functional safety of EN 61508 Series
electrical/electronic/programmable electronic
safety-related systems
IEC 61508-2 2010 Functional safety of EN 61508-2 2010
electrical/electronic/programmable electronic
safety-related systems -
Part 2: Requirements for
electrical/electronic/programmable electronic
safety-related systems
IEC 61784-2 2010 Industrial communication networks - EN 61784-2 2010
Profiles -
Part 2: Additional fieldbus profiles for real-time
networks based on ISO/IEC 8802-3
IEC 61784-3 2010 Industrial communication networks - EN 61784-3 2010
Profiles -
Part 3: Functional safety fieldbuses - General
rules and profile definitions
IEC 61918 - Industrial communication networks - EN 61918 -
Installation of communication networks in
industrial premises
ISO/IEC 10731 - Information technology - Open Systems - -
Interconnection - Basic reference model -
Conventions for the definition of OSI services
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SIST EN 61784-3-18:2011
IEC 61784-3-18
®
Edition 1.0 2011-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Profiles
Part 3-18: Functional safety fieldbuses – Additional specifications for CPF 18
Réseaux de communication industriels – Profils
Partie 3-18: Bus de terrain de sécurité fonctionnelle – Spécifications
supplémentaires pour le CPF 18
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XB
ICS 13.110, 25.040.40, 35.100.05 ISBN 978-2-88912-475-6
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 61784-3-18:2011
– 2 – 61784-3-18 IEC:2011
CONTENTS
FOREWORD . 5
0 Introduction . 7
0.1 General . 7
0.2 Patent declaration . 9
1 Scope . 10
2 Normative references . 10
3 Terms, definitions, symbols, abbreviated terms and conventions . 11
3.1 Terms and definitions . 11
3.1.1 Common terms and definitions . 11
3.1.2 CPF 18: Additional terms and definitions . 15
3.2 Symbols and abbreviated terms. 16
3.2.1 Common symbols and abbreviated terms . 16
3.2.2 CPF 18: Additional symbols and abbreviated terms . 17
3.3 Conventions . 17
4 Overview of FSCP 18/1 (SafetyNET p™) . 19
4.1 General . 19
4.2 FSCP 18/1 . 19
5 General . 20
5.1 External documents providing specifications for the profile . 20
5.2 Safety functional requirements . 20
5.3 Safety measures . 20
5.4 Safety communication layer structure . 21
5.5 Relationships with FAL (and DLL, PhL) . 22
5.5.1 General . 22
5.5.2 Data Types . 22
6 Safety communication layer services . 22
6.1 General elements . 22
6.1.1 General . 22
6.1.2 Safety object dictionary . 22
6.1.3 Safety process data object (SPDO) . 22
6.1.4 Safety heartbeat (SHB) . 22
6.1.5 Safety delay monitoring (SDM) . 23
6.2 Communication relation . 23
7 Safety communication layer protocol . 24
7.1 Safety PDU format . 24
7.1.1 General . 24
7.1.2 Safety process data objects (SPDO) . 24
7.1.3 Safety heartbeat (SHB) . 26
7.1.4 Safety PDUs embedded in a Type 22 PDU . 28
7.2 Safety communication layer management (SALMT) . 28
7.3 Safety process data communication . 30
7.4 Safety heartbeat . 32
7.5 Delay monitoring . 33
8 Safety communication layer management . 34
8.1 Parameter handling . 34
8.2 Safety object dictionary . 34
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SIST EN 61784-3-18:2011
61784-3-18 IEC:2011 – 3 –
8.2.1 General . 34
8.2.2 Communication profile section . 35
8.2.3 Standardized device profile section . 51
9 System requirements . 51
9.1 Indicators and switches . 51
9.1.1 Indicator states and flash rates . 51
9.1.2 Indicators . 51
9.1.3 Switches . 52
9.2 Installation guidelines . 52
9.3 Safety function response time . 52
9.3.1 General . 52
9.3.2 Determination of FSCP 18/1 time expectation behavior . 53
9.3.3 Calculation of the worst case safety function response time . 53
9.4 Duration of demands . 53
9.5 Constraints for calculation of system characteristics . 53
9.5.1 Safety related constraints . 53
9.5.2 Probabilistic considerations . 55
9.6 Maintenance . 55
9.7 Safety manual . 55
10 Assessment . 55
Annex A (informative) Additional information for functional safety communication
profiles of CPF 18 . 57
Annex B (informative) Information for assessment of the functional safety
communication profiles of CPF 18 . 58
Bibliography . 59
Table 1 – Object definition . 18
Table 2 – Safety PDU element definition . 18
Table 3 – Communication errors and detection measures . 21
Table 4 – SPDO PDU structure . 25
Table 5 – SHB request PDU structure . 26
Table 6 – SHB response PDU structure . 27
Table 7 – SHB safety communication layer state encoding . 27
Table 8 – SALMT commands . 28
Table 9 – System states of SALMT state machine. 29
Table 10 – State transitions SALMT state machine . 30
Table 11 – System states of RxSPDO state machine . 31
Table 12 – State transitions RxSPDO state machine . 31
Table 13 – Timeouts . 32
Table 14 – Safety object dictionary structure . 34
Table 15 – Objects of communication section . 35
Table 16 – Device type . 36
Table 17 – Safety ID . 37
Table 18 – Safety consumer heartbeat entry . 37
Table 19 – Safety consumer heartbeat . 38
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SIST EN 61784-3-18:2011
– 4 – 61784-3-18 IEC:2011
Table 20 – Safety producer heartbeat parameter . 39
Table 21 – Safety bus cycle times . 42
Table 22 – SPDO timeout tolerance . 43
Table 23 – Receive SPDO communication parameter . 43
Table 24 – Transmit SPDO communication parameter . 46
Table 25 – Mapping format . 49
Table 26 – Receive SPDO mapping parameter . 49
Table 27 – Transmit SPDO mapping parameter . 50
Table 28 – Indicator states definiton . 51
Table 29 – STATUS indicator states . 51
Figure 1 – Relationships of IEC 61784-3 with other standards (machinery) . 7
Figure 2 – Relationships of IEC 61784-3 with other standards (process) . 8
Figure 3 – FSCP 18/1 system . 19
Figure 4 – FSCP 18/1 software architecture . 21
Figure 5 – SPDO interaction model . 23
Figure 6 – SHB interaction model . 23
Figure 7 – Safety process data object structure . 24
Figure 8 – Safety heartbeat request structure . 26
Figure 9 – Safety heartbeat response structure . 26
Figure 10 – Safety PDU for FSCP 18/1 embedded in a Type 22 CDC data section . 28
Figure 11 – SALMT state machine . 29
Figure 12 – RxSPDO state machine . 31
Figure 13 – Heartbeat procedure . 32
Figure 14 – Delay measurement principle . 33
Figure 15 – Parameter handling . 34
Figure 16 – Safety response time components . 52
Figure 17 – Considered data fields for message size calculation . 54
Figure 18 – Residual error rate . 55
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SIST EN 61784-3-18:2011
61784-3-18 © IEC:2011 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
PROFILES
Part 3-18: Functional safety fieldbuses –
Additional specifications for CPF 18
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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
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in the subject dealt with may participate in this preparatory work. International, governmental and non-
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with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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.
International Standard IEC 61784-3-18 has been prepared by subcommittee 65C: Industrial
networks, of IEC technical committee 65: Industrial process measurement, control and
automation.
This standard cancels and replaces IEC/PAS 61784-3-18 published in 2009. This first edition
constitutes a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
65C/639/FDIS 65C/649/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 publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
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SIST EN 61784-3-18:2011
– 6 – 61784-3-18 IEC:2011
A list of all parts of the IEC 61784-3 series, published under the general title Industrial
communication networks – Profiles – Functional safety fieldbuses, can be found on the IEC
website.
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 61784-3-18:2011
61784-3-18 IEC:2011 – 7 –
0 Introduction
0.1 General
The IEC 61158 fieldbus standard together with its companion standards IEC 61784-1 and
IEC 61784-2 defines a set of communication protocols that enable distributed control of
automation applications. Fieldbus technology is now considered well accepted and well
proven. Thus many fieldbus enhancements are emerging, addressing not yet standardized
areas such as real time, safety-related and security-related applications.
This standard explains the relevant principles for functional safety communications with
reference to IEC 61508 series and specifies several safety communication layers (profiles and
corresponding protocols) based on the communication profiles and protocol layers of
IEC 61784-1, IEC 61784-2 and the IEC 61158 series. It does not cover electrical safety and
intrinsic safety aspects.
Figure 1 shows the relationships between this standard and relevant safety and fieldbus
standards in a machinery environment.
Product standards
ISO 12100-1 and ISO 14121
ISO 12100-1 and ISO 14121
Safety of machinery – Principles for
IEC 61496 IEC 61131-6 IEC 61800-5-2 ISO 10218-1
IEC 61496 IEC 61800-5-2 ISO 10218-1 Safety of machinery – Principles for
IEC 61131-6
design and risk assessment
Safety f. e.g. Safety functions Safety requirements
Safety f. e.g. Safety for PLC Safety functions Safety requirements design and risk assessment
Safety for PLC
(under consideration)
light curtains for drives for robots
light curtains (under consideration) for drives for robots
Design of safety-related electrical, electronic and program-
IEC 61784-4 IEC 62443
IEC 61784-4 IEC 62443
mable electronic control systems (SRECS) for machinery
Sec
...
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