EN 61784-3-3:2008

SLOVENSKI STANDARD
01-september-2008
Industrijska komunikacijska omrežja - Profili - 3-3. del: Funkcijska varnost
procesnih vodil - Dodatne specifikacije za CPF 3 (IEC 61784-3-3:2007)
Industrial communication networks - Profiles - Part 3-3: Functional safety fieldbuses -
Additional specifications for CPF 3
Industrielle Kommunikationsnetze - Profile - Teil 3-3: Funktional sichere Übertragung bei
Feldbussen - Zusätzliche Festlegungen für die Kommunikationsprofilfamilie 3
Réseaux de communication industriels - Profils - Partie 3-3: Bus de terrain de sécurité
fonctionnelle - Spécification supplémentaire pour CPF 3
Ta slovenski standard je istoveten z: EN 61784-3-3:2008
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.05 9HþVORMQHXSRUDEQLãNH Multilayer applications
UHãLWYH
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61784-3-3
NORME EUROPÉENNE
June 2008
EUROPÄISCHE NORM
ICS 35.100.20; 25.040.40
English version
Industrial communication networks -
Profiles -
Part 3-3: Functional safety fieldbuses -
Additional specifications for CPF 3
(IEC 61784-3-3:2007)
Réseaux de communication industriels -  Industrielle Kommunikationsnetze -
Profils - Profile -
Partie 3-3: Bus de terrain Teil 3-3: Funktional sichere Übertragung
de sécurité fonctionnelle - bei Feldbussen -
Spécification supplémentaire pour CPF 3 Zusätzliche Festlegungen
(CEI 61784-3-3:2007) für die Kommunikationsprofilfamilie 3
(IEC 61784-3-3:2007)
This European Standard was approved by CENELEC on 2008-05-01. 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, 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

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61784-3-3:2008 E
Foreword
The text of document 65C/470/FDIS, future edition 1 of IEC 61784-3-3, 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 61784-3-3 on 2008-05-01.
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) 2009-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-05-01
The International Electrotechnical Commission (IEC) and CENELEC draw attention to the fact that it is
claimed that compliance with this document may involve the use of patents concerning the functional
safety communication profiles for family 3 as follows, where the [xx] notation indicates the holder of the
patent right:
EP1267270-A2 [SI] Verfahren zur Datenübertragung in einem Rechnersystem
WO00/045562-A1 [SI] Method and device for determining the reliability of data carriers
WO99/049373-A1 [SI] Shortened data message of an automation system
The IEC and CENELEC take no position concerning the evidence, validity and scope of these patent
rights.
The holders of these patents rights have assured the IEC that they are willing to negotiate licences under
reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this
respect, the statements of the holders of these patent rights are registered with IEC.
Information may be obtained from:
[SI] Siemens AG
A&D AS FA TC
Karlsruhe
Germany
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights other than those identified above. IEC and CENELEC shall not be held responsible for
identifying any or all such patent rights.
Annex ZA has been added by CENELEC.
__________
- 3 - EN 61784-3-3:2008
Endorsement notice
The text of the International Standard IEC 61784-3-3:2007 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 60204-1:2006 (not modified).
IEC 60870-5-1 NOTE  Harmonized as EN 60870-5-1:1993 (not modified).
IEC 61496 NOTE  Harmonized as EN 61496-1:2004 (modified)
and as CLC/TS 61496-2:2006 (not modified)
and CLC/TC 61496-3:2008 (not modified)
IEC 61508-4 NOTE  Harmonized as EN 61508-4:2001 (not modified).
IEC 61508-6 NOTE  Harmonized as EN 61508-6:2001 (not modified).
IEC 61784-5 NOTE  Harmonized in EN 61784-5 series (not modified).
IEC 61800-5-2 NOTE  Harmonized as EN 61800-5-2:2007 (not modified).
IEC 62061 NOTE  Harmonized as EN 62061:2005 (not modified).
ISO 10218-1 NOTE  Harmonized as EN ISO 10218-1:2006 (not modified).
ISO 12100-1 NOTE  Harmonized as EN ISO 12100-1:2003 (not modified).
ISO 13849-2 NOTE  Harmonized as EN ISO 13849-2:2003 (not modified).
__________
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

1) 2)
IEC 61010-1 - Safety requirements for electrical equipment EN 61010-1 2001
for measurement, control, + corr. June 2002
and laboratory use -
Part 1: General requirements
1) 2)
IEC 61131-2 - Programmable controllers - EN 61131-2 2007
Part 2: Equipment requirements and tests

1) 2)
IEC 61131-3 - Programmable controllers - EN 61131-3 2003
Part 3: Programming languages
IEC 61158 Series Industrial communication networks - EN 61158 Series
Fieldbus specifications
1) 2)
IEC 61158-2 - Industrial communication networks - EN 61158-2 2008
Fieldbus specifications -
Part 2: Physical layer specification and service
definition
1) 2)
IEC 61158-3-3 - Industrial communication networks - EN 61158-3-3 2008
Fieldbus specifications -
Part 3-3: Data-link layer service definition -
Type 3 elements
1) 2)
IEC 61158-4-3 - Industrial communication networks - EN 61158-4-3 2008
Fieldbus specifications -
Part 4-3: Data-link layer protocol
specification - Type 3 elements

1) 2)
IEC 61158-5-3 - Industrial communication networks - EN 61158-5-3 2008
Fieldbus specifications -
Part 5-3: Application layer service definition -
Type 3 elements
1) 2)
IEC 61158-5-10 - Industrial communication networks - EN 61158-5-10 2008
Fieldbus specifications -
Part 5-10: Application layer service definition -
Type 10 elements
1) 2)
IEC 61158-6-3 - Industrial communication networks - EN 61158-6-3 2008
Fieldbus specifications -
Part 6-3: Application layer protocol
specification - Type 3 elements

1) 2)
IEC 61158-6-10 - Industrial communication networks - EN 61158-6-10 2008
Fieldbus specifications -
Part 6-10: Application layer protocol
specification - Type 10 elements

1)
Undated reference.
2)
Valid edition at date of issue.

- 5 - EN 61784-3-3:2008
Publication Year Title EN/HD Year

1) 2)
IEC 61326-3-1 - Electrical equipment for measurement, EN 61326-3-1 2008
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

1) 2)
IEC 61326-3-2 - Electrical equipment for measurement, EN 61326-3-2 2008
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 61511 Series Functional safety - Safety instrumented EN 61511 Series
systems for the process industry sector

1) 2)
IEC 61784-1 - Industrial communication networks - Profiles - EN 61784-1 2008
Part 1: Fieldbus profiles
1) 2)
IEC 61784-2 - Industrial communication networks - Profiles - EN 61784-2 2008
Part 2: Additional fieldbus profiles for real-time
networks based on ISO/IEC 8802-3

1) 2)
IEC 61784-3 - Industrial communication networks - Profiles - EN 61784-3 2008
Part 3: Functional safety fieldbuses - General
rules and profile definitions
1) 2)
IEC 61784-5-3 - Industrial communication networks - Profiles - EN 61784-5-3 2008
Part 5-3: Installation of fieldbuses - Installation
profiles for CPF 3
1) 2)
IEC 61918 (mod) - Industrial communication networks - EN 61918 2008
Installation of communication networks in
industrial premises
1) 2)
IEC 62061 - Safety of machinery - Functional safety of EN 62061 2005
safety-related electrical, electronic and
programmable electronic control systems

IEC 62280-1 2002 Railway applications - Communication, - -
signalling and processing systems -
Part 1: Safety-related communication in
closed transmission systems
1)
IEC 62280-2 - Railway applications - Communication, - -
signalling and processing systems -
Part 2: Safety-related communication in open
transmission systems
1)
IEC/TR 62390 - Common automation device - - -
Profile guideline
1) 2)
ISO 13849-1 - Safety of machinery - Safety-related parts of EN ISO 13849-1 2006
control systems -
Part 1: General principles for design

Publication Year Title EN/HD Year

1)
ISO 15745-3 - Industrial automation systems - -
and integration - Open systems application
integration framework -
Part 3: Reference description for IEC 61158
based control systems
1)
ISO 15745-4 - Industrial automation systems - -
and integration - Open systems application
integration framework -
Part 4: Reference description for Ethernet-
based control systems
IEC 61784-3-3
Edition 1.0 2007-12
INTERNATIONAL
STANDARD
Industrial communication networks – Profiles –
Part 3-3: Functional safety fieldbuses – Additional specifications for CPF 3

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XE
ICS 35.100.20 25.040.40 ISBN 2-8318-9400-X

– 2 – 61784-3-3 © IEC:2007(E)
CONTENTS
FOREWORD.8
INTRODUCTION.10
1 Scope.13
2 Normative references .13
3 Terms, definitions, symbols, abbreviated terms and conventions .15
3.1 Terms and definitions .15
3.1.1 Common terms and definitions .15
3.1.2 CPF 3: Additional terms and definitions .19
3.2 Symbols and abbreviated terms.23
3.2.1 Common symbols and abbreviated terms .23
3.2.2 CPF 3: Additional symbols and abbreviated terms .23
3.3 Conventions .24
4 Overview of FSCP 3/1 (PROFIsafe™) .25
5 General .27
5.1 External documents providing specifications for the profile.27
5.2 Safety functional requirements .27
5.3 Safety measures .28
5.4 Safety communication layer structure .29
5.4.1 Principle of FSCP 3/1 safety communications .29
5.4.2 CPF 3 communication structures .30
5.5 Relationships with FAL (and DLL, PhL) .33
5.5.1 Device model.33
5.5.2 Application and communication relationships.33
5.5.3 Message format.35
5.5.4 Data types .35
6 Safety communication layer services .36
6.1 F-Host services .36
6.2 F-Device services.39
6.3 Diagnosis .40
6.3.1 Safety alarm generation.40
6.3.2 F-Device safety layer diagnosis including the iPar-Server.40
7 Safety communication layer protocol .41
7.1 Safety PDU format .41
7.1.1 Safety PDU structure.41
7.1.2 Safety I/O data .42
7.1.3 Status and Control Byte.42
7.1.4 (Virtual) Consecutive Number.44
7.1.5 CRC2 Signature .45
7.1.6 Appended standard I/O data .46
7.2 FSCP 3/1 behavior .46
7.2.1 General .46
7.2.2 F-Host state diagram .47
7.2.3 F-Device state diagram.50
7.2.4 Sequence diagrams.54
7.2.5 Timing diagram for a counter reset .60
7.2.6 Monitoring of safety times.60

61784-3-3 © IEC:2007(E) – 3 –
7.3 Reaction in the event of a malfunction.63
7.3.1 Repetition.63
7.3.2 Loss .63
7.3.3 Insertion .63
7.3.4 Incorrect sequence .63
7.3.5 Corruption of safety data .63
7.3.6 Delay.64
7.3.7 Masquerade .64
7.3.8 Memory failures within switches .65
7.3.9 Network boundaries and router.66
7.4 F-Startup and change coordination.66
7.4.1 Standard startup procedure .66
7.4.2 iParameter assignment deblocking .66
8 Safety communication layer management.67
8.1 F-Parameter .67
8.1.1 Summary.67
8.1.2 F_Source/Destination_Address (codename) .67
8.1.3 F_WD_Time (F-Watchdog time).68
8.1.4 F_Prm_Flag1 (Parameters for the safety layer management) .68
8.1.5 F_Prm_Flag2 (Parameters for the safety layer management) .69
8.1.6 F_iPar_CRC (value of iPar_CRC across iParameters) .70
8.1.7 F_Par_CRC (CRC1 across F-Parameters) .71
8.1.8 Structure of the F-Parameter record data object .71
8.1.9 F-Data fraction .71
8.2 iParameter and iPar_CRC .72
8.3 Safety parameterization.73
8.3.1 Objectives .73
8.3.2 GSD and GSDML safety extensions .73
8.3.3 Securing safety parameters and GSD data .74
8.4 Safety configuration .76
8.4.1 Securing the safety I/O data description (CRC7).76
8.4.2 DataItem data type section examples .77
8.5 Data type information usage.79
8.5.1 F-Channel driver.79
8.5.2 Rules for standard F-Channel drivers .80
8.5.3 Recommendations for F-Channel drivers .80
8.6 Safety parameter assignment mechanisms.81
8.6.1 F-Parameter assignment .81
8.6.2 General iParameter assignment.82
8.6.3 System integration requirements for iParameterization tools.83
8.6.4 iPar-Server .84
9 System requirements.92
9.1 Indicators and switches .92
9.2 Installation guidelines.93
9.3 Safety function response time .93
9.3.1 Model .93
9.3.2 Calculation and optimization.95
9.3.3 Adjustment of watchdog times for FSCP 3/1 .96
9.3.4 Engineering tool support.97

– 4 – 61784-3-3 © IEC:2007(E)
9.3.5 Retries (repetition of messages) .97
9.4 Duration of demands .98
9.5 Constraints for the calculation of system characteristics.99
9.5.1 Probabilistic considerations .99
9.5.2 Safety related constraints .101
9.5.3 Non safety related constraints (availability).102
9.6 Maintenance.102
9.6.1 F-Module commissioning / replacement .102
9.6.2 Identification and maintenance functions . 102
9.7 Safety manual .103
9.8 Wireless transmission channels.103
9.8.1 Black Channel approach.103
9.8.2 Availability.104
9.8.3 Security measures.104
9.8.4 Stationary and mobile applications . 106
9.9 Conformance classes .106
10 Certification.107
10.1 Safety policy .107
10.2 Obligations .108
Annex A (informative) Additional information for functional safety communication
profiles of CPF 3 .109
A.1 Hash function calculation.109
A.2 Response time measurements.111
Bibliography.115

Table 1 – Deployed measures to master errors .28
Table 2 – Data types used for FSCP 3/1 .35
Table 3 – Safety layer diagnosis messages .40
Table 4 – F-Host states and transitions.48
Table 5 – F-Device states and transitions .52
Table 6 – SIL monitor times .63
Table 7 – Remedies for switch failures.65
Table 8 – Safety network boundaries .66
Table 9 – I/O data structure items (Version 2).76
Table 10 – Sample F-Channel drivers .80
Table 11 – Requirements for iParameterization.83
Table 12 – Specifier for the iPar-Server Request .87
Table 13 – Structure of the Read_RES_PDU ("read record").88
Table 14 – Structure of the Write_REQ_PDU ("write record").89
Table 15 – Structure of the Pull_RES_PDU ("Pull").89
Table 16 – Structure of the Push_REQ_PDU ("Push") .89
Table 17 – iPar-Server states and transitions.91
Table 18 – iPar-Server management measures.92
Table 19 – Information to be included in the safety manual. 103
Table 20 – Security measures for WLAN (IEEE 802.11i) . 105

61784-3-3 © IEC:2007(E) – 5 –
Table 21 – Security measures for Bluetooth (IEEE 802.15.1) . 106
Table 22 – F-Host conformance class requirements. 107
Table A.1 – The table "Crctab24" for 24 bit CRC signature calculations . 110
Table A.2 – The table "Crctab32" for 32 bit CRC signature calculations . 111

Figure 1 – Relationships of IEC 61784-3 with other standards (machinery) .10
Figure 2 – Relationships of IEC 61784-3 with other standards (process).11
Figure 3 – Basic communication preconditions for FSCP 3/1 .25
Figure 4 – Structure of an FSCP 3/1 safety PDU.26
Figure 5 – Safe communication modes .27
Figure 6 – Standard CPF 3 transmission system.29
Figure 7 – Safety layer architecture .30
Figure 8 – Basic communication layers .30
Figure 9 – Multiport switch bus structure.31
Figure 10 – Linear bus structure .31
Figure 11 – Crossing network borders with routers .32
Figure 12 – Complete safety transmission paths .32
Figure 13 – Device model .33
Figure 14 – Application relationships of a modular device .34
Figure 15 – Application and communication relationships (AR/CR) .34
Figure 16 – Message format .35
Figure 17 – FSCP 3/1 communication structure .37
Figure 18 – F user interface of F-Host driver instances .37
Figure 19 – F-Device driver interfaces .39
Figure 20 – Safety PDU for CPF 3 .42
Figure 21 – Status Byte .42
Figure 22 – Control Byte .43
Figure 23 – The Toggle Bit function .44
Figure 24 – F-Device Consecutive Number .44
Figure 25 – CRC2 generation (F-Host output) .45
Figure 26 – Details of the CRC2 calculation (reverse order).46
Figure 27 – Safety layer communication relationship.46
Figure 28 – F-Host state diagram.47
Figure 29 – F-Device state diagram .51
Figure 30 – Interaction F-Host / F-Device during start-up.54
Figure 31 – Interaction F-Host / F-Device during F-Host power off → on.55
Figure 32 – Interaction F-Host / F-Device with delayed power on.56
Figure 33 – Interaction F-Host / F-Device during power off → on .57
Figure 34 – Interaction F-Host / F-Device while host recognizes CRC error .58
Figure 35 – Interaction F-Host / F-Device while device recognizes CRC error .59
Figure 36 – Impact of the counter reset signal .60
Figure 37 – Monitoring the message transit time F-Host ↔ F-Output .61

– 6 – 61784-3-3 © IEC:2007(E)
Figure 38 – Monitoring the message transit time F-Input ↔ F-Host .61
Figure 39 – F-Parameter data and CRC .64
Figure 40 – iParameter assignment deblocking by the F-Host .67
Figure 41 – F_Prm_Flag1 .68
Figure 42 – F_Check_SeqNr.68
Figure 43 – F_Check_iPar .69
Figure 44 – F_SIL .69
Figure 45 – F_CRC_Length .69
Figure 46 – F_Prm_Flag2 .70
Figure 47 – F_Block_ID .70
Figure 48 – F_Par_Version .70
Figure 49 – F-Parameter.71
Figure 50 – iParameter block .72
Figure 51 – F-Parameter extension within the GSDML specification.74
Figure 52 – CRC1 including iPar_CRC.75
Figure 53 – Algorithm to build CRC0.75
Figure 54 – DataItem section for F_IN_OUT_1.77
Figure 55 – DataItem section for F_IN_OUT_2.78
Figure 56 – DataItem section for F_IN_OUT_5.78
Figure 57 – DataItem section for F_IN_OUT_6.79
Figure 58 – F-Channel driver as "glue" between F-Device and user program .79
Figure 59 – Layout example of an F-Channel driver .80
Figure 60 – F-Parameter assignment for simple F-Devices and F-Slaves.81
Figure 61 – F and iParameter assignment for complex F-Devices .82
Figure 62 – System integration of CPD-Tools.84
Figure 63 – iPar-Server mechanism (commissioning).84
Figure 64 – iPar-Server mechanism (for example F-Device replacement) .85
Figure 65 – iPar-Server request coding ("status model") .86
Figure 66 – Coding of SR_Type .87
Figure 67 – iPar-Server request coding ("alarm model").88
Figure 68 – iPar-Server state diagram .90
Figure 69 – Example safety function with a critical response time path .93
Figure 70 – Simplified typical response time model.94
Figure 71 – Frequency distributions of typical response times of the model .94
Figure 72 – Context of delay times and watchdog times.95
Figure 73 – Timing sections forming the FSCP 3/1 F_WD_Time .96
Figure 74 – Frequency distribution of response times with message retries .97
Figure 75 – Retries with CP 3/1 .98
Figure 76 – Retries with CP 3/RTE .98
Figure 77 – Residual error probabilities for the 24-bit polynomial .99
Figure 78 – Properness of the 32-bit polynomial for 52 octets .100
Figure 79 – Properness of the 32-bit polynomial for 132 octets .100
Figure 80 – Monitoring of corrupted messages.101

61784-3-3 © IEC:2007(E) – 7 –
Figure 81 – Security for WLAN networks.104
Figure 82 – Security for Bluetooth networks.105
Figure A.83 – Typical "C" procedure of a cyclic redundancy check. 109
Figure A.84 – Comparison of the response time model and a real application . 112
Figure A.85 – Frequency distribution of measured response times. 113
Figure A.86 – F-Host with standard and safety-related application programs . 114

– 8 – 61784-3-3 © IEC:2007(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS – PROFILES

Part 3-3: Functional safety fieldbuses – Additional specifications
for CPF 3
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,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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
members of its technical committees and IEC National Committees for any personal injury, property damage or
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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.
The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed that compliance
with this document may involve the use of patents concerning the functional safety communication profiles for
family 3 as follows, where the [xx] notation indicates the holder of the patent right:
EP1267270-A2 [SI] Verfahren zur Datenübertragung in einem
Rechnersystem
WO00/045562-A1 [SI] Method and device for determining the reliability of data
carriers
WO99/049373-A1 [SI] Shortened data message of an automation system
IEC takes no position concerning the evidence, validity and scope of these patent rights.
The holders of these patents rights have assured the IEC that they are willing to negotiate licences under
reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the
statement of the holders of these patent rights are registered with IEC.
Information may be obtained from:
[SI] Siemens AG
A&D AS FA TC
Karlsruhe
Germany
61784-3-3 © IEC:2007(E) – 9 –
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights
other than those identified above. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61784-3-3 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/470/FDIS 65C/481/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
...