SIST EN 61784-3-3:2018
(Main)Industrial communication networks - Profiles - Part 3-3: Functional safety fieldbuses - Additional specifications for CPF 3 (IEC 61784-3-3:2016)
Industrial communication networks - Profiles - Part 3-3: Functional safety fieldbuses - Additional specifications for CPF 3 (IEC 61784-3-3:2016)
IEC 61784-3-3:2016 specifies a safety communication layer (services and protocol) based on CPF 3 of IEC 61784-1, IEC 61784-2 (CP 3/1, CP 3/2, CP 3/4, CP 3/5 and CP 3/6) and IEC 61158 Types 3 and 10. It identifies the principles for functional safety communications defined in IEC 61784-3 that are relevant for this safety communication layer. This safety communication layer is intended for implementation in safety devices only. This third edition cancels and replaces the second edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Legacy V1-mode removed from this protocol edition;
- Protocol extensions to protect against possible loopbacks (LP extensions);
- Protocol extensions to keep SIL3 for safety networks with large numbers of participants (XP extensions) and subsequent new F-Parameter "F_CRC_Seed";
- Introduction of random and disjoint Codename based MonitoringNumbers (MNR) besides to the previous Consecutive Numbers;
- Provisions for Channel Granular Passivation and subsequent new F-Parameter "F_Passivation";
- GSD extensions due to new F-Parameters;
- Notations according to the CP3 family in IEC 61158 (e.g. IO Controller);
- Additional diagnosis message types;
- Diverse error corrections and fixes of typos;
- Updated documents in bibliography.
Industrielle Kommunikationsnetze - Profile - Teil 3-3: Funktional sichere Übertragung bei Feldbussen - Zusätzliche Festlegungen für die Kommunikationsprofilfamilie 3 (IEC 61784-3-3:2016)
Réseaux de communication industriels - Profils - Partie 3-3: Bus de terrain de sécurité fonctionnelle - Spécifications supplémentaires pour CPF 3 (IEC 61784-3-3:2016)
L'IEC 61784-3-3:2016 spécifie une couche de communication relative à la sécurité (services et protocole) fondée sur la CPF 3 de l'IEC 61784-1 et les Types 3 et 10 de l'IEC 61784-2 (CP 3/1, CP 3/2, CP 3/4, CP 3/5 et CP 3/6) et de l'IEC 61158. Elle identifie les principes applicables aux communications de sécurité fonctionnelle définies dans l'IEC 61784-3, et appropriés à cette couche de communication de sécurité. Cette couche de communication de sécurité est destinée à être mise en oeuvre uniquement sur les appareils de sécurité. Cette troisième édition annule et remplace la deuxième édition parue en 2010. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- Mode V1 hérité supprimé de la présente édition de protocole;
- Extensions de protocoles afin d'assurer une protection contre les bouclages potentiels (extensions LP);
- Extensions de protocoles afin de conserver SIL3 pour les réseaux de sécurité avec de très nombreux participants (extensions XP) et le nouveau paramètre F "F_CRC_Seed" ultérieur;
- Introduction de MonitoringNumbers (MNR) aléatoires et disjoints basés sur le nom de code (Codename) outre les numéros consécutifs précédents;
- Dispositions concernant la passivation granulaire des canaux (Channel Granular Passivation) et le nouveau Paramètre F "F_Passivation" ultérieur;
- Extensions GSD dues aux nouveaux paramètres F;
- Notations selon la famille CP3 dans l'IEC 61158 (par exemple, contrôleur d'entrée-sortie);
- Types de messages de diagnostic supplémentaires;
- Diverses corrections d'erreurs et corrections de typographies;
- Documents mis à jour dans la bibliographie.
Industrijska komunikacijska omrežja - Profili - 3-3. del: Funkciijska varnost procesnih vodil - Dodatne specifikacije za CPF 3 (IEC 61784-3-3:2016)
Standard IEC 61784-3-3:2016 določa varnostno komunikacijsko plast (storitve in protokoli), ki temelji na CPF 3 standardov IEC 61784-1, IEC 61784-2 (CP 3/1, CP 3/2, CP 3/4, CP 3/5 in CP 3/6) in IEC 61158, tipa 3 in 10. Določa načela za komunikacijsko funkcionalno varnost, opredeljena v IEC 61784-3, ki so pomembna za to varnostno komunikacijsko plast. Ta varnostna komunikacijska plast je predvidena za uporabo v varnostnih napravah. Tretja izdaja razveljavlja in nadomešča drugo izdajo, objavljeno leta 2010. Ta izdaja je tehnično popravljena izdaja. Ta izdaja vključuje naslednje znatne tehnične spremembe glede na prejšnjo izdajo:
– podedovani način V1 je odstranjen iz te izdaje protokola;
– razširitve protokola za zaščito pred morebitnimi povratnimi zankami (razširitve LP);
– razširitve protokola za ohranitev SIL3 (stopnja varnostne celovitosti) za varnostna omrežja z velikim številom udeležencev (razširitve XP) in posledično novi parameter F »F_CRC_Seed«;
– uvedba naključnega in nepovezanega kodnega imena, ki temelji na nadzornih številih (MNR) poleg prejšnjih zaporednih števil;
– določbe za »Channel Granular Passivation« in posledično novi parameter »F_Passivation«;
– razširitev GSD zaradi novih parametrov F;
– oznake v skladu s skupino CP3 v standardu IEC 61158 (npr. krmilnik V/I);
– dodatne vrste diagnostičnih sporočil;
– popravki različni napak in odprava tipkarskih napak;
– posodobljeni dokumenti v bibliografiji.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 61784-3-3:2018
01-februar-2018
1DGRPHãþD
SIST EN 61784-3-3:2010
Industrijska komunikacijska omrežja - Profili - 3-3. del: Funkciijska varnost
procesnih vodil - Dodatne specifikacije za CPF 3 (IEC 61784-3-3:2016)
Industrial communication networks - Profiles - Part 3-3: Functional safety fieldbuses -
Additional specifications for CPF 3 (IEC 61784-3-3:2016)
Industrielle Kommunikationsnetze - Profile - Teil 3-3: Funktional sichere Übertragung bei
Feldbussen - Zusätzliche Festlegungen für die Kommunikationsprofilfamilie 3 (IEC 61784
-3-3:2016)
Réseaux de communication industriels - Profils - Partie 3-3: Bus de terrain de sécurité
fonctionnelle - Spécifications supplémentaires pour CPF 3 (IEC 61784-3-3:2016)
Ta slovenski standard je istoveten z: EN 61784-3-3:2017
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.05 9HþVORMQHXSRUDEQLãNH Multilayer applications
UHãLWYH
SIST EN 61784-3-3:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 61784-3-3:2018
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SIST EN 61784-3-3:2018
EUROPEAN STANDARD EN 61784-3-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2017
ICS 25.040.40; 35.100.05 Supersedes EN 61784-3-3:2010
English Version
Industrial communication networks - Profiles - Part 3-3:
Functional safety fieldbuses - Additional specifications for CPF 3
(IEC 61784-3-3:2016)
Réseaux de communication industriels - Profils - Partie 3-3: Industrielle Kommunikationsnetze - Profile - Teil 3-3:
Bus de terrain de sécurité fonctionnelle - Spécifications Funktional sichere Übertragung bei Feldbussen -
supplémentaires pour CPF 3 Zusätzliche Festlegungen für die
(IEC 61784-3-3:2016) Kommunikationsprofilfamilie 3
(IEC 61784-3-3:2016)
This European Standard was approved by CENELEC on 2016-08-16. 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, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61784-3-3:2017 E
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SIST EN 61784-3-3:2018
EN 61784-3-3:2017
European foreword
The text of document 65C/851/FDIS, future edition 3 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 approved by CENELEC as EN 61784-3-3:2017.
The following dates are fixed:
• latest date by which the document has to be (dop) 2018-05-10
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2020-11-10
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61784-3-3:2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 61784-3-3:2016 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 60870-5-1 NOTE Harmonized as EN 60870-5-1.
IEC 61000-6-7 NOTE Harmonized as EN 61000-6-7.
IEC 61131-6 NOTE Harmonized as EN 61131-6.
IEC 61158 (all parts) NOTE Harmonized as EN 61158 (all parts).
IEC 61496 (all parts) NOTE Harmonized as EN 61496 (all parts).
IEC 61508-1:2010 NOTE Harmonized as EN 61508-1:2010 (not 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 61784-5 (all parts) NOTE Harmonized as EN 61784-5 (all parts).
IEC 61800-5-2 NOTE Harmonized as EN 61800-5-2.
IEC 61804 (all parts) NOTE Harmonized as EN 61804 (all parts)
IEC 62443 (all parts) NOTE Harmonized as prEN 62443 (all parts)
IEC/TR 62685 NOTE Harmonized as CLC/TR 62685.
ISO 10218-1 NOTE Harmonized as EN ISO 10218-1.
ISO 12100 NOTE Harmonized as EN ISO 12100.
ISO 13849 (all parts) NOTE Harmonized as EN ISO 13849 (all parts)
2
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SIST EN 61784-3-3:2018
EN 61784-3-3:2017
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60204-1 (mod) - Safety of machinery - Electrical equipment - -
of machines - Part 1: General requirements
IEC 61000-6-2 - Electromagnetic compatibility (EMC) - Part EN 61000-6-2 -
6-2: Generic standards - Immunity standard
for industrial environments
IEC 61010-1 - Safety requirements for electrical equipment EN 61010-1 -
for measurement, control and laboratory use
- Part 1: General requirements
IEC 61131-2 2007 Programmable controllers - Part 2: EN 61131-2 2007
Equipment requirements and tests
IEC 61131-3 - Programmable controllers - Part 3: EN 61131-3 -
Programming languages
IEC 61158-2 - Industrial communication networks - EN 61158-2 -
Fieldbus specifications - Part 2: Physical
layer specification and service definition
IEC 61158-3-3 - Industrial communication networks - EN 61158-3-3 -
Fieldbus specifications - Part 3-3: Data-link
layer service definition - Type 3 elements
IEC 61158-4-3 - Industrial communication networks - EN 61158-4-3 -
Fieldbus specifications - Part 4-3: Data-link
layer protocol specification - Type 3
elements
IEC 61158-5-3 - Industrial communication networks - EN 61158-5-3 -
Fieldbus specifications - Part 5-3:
Application layer service definition - Type 3
elements
IEC 61158-5-10 - Industrial communication networks - EN 61158-5-10 -
Fieldbus specifications - Part 5-10:
Application layer service definition - Type 10
elements
IEC 61158-6-3 - Industrial communication networks - EN 61158-6-3 -
Fieldbus specifications - Part 6-3:
Application layer protocol specification -
Type 3 elements
IEC 61158-6-10 - Industrial communication networks - EN 61158-6-10 -
Fieldbus specifications - Part 6-10:
Application layer protocol specification -
Type 10 elements
3
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SIST EN 61784-3-3:2018
EN 61784-3-3:2017
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, - -
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 61508-2 - 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 61511 series Functional safety - Safety instrumented EN 61511 series
systems for the process industry sector
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
IEC 61784-3 - Industrial communication networks - Profiles EN 61784-3 -
- Part 3: Functional safety fieldbuses -
General rules and profile definitions
IEC 61784-5-3 - Industrial communication networks - Profiles EN 61784-5-3 -
- Part 5-3: Installation of fieldbuses -
Installation profiles for CPF 3
IEC 61918 (mod) 2013 Industrial communication networks - EN 61918 2013
Installation of communication networks in
industrial premises
IEC 62061 - Safety of machinery - Functional safety of EN 62061 -
safety-related electrical, electronic and
programmable electronic control systems
IEC 62280 2014 Railway applications - Communication, - -
signalling and processing systems - Safety
related communication in transmission
systems
ISO 13849-1 2006 Safety of machinery - Safety-related parts of EN ISO 13849-1 2008
control systems - Part 1: General principles
for design
ISO 13849-2 - Safety of machinery - Safety-related parts of EN ISO 13849-2 -
control systems - Part 2: Validation
IEC/TR 62390 - Common automation device - Profile - -
guideline
4
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SIST EN 61784-3-3:2018
IEC 61784-3-3
®
Edition 3.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Profiles –
Part 3-3: Functional safety fieldbuses – Additional specifications for CPF 3
Réseaux de communication industriels – Profils –
Partie 3-3: Bus de terrain de sécurité fonctionnelle – Spécifications
supplémentaires pour CPF 3
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40, 35.100.05 ISBN 978-2-8322-3481-5
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SIST EN 61784-3-3:2018
– 2 – IEC 61784-3-3:2016 IEC 2016
CONTENTS
FOREWORD . 8
0 Introduction . 10
0.1 General . 10
0.2 Patent declaration . 12
1 Scope . 14
2 Normative references. 14
3 Terms, definitions, symbols, abbreviated terms and conventions. 16
3.1 Terms and definitions . 16
3.1.1 Common terms and definitions . 16
3.1.2 CPF 3: Additional terms and definitions . 22
3.2 Symbols and abbreviated terms . 26
3.2.1 Common symbols and abbreviated terms . 26
3.2.2 CPF 3: Additional symbols and abbreviated terms . 27
3.3 Conventions . 28
4 Overview of FSCP 3/1 (PROFIsafe™) . 28
5 General . 31
5.1 External documents providing specifications for the profile . 31
5.2 Safety functional requirements . 31
5.3 Safety measures . 31
5.4 Safety communication layer structure . 32
5.4.1 Principle of FSCP 3/1 safety communications . 32
5.4.2 CPF 3 communication structures . 33
5.5 Relationships with FAL (and DLL, PhL) . 36
5.5.1 Device model . 36
5.5.2 Application and communication relationships . 37
5.5.3 Data types . 37
6 Safety communication layer services . 38
6.1 F-Host services . 38
6.2 F-Device services. 41
6.3 Diagnosis . 43
6.3.1 Safety alarm generation . 43
6.3.2 F-Device safety layer diagnosis including the iPar-Server . 43
7 Safety communication layer protocol . 44
7.1 Safety PDU format . 44
7.1.1 Safety PDU structure . 44
7.1.2 Safety IO data . 45
7.1.3 Status and Control Byte . 45
7.1.4 (Virtual) MonitoringNumber . 47
7.1.5 (Virtual) MNR mechanism (F_CRC_Seed=0) . 48
7.1.6 (Virtual) MNR mechanism (F_CRC_Seed=1) . 48
7.1.7 CRC2 Signature (F_CRC_Seed=0) . 50
7.1.8 CRC2 Signature (F_CRC_Seed=1) . 51
7.1.9 Non-safety IO data . 52
7.2 FSCP 3/1 behavior . 52
7.2.1 General . 52
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SIST EN 61784-3-3:2018
IEC 61784-3-3:2016 IEC 2016 – 3 –
7.2.2 F-Host state diagram . 53
7.2.3 F-Device state diagram . 56
7.2.4 Sequence diagrams . 60
7.2.5 Timing diagram for a MonitoringNumber reset . 66
7.2.6 Monitoring of safety times . 66
7.3 Reaction in the event of a malfunction . 69
7.3.1 Unintended repetition . 69
7.3.2 Loss . 70
7.3.3 Insertion . 70
7.3.4 Incorrect sequence . 70
7.3.5 Corruption of safety data . 70
7.3.6 Unacceptable delay . 70
7.3.7 Masquerade . 70
7.3.8 Addressing. 71
7.3.9 Memory failures within switches . 71
7.3.10 Loop-back . 72
7.3.11 Network boundaries and router . 72
7.4 F-Startup and parameter change at runtime . 73
7.4.1 Standard startup procedure . 73
7.4.2 iParameter assignment deblocking . 73
8 Safety communication layer management . 73
8.1 F-Parameter . 73
8.1.1 Summary . 73
8.1.2 F_Source/Destination_Address (Codename) . 74
8.1.3 F_WD_Time (F-Watchdog time) . 74
8.1.4 F_WD_Time_2 (secondary F-Watchdog time) . 75
8.1.5 F_Prm_Flag1 (Parameters for the safety layer management) . 75
8.1.6 F_Prm_Flag2 (Parameters for the safety layer management) . 77
8.1.7 F_iPar_CRC (value of iPar_CRC across iParameters) . 78
8.1.8 F_Par_CRC calculation (across F-Parameters) . 79
8.1.9 Structure of the F-Parameter record data object . 79
8.2 iParameter and iPar_CRC . 79
8.3 Safety parameterization. 80
8.3.1 Objectives . 80
8.3.2 GSDL and GSDML safety extensions . 81
8.3.3 Securing safety parameters and GSD data . 83
8.4 Safety configuration . 87
8.4.1 Securing the safety IO data description (CRC7) . 87
8.4.2 DataItem data type section examples . 88
8.5 Data type information usage . 92
8.5.1 F-Channel driver . 92
8.5.2 Rules for standard F-Channel drivers . 93
8.5.3 Recommendations for F-Channel drivers . 94
8.6 Safety parameter assignment mechanisms . 95
8.6.1 F-Parameter assignment . 95
8.6.2 General iParameter assignment . 95
8.6.3 System integration requirements for iParameterization tools . 96
8.6.4 iPar-Server . 98
9 System requirements . 107
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SIST EN 61784-3-3:2018
– 4 – IEC 61784-3-3:2016 IEC 2016
9.1 Indicators and switches . 107
9.2 Installation guidelines . 107
9.3 Safety function response time . 107
9.3.1 Model . 107
9.3.2 Calculation and optimization . 109
9.3.3 Adjustment of watchdog times for FSCP 3/1 . 111
9.3.4 Engineering tool support . 112
9.3.5 Retries (repetition of messages) . 112
9.4 Duration of demands . 113
9.5 Constraints for the calculation of system characteristics . 114
9.5.1 Probabilistic considerations . 114
9.5.2 Safety related assumptions . 116
9.5.3 Non safety related constraints (availability) . 117
9.6 Maintenance . 117
9.6.1 F-Module commissioning / replacement . 117
9.6.2 Identification and maintenance functions . 117
9.7 Safety manual . 117
9.8 Wireless transmission channels . 119
9.8.1 Black channel approach . 119
9.8.2 Availability . 119
9.8.3 Security measures . 119
9.8.4 Stationary and mobile applications . 122
9.9 Conformance classes . 122
10 Assessment . 124
10.1 Safety policy . 124
10.2 Obligations. 124
Annex A (informative) Additional information for functional safety communication
profiles of CPF 3 . 126
A.1 Hash function calculation . 126
A.2 Example values for MonitoringNumbers (MNR) . 129
A.3 Response time measurements . 130
Annex B (informative) Information for assessment of the functional safety
communication profiles of CPF 3 . 133
Bibliography . 134
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 . 29
Figure 4 – Structure of an FSCP 3/1 safety PDU. 29
Figure 5 – Safety communication on CPF 3 . 30
Figure 6 – Standard CPF 3 transmission system . 32
Figure 7 – Safety layer architecture . 33
Figure 8 – Basic communication layers . 34
Figure 9 – Multiport switch bus structure . 34
Figure 10 – Linear bus structure . 35
Figure 11 – Crossing network borders with routers . 35
Figure 12 – Complete safety transmission paths . 36
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SIST EN 61784-3-3:2018
IEC 61784-3-3:2016 IEC 2016 – 5 –
Figure 13 – IO Device model . 37
Figure 14 – FSCP 3/1 communication structure . 38
Figure 15 – F user interface of F-Host driver instances . 39
Figure 16 – Motivation for "Channel-related Passivation" . 40
Figure 17 – F-Device driver interfaces . 42
Figure 18 – Safety PDU for CPF 3 . 45
Figure 19 – Status Byte . 45
Figure 20 – Control Byte . 46
Figure 21 – The Toggle Bit function . 47
Figure 22 – F-Device MonitoringNumber . 48
Figure 23 – F-Host CRC2 signature generation (F_CRC_Seed=0) . 50
Figure 24 – Details of the CRC2 signature calculation (F_CRC_Seed=0) . 51
Figure 25 – CRC2 signature calculation (F_CRC_Seed=1) .
...
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