SIST EN IEC 61139-2:2022
(Main)Industrial networks - Single-drop digital communication interface - Part 2: Functional safety extensions (IEC 61139-2:2022)
Industrial networks - Single-drop digital communication interface - Part 2: Functional safety extensions (IEC 61139-2:2022)
This part of IEC 61139 specifies the extensions to SDCI in IEC 61131-9 for functional safety.
This comprises:
• a standardized OSSDe interface for redundant switching signals based on IEC 61131-2,
• minor modifications/extensions to state machines of SDCI to support the safety operations,
• a lean functional safety communication protocol on top of the standard SDCI communication
which is a black channel according to IEC 61784-3:2021,
• protocol management functions for configuration, parameterization, and commissioning,
• IODD extensions for functional safety,
• a Device tool interface to support Dedicated Tools according to functional safety standards.
This document does not cover:
• communication interfaces or systems including multi-point or multi-drop linkages,
• communication interfaces or systems including multi-channel or encrypted linkages,
• wireless communication interfaces or systems,
• integration of SDCI-FS into upper-level systems such as fieldbuses/FSCPs.
Industrielle Netzwerke - Digitale Single-Drop-Kommunikationsschnittstelle - Teil 2: Erweiterungen für die funktionale Sicherheit (IEC 61139-2:2022)
Réseaux industriels - Interface de communication numérique point à point - Partie 2: Extensions de sécurité fonctionnelle (IEC 61139-2:2022)
L'IEC 61139-2:2022 spécifie les extensions de la SDCI de l'IEC 61131-9 pour la sécurité fonctionnelle. Elle comprend:
• une interface OSSDe normalisée pour les signaux de commutation redondants, fondée sur l'IEC 61131-2;
• des modifications/extensions mineures des diagrammes d'états de la SDCI afin de prendre en charge les opérations de sécurité;
• un protocole de communication de sécurité fonctionnelle affiné en plus de la communication SDCI normalisée, qui constitue un canal noir selon l'IEC 61784-3:2021;
• des fonctions de gestion de protocole pour la configuration, le paramétrage et la mise en service;
• des extensions de l'IODD pour la sécurité fonctionnelle;
• une interface d'outil d'Appareil pour prendre en charge les outils dédiés, conformément aux normes de sécurité fonctionnelle.
Le présent document ne couvre pas:
• les interfaces ou systèmes de communication qui incluent des liaisons multipoints;
• les interfaces ou systèmes de communication qui incluent des liaisons chiffrées ou multicanaux;
• les interfaces ou systèmes de communication sans fil;
• l'intégration de la SDCI-FS aux systèmes de niveau supérieur, tels que les bus de terrain/FSCP.
Industrijska omrežja - Enožični digitalni komunikacijski vmesnik - 2. del: Funkcijsko varni podaljški (IEC 61139-2:2022)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 61139-2:2022
01-december-2022
Industrijska omrežja - Enožični digitalni komunikacijski vmesnik - 2. del:
Funkcijsko varni podaljški (IEC 61139-2:2022)
Industrial networks - Single-drop digital communication interface - Part 2: Functional
safety extensions (IEC 61139-2:2022)
Industrielle Netzwerke - Digitale Single-Drop-Kommunikationsschnittstelle - Teil 2:
Erweiterungen für die funktionale Sicherheit (IEC 61139-2:2022)
Réseaux industriels - Interface de communication numérique point à point - Partie 2:
Extensions de sécurité fonctionnelle (IEC 61139-2:2022)
Ta slovenski standard je istoveten z: EN IEC 61139-2:2022
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.110 Omreževanje Networking
SIST EN IEC 61139-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 61139-2:2022
---------------------- Page: 2 ----------------------
SIST EN IEC 61139-2:2022
EUROPEAN STANDARD EN IEC 61139-2
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2022
ICS 25.040
English Version
Industrial networks - Single-drop digital communication interface
- Part 2: Functional safety extensions
(IEC 61139-2:2022)
Réseaux industriels - Interface de communication Industrielle Netzwerke - Digitale Single-Drop-
numérique point à point - Partie 2: Extensions de sécurité Kommunikationsschnittstelle - Teil 2: Erweiterungen für die
fonctionnelle funktionale Sicherheit
(IEC 61139-2:2022) (IEC 61139-2:2022)
This European Standard was approved by CENELEC on 2022-09-23. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61139-2:2022 E
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SIST EN IEC 61139-2:2022
EN IEC 61139-2:2022 (E)
European foreword
The text of document 65C/1168/FDIS, future edition 1 of IEC 61139-2, 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 IEC 61139-2:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-06-23
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-09-23
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61139-2:2022 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 61784-3 (series) NOTE Harmonized as EN IEC 61784-3 (series)
IEC 60947-5-2 NOTE Harmonized as EN IEC 60947-5-2
IEC 62769 (series) NOTE Harmonized as EN IEC 62769 (series)
IEC 60947-5-6 NOTE Harmonized as EN 60947-5-6
IEC 62453 (series) NOTE Harmonized as EN 62453 (series)
IEC 60947-5-3 NOTE Harmonized as EN 60947-5-3
IEC 61076-2-113 NOTE Harmonized as EN 61076-2-113
IEC 61508-4:2010 NOTE Harmonized as EN 61508-4:2010 (not modified)
2
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SIST EN IEC 61139-2:2022
EN IEC 61139-2:2022 (E)
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 - Safety of machinery - Electrical equipment EN 60204-1 -
of machines - Part 1: General requirements
IEC 61010-2-201 - Safety requirements for electrical EN IEC 61010-2-201 -
equipment for measurement, control, and
laboratory use - Part 2-201: Particular
requirements for control equipment
IEC 61131-2 - Industrial-process measurement and - -
control - Programmable controllers - Part 2:
Equipment requirements and tests
IEC 61131-9 2022 Programmable controllers - Part 9: Single- EN IEC 61131-9 2022
drop digital communication interface for
small sensors and actuators (SDCI)
IEC 61496-1 - Safety of machinery - Electro-sensitive EN IEC 61496-1 -
protective equipment - Part 1: General
requirements and tests
IEC 61508-3 - Functional safety of EN 61508-3 -
electrical/electronic/programmable
electronic safety-related systems - Part 3:
Software requirements
IEC 61784-3 2021 Industrial communication networks - EN IEC 61784-3 2021
Profiles - Part 3: Functional safety
fieldbuses - General rules and profile
definitions
IEC 62061 - Safety of machinery - Functional safety of EN IEC 62061 -
safety-related control systems
IEC 62443 series Security for industrial automation and EN IEC 62443 series
control systems
ISO 639-2 - Codes for the representation of names of - -
languages - Part-2: Alpha-3 code
ISO 639-3 - Codes for the representation of names of - -
languages - Part 3: Alpha-3 code for
comprehensive coverage of languages
3
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SIST EN IEC 61139-2:2022
EN IEC 61139-2:2022 (E)
ISO 13849-1 - Safety of machinery - Safety-related parts EN ISO 13849-1 -
of control systems - Part 1: General
principles for design
4
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SIST EN IEC 61139-2:2022
IEC 61139-2
®
Edition 1.0 2022-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial networks – Single-drop digital communication interface –
Part 2: Functional safety extensions
Réseaux industriels – Interface de communication numérique point à point –
Partie 2: Extensions de sécurité fonctionnelle
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040 ISBN 978-2-8322-3946-9
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 61139-2:2022
– 2 – IEC 61139-2:2022 © IEC 2022
CONTENTS
FOREWORD . 12
INTRODUCTION . 14
1 Scope . 17
2 Normative references . 17
3 Terms, definitions, symbols, abbreviated terms, and conventions . 18
3.1 Terms and definitions . 18
3.2 Common terms and definitions . 18
3.3 Terms and definitions related to SDCI-FS . 21
3.4 Symbols and abbreviated terms . 23
3.5 Conventions . 24
3.5.1 Behavioral descriptions . 24
3.5.2 Memory and transmission octet order . 25
4 Overview of SDCI-FS . 25
4.1 Purpose of the technology and feature levels . 25
4.1.1 Base SDCI-FS technology . 25
4.1.2 From "analog" and "switching" to communication . 26
4.1.3 Minimized paradigm shift from FS-DI to FS-Master . 27
4.1.4 Following the SDCI paradigm (SIO vs. OSSDe) . 28
4.1.5 Port class B . 30
4.1.6 "USB-Master" with safety parameterization . 31
4.1.7 Interoperability matrix of safety devices . 31
4.2 Positioning within the automation hierarchy . 32
4.3 Wiring, connectors, and power supply . 33
4.4 Relationship to SDCI . 33
4.5 Communication features and interfaces . 34
4.6 Parameterization . 34
4.7 Role of FS-Master and FS-Gateway . 35
4.8 Mapping to upper-level systems . 35
4.9 Structure of the document . 35
5 Extensions to the Physical Layer (PL) . 35
5.1 Overview. 35
5.2 Extensions to PL services . 36
5.2.1 PL_SetMode . 36
5.2.2 PL_Ready . 36
5.3 Transmitter/receiver . 37
5.3.1 Assumptions for the expansion to OSSDe . 37
5.3.2 OSSDe specifics . 37
5.3.3 Start-up of an FS-Device (Ready pulse) . 40
5.3.4 Electric characteristics of a receiver in FS-Device and FS-Master . 41
5.4 Electric and dynamic characteristics of an FS-Device . 41
5.5 Electric and dynamic characteristics of an FS-Master port (OSSDe) . 44
5.6 FS-Master port FS-DI interface . 45
5.7 Wake-up coordination . 45
5.8 Fast start-up . 46
5.9 Power supply . 46
5.10 Medium . 47
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SIST EN IEC 61139-2:2022
IEC 61139-2:2022 © IEC 2022 – 3 –
5.10.1 Constraints . 47
5.10.2 Connectors . 47
5.10.3 Cable characteristics . 47
6 Extensions to SIO . 47
7 Extensions to the data link layer (DL) . 47
7.1 Overview. 47
7.2 State machine of the FS-Master DL-mode handler . 47
7.3 State machine of the FS-Device DL-mode handler . 49
8 Extensions to the Master Configuration Manager (CM) . 51
9 Extensions of the FS-Device . 52
9.1 Principle architecture and models . 52
9.1.1 FS-Device architecture . 52
9.1.2 FS-Device model . 53
9.2 Parameter Manager (PM) . 54
9.3 Process Data Exchange (PDE) . 54
9.4 Data Storage (DS) . 54
9.4.1 General considerations and extensions including safety . 54
9.4.2 Backup levels . 55
10 Extensions of the FS-Master . 55
10.1 Principle architecture . 55
10.2 SMI service extensions . 56
10.2.1 Overview . 56
10.2.2 SMI_FSMasterAccess . 58
10.2.3 SMI_SPDUIn . 60
10.2.4 SMI_SPDUOut . 60
10.2.5 SMI_FSPDInOut . 60
10.3 ArgBlock extensions . 62
10.3.1 Overview . 62
10.3.2 FSMasterAccess . 62
10.3.3 FSCPAuthenticity . 63
10.3.4 FSPortConfigList . 63
10.3.5 FSPortStatusList. 66
10.3.6 SPDUIn . 67
10.3.7 SPDUOut . 67
10.3.8 FSPDInOut . 68
10.4 Safety Layer Manager (SLM) . 69
10.4.1 Purpose . 69
10.4.2 FS_PortModes . 69
10.4.3 FSP parameter . 69
10.5 Process Data Exchange (PDE) . 73
10.6 Data Storage (DS) . 74
11 Safety communication layer (SCL) . 74
11.1 Functional requirements . 74
11.2 Communication errors and safety measures . 74
11.3 SCL services . 75
11.3.1 Positioning of safety communication layers (SCL) . 75
11.3.2 FS-Master SCL services . 76
11.3.3 FS-Device SCL services . 77
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SIST EN IEC 61139-2:2022
– 4 – IEC 61139-2:2022 © IEC 2022
11.4 SCL protocol . 79
11.4.1 Protocol phases to consider . 79
11.4.2 FS-Device faults . 80
11.4.3 Safety PDU (SPDU) . 80
11.4.4 FS-Input and FS-Output data . 81
11.4.5 Port number . 81
11.4.6 Status and control . 81
11.4.7 CRC signature . 82
11.4.8 TADI safety considerations (informative) . 83
11.4.9 Data types for SDCI-FS . 84
11.5 SCL behavior . 85
11.5.1 General . 85
11.5.2 SCL state machine of the FS-Master . 85
11.5.3 SCL state machine of the FS-Device . 88
11.5.4 Sequence charts for several use cases . 91
11.5.5 Monitoring of safety times . 98
11.5.6 Reaction in the event of a malfunction . 99
11.5.7 Start-up (communication) . 101
11.6 SCL management . 101
11.6.1 Parameter overview (FSP and FST) . 101
11.6.2 Parameterization approaches . 103
11.7 Integrity measures . 104
11.7.1 IODD integrity . 104
11.7.2 Tool integrity . 104
11.7.3 Transmission integrity . 104
11.7.4 Verification record . 104
11.7.5 Authentication. 105
11.7.6 Storage integrity . 105
11.7.7 FS I/O data structure integrity . 106
11.7.8 Technology parameter (FST) based on IODD . 106
11.7.9 Technology parameter (FST) based on existing Dedicated Tool (IOPD) . 107
11.8 Creation of FSP and FST parameters . 108
11.9 Integration of Dedicated Tools (IOPD) . 109
11.9.1 IOPD interface . 109
11.9.2 Standard interfaces . 109
11.9.3 Backward channel . 110
11.10 Validation . 111
11.11 Passivation . 111
11.11.1 Motivation and means . 111
11.11.2 Port selective (FS-Master) . 111
11.11.3 Signal selective (FS-Terminal) . 112
11.11.4 Qualifier settings in case of communication . 112
11.11.5 Qualifier handling in case of OSSDe . 112
11.12 SCL diagnosis . 113
12 Functional safe processing (FS-P) . 114
12.1 Recommendations for efficient I/O mappings . 114
12.2 Embedded FS controller. 114
Annex A (normative) Extensions to parameters . 115
A.1 Indices and parameters for SDCI-FS . 115
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SIST EN IEC 61139-2:2022
IEC 61139-2:2022 © IEC 2022 – 5 –
A.2 Parameters in detail . 116
A.2.1 FSP_Authenticity . 116
A.2.2 FSP_Port . 116
A.2.3 FSP_AuthentCRC . 117
A.2.4 FSP_ProtVersion . 117
A.2.5 FSP_ProtMode . 117
A.2.6 FSP_Watchdog . 117
A.2.7 FSP_IO_StructCRC . 118
A.2.8 FSP_TechParCRC . 119
A.2.9 FSP_ProtParCRC . 119
A.2.10 FSP_VerifyRecord . 119
A.2.11 FSP_TimeToReady . 119
A.2.12 FSP_MinShutDownTime . 120
A.2.13 FSP_WCDT . 120
A.2.14 FSP_OFDT . 120
A.2.15 FSP_ParamDescCRC . 120
Annex B (normative) Extensions to EventCodes . 121
B.1 Additional FS-Device EventCodes . 121
B.2 Additional Port EventCodes . 121
Annex C (normative) Extensions to Data Types . 123
C.1 Data types for SDCI-FS . 123
C.2 BooleanT (bit) . 123
C.3 IntegerT (16) . 124
C.4 IntegerT (32) . 124
C.5 Safety Code . 125
Annex D (normative) CRC generator polynomials . 126
D.1 Overview of CRC generator polynomials . 126
D.2 Residual error probabilities . 126
D.3 Implementation considerations . 128
D.3.1 Overview . 128
D.3.2 Bit shift algorithm (16 bit) . 128
D.3.3 Lookup table (16 bit) . 128
D.3.4 Bit shift algorithm (32 bit) . 130
D.3.5 Lookup table (32 bit) . 130
D.3.6 Seed values . 131
D.3.7 Octet order f
...
SLOVENSKI STANDARD
oSIST prEN IEC 61139-2:2021
01-november-2021
Industrijska omrežja - Enožični digitalni komunikacijski vmesnik za male senzorje
in dajalnike - 2. del: Funkcijska varnost podaljškov
Industrial networks - Single-drop digital communication interface - Part 2: Functional
safety extensions
Ta slovenski standard je istoveten z: prEN IEC 61139-2:2021
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.110 Omreževanje Networking
oSIST prEN IEC 61139-2:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 61139-2:2021
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oSIST prEN IEC 61139-2:2021
65C/1113/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61139-2 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-09-03 2021-11-26
SUPERSEDES DOCUMENTS:
65C/1081/CD, 65C/1094A/CC
IEC SC 65C : INDUSTRIAL NETWORKS
SECRETARIAT: SECRETARY:
France Ms Valérie DEMASSIEUX
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
SC 65A,SC 65B
Other TC/SCs are requested to indicate their interest, if any,
in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they
are aware and to provide supporting documentation.
TITLE:
Industrial networks – Single-drop digital communication interface – Part 2: Functional safety
extensions
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
NC comments on this CDV will be resolved during the next SC65C/PT61139-2 meeting currently scheduled as
a series of web meetings on November 23rd-25th, 2021. Corresponding meeting notice will be provided in due
time by the convenor.
Copyright © 2021 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
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oSIST prEN IEC 61139-2:2021
– 2 – IEC CDV 61139-2 © IEC:2021
1 CONTENTS
2
3 FOREWORD . 12
4 INTRODUCTION . 14
5 1 Scope . 16
6 2 Normative references . 16
7 3 Terms, definitions, symbols, abbreviated terms, and conventions . 17
8 3.1 Common terms and definitions . 17
9 3.2 SDCI-FS Safety: Additional terms and definitions . 20
10 3.3 Symbols and abbreviated terms . 21
11 3.4 Conventions . 23
12 3.4.1 Behavioral descriptions. 23
13 3.4.2 Memory and transmission octet order . 23
14 4 Overview of SDCI-FS . 24
15 4.1 Purpose of the technology and feature levels . 24
16 4.1.1 Base SDCI-FS technology . 24
17 4.1.2 From "analog" and "switching" to communication . 24
18 4.1.3 Minimized paradigm shift from FS-DI to FS-Master . 25
19 4.1.4 Following the SDCI paradigm (SIO vs. OSSDe) . 26
20 4.1.5 Port class B . 28
21 4.1.6 "USB-Master" with safety parameterization . 28
22 4.1.7 Interoperability matrix of safety devices . 29
23 4.2 Positioning within the automation hierarchy . 29
24 4.3 Wiring, connectors, and power supply . 30
25 4.4 Relationship to SDCI . 30
26 4.5 Communication features and interfaces . 31
27 4.6 Parameterization . 31
28 4.7 Role of FS-Master and FS-Gateway . 31
29 4.8 Mapping to upper-level systems . 32
30 4.9 Structure of the document . 32
31 5 Extensions to the Physical Layer (PL). 32
32 5.1 Overview . 32
33 5.2 Extensions to PL services . 33
34 5.2.1 PL_SetMode . 33
35 5.2.2 PL_Ready . 33
36 5.3 Transmitter/receiver . 33
37 5.3.1 Assumptions for the expansion to OSSDe . 33
38 5.3.2 OSSDe specifics . 34
39 5.3.3 Start-up of an FS-Device (Ready pulse) . 36
40 5.3.4 Electric characteristics of a receiver in FS-Device and FS-Master. 37
41 5.4 Electric and dynamic characteristics of an FS-Device . 38
42 5.5 Electric and dynamic characteristics of an FS-Master port (OSSDe) . 40
43 5.6 FS-Master port FS-DI interface . 41
44 5.7 Wake-up coordination . 41
45 5.8 Fast start-up . 42
46 5.9 Power supply . 42
47 5.10 Medium . 42
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oSIST prEN IEC 61139-2:2021
IEC CDV 61139-2 © IEC:2021 – 3 –
48 5.10.1 Constraints . 42
49 5.10.2 Connectors . 42
50 5.10.3 Cable characteristics . 42
51 6 Extensions to SIO . 43
52 7 Extensions to the data link layer (DL) . 43
53 7.1 Overview . 43
54 7.2 State machine of the FS-Master DL-mode handler . 43
55 7.3 State machine of the FS-Device DL-mode handler . 44
56 8 Extensions to the Master Configuration Manager (CM) . 46
57 9 Extensions of the FS-Device . 47
58 9.1 Principle architecture and models . 47
59 9.1.1 FS-Device architecture . 47
60 9.1.2 FS-Device model . 47
61 9.2 Parameter Manager (PM) . 48
62 9.3 Process Data Exchange (PDE) . 48
63 9.4 Data Storage (DS) . 48
64 9.4.1 General considerations and extensions including safety . 48
65 9.4.2 Backup levels . 49
66 10 Extensions of the FS-Master . 49
67 10.1 Principle architecture . 49
68 10.2 SMI service extensions . 50
69 10.2.1 Overview . 50
70 10.2.2 SMI_FSMasterAccess . 52
71 10.2.3 SMI_SPDUIn . 53
72 10.2.4 SMI_SPDUOut . 53
73 10.3 ArgBlock extensions . 53
74 10.3.1 Overview . 53
75 10.3.2 FSMasterAccess . 54
76 10.3.3 FSCPAuthenticity . 54
77 10.3.4 FSPortConfigList . 54
78 10.3.5 FSPortStatusList . 56
79 10.3.6 SPDUIn . 58
80 10.3.7 SPDUOut . 58
81 10.4 Safety Layer Manager (SLM) . 58
82 10.4.1 Purpose . 58
83 10.4.2 FS_PortModes . 58
84 10.4.3 FSP parameter . 59
85 10.5 Process Data Exchange (PDE) . 61
86 10.6 Data Storage (DS) . 63
87 11 Safety communication layer (SCL) . 63
88 11.1 Functional requirements. 63
89 11.2 Communication errors and safety measures . 63
90 11.3 SCL services . 64
91 11.3.1 Positioning of safety communication layers (SCL) . 64
92 11.3.2 FS-Master SCL services . 65
93 11.3.3 FS-Device SCL services . 66
94 11.4 SCL protocol . 68
95 11.4.1 Protocol phases to consider . 68
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96 11.4.2 FS-Device faults . 69
97 11.4.3 Safety PDU (SPDU) . 69
98 11.4.4 FS-Input and FS-Output data . 69
99 11.4.5 Port number . 69
100 11.4.6 Status and control . 69
101 11.4.7 CRC signature . 70
102 11.4.8 Data types for SDCI-FS . 71
103 11.5 SCL behavior . 72
104 11.5.1 General . 72
105 11.5.2 SCL state machine of the FS-Master . 73
106 11.5.3 SCL state machine of the FS-Device . 75
107 11.5.4 Sequence charts for several use cases . 78
108 11.5.5 Monitoring of safety times . 84
109 11.5.6 Reaction in the event of a malfunction . 85
110 11.5.7 Start-up (communication). 87
111 11.6 SCL management . 87
112 11.6.1 Parameter overview (FSP and FST) . 87
113 11.6.2 Parameterization approaches . 88
114 11.7 Integrity measures . 89
115 11.7.1 IODD integrity . 89
116 11.7.2 Tool integrity . 89
117 11.7.3 Transmission integrity . 89
118 11.7.4 Verification record . 89
119 11.7.5 Authentication . 90
120 11.7.6 Storage integrity . 90
121 11.7.7 FS I/O data structure integrity . 91
122 11.7.8 Technology parameter (FST) based on IODD . 91
123 11.7.9 Technology parameter (FST) based on existing Dedicated Tool (IOPD) . 92
124 11.8 Creation of FSP and FST parameters . 93
125 11.9 Integration of Dedicated Tools (IOPD). 94
126 11.9.1 IOPD interface . 94
127 11.9.2 Standard interfaces . 94
128 11.9.3 Backward channel . 95
129 11.10 Validation. 95
130 11.11 Passivation . 95
131 11.11.1 Motivation and means . 95
132 11.11.2 Port selective (FS-Master) . 96
133 11.11.3 Signal selective (FS-Terminal) . 96
134 11.11.4 Qualifier settings in case of communication . 96
135 11.11.5 Qualifier handling in case of OSSDe . 96
136 11.12 SCL diagnosis. 98
137 12 Functional safe processing (FS-P) . 98
138 12.1 Recommendations for efficient I/O mappings . 98
139 12.2 Embedded FS controller . 98
140 Annex A (normative, safety-related) Extensions to parameters . 99
141 A.1 Indices and parameters for SDCI-FS . 99
142 A.2 Parameters in detail . 100
143 A.2.1 FSP_Authenticity . 100
144 A.2.2 FSP_Port . 100
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145 A.2.3 FSP_AuthentCRC . 100
146 A.2.4 FSP_ProtVersion . 101
147 A.2.5 FSP_ProtMode . 101
148 A.2.6 FSP_Watchdog . 101
149 A.2.7 FSP_IO_StructCRC . 101
150 A.2.8 FSP_TechParCRC . 102
151 A.2.9 FSP_ProtParCRC . 103
152 A.2.10 FSP_VerifyRecord . 103
153 A.2.11 FSP_TimeToReady. 103
154 A.2.12 FSP_WCDT . 103
155 A.2.13 FSP_OFDT . 103
156 A.2.14 FSP_ParamDescCRC . 103
157 Annex B (normative, non-safety related) Extensions to EventCodes . 105
158 B.1 Additional FS-Device EventCodes . 105
159 B.2 Additional Port EventCodes . 105
160 Annex C (normative, safety related) Extensions to Data Types . 107
161 C.1 Data types for SDCI-FS . 107
162 C.2 BooleanT (bit) . 107
163 C.3 IntegerT (16) . 108
164 C.4 IntegerT (32) . 108
165 C.5 Safety Code . 109
166 Annex D (normative, safety related) CRC generator polynomials . 110
167 D.1 Overview of CRC generator polynomials . 110
168 D.2 Residual error probabilities . 110
169 D.3 Implementation considerations . 112
170 D.3.1 Overview . 112
171 D.3.2 Bit shift algorithm (16 bit) . 112
172 D.3.3 Lookup table (16 bit) . 112
173 D.3.4 Bit shift algorithm (32 bit) . 113
174 D.3.5 Lookup table (32 bit) . 114
175 D.3.6 Seed values . 115
176 Annex E (normative, safety related) IODD extensions . 116
177 E.1 General . 116
178 E.2 Schema . 116
179 E.3 IODD constraints . 116
180 E.3.1 General rules . 116
181 E.3.2 Description of the IODD structure . 116
182 E.3.3 Behavior of "Reset" SystemCommands in SDCI-FS . 123
183 E.3.4 Profile Characteristic . 123
184 E.3.5 ProcessDataInput and ProcessDataOutput . 123
185 E.4 IODD conventions . 124
186 E.4.1 Naming . 124
187 E.4.2 Process Data (PD) . 124
188 E.4.3 IODD conventions for user interface . 124
189 E.4.4 Master Tool features . 124
190 E.5 Securing . 125
191 E.5.1 General . 125
192 E.5.2 DefaultValues for FSP . 125
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193 E.5.3 FSP_Authenticity . 126
194 E.5.4 FSP_Protocol . 126
195 E.5.5 FSP_IO_Description . 126
196 E.5.6 Sample serialization for FSP_ParamDescCRC . 126
197 E.5.7 FST and FSP parameters and Data Storage . 127
198 E.5.8 Sample IODD of an FS-Device. 128
199 Annex F (normative, non-safety related) Device Tool Interface (DTI) for SDCI . 138
200 F.1 Purpose of DTI. 138
201 F.2 Base model . 138
202 F.3 Invocation interface. 139
203 F.3.1 Overview . 139
204 F.3.2 Detection of Device Tool . 139
205 F.3.3 Program Interface Description – PID . 142
206 F.3.4 Temporary Parameter File – TPF . 145
207 F.3.5 Temporary Backchannel File – TBF . 150
208 F.3.6 Temporary Acknowledgment File – TAF . 151
209 F.3.7 Invocation behavior . 152
210 F.4 Device data objects (DDO) . 152
211 F.4.1 General . 152
212 F.4.2 Structure of DDO package . 153
213 F.5 Communication Interface . 153
214 F.5.1 General . 153
215 F.5.2 Principle of DTI communications . 154
216 F.5.3 Gateways . 155
217 F.5.4 Configuration of the Communication Server . 156
218 F.5.5 Definition of the Communication Interface . 156
219 F.5.6 Sequence for establishing a communication relation . 156
220 F.5.7 Usage of the Communication Server in stand-alone mode . 157
221 F.5.8 SDCI specifics . 158
222 F.5.9 Changing communication settings. 158
223 F.6 Reaction on incorrect Tool behavior .
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