SIST EN IEC 61131-9:2022
(Main)Programmable controllers - Part 9: Single-drop digital communication interface for small sensors and actuators (SDCI) (IEC 61131-9:2022)
Programmable controllers - Part 9: Single-drop digital communication interface for small sensors and actuators (SDCI) (IEC 61131-9:2022)
This part of IEC 61131 specifies a single-drop digital communication interface technology for small sensors and actuators SDCI (commonly known as IO-LinkTM2), which extends the traditional digital input and digital output interfaces as defined in IEC 61131-2 towards a point-to-point communication link. This technology enables the transfer of parameters to Devices and the delivery of diagnostic information from the Devices to the automation system.
This technology is mainly intended for use with simple sensors and actuators in factory automation, which include small and cost-effective microcontrollers.
This part specifies the SDCI communication services and protocol (physical layer, data link layer and application layer in accordance with the ISO/OSI reference model) for both SDCI Masters and Devices.
This part also includes EMC test requirements.
This part does not cover communication interfaces or systems incorporating multiple point or multiple drop linkages, or integration of SDCI into higher level systems such as fieldbuses.
Speicherprogrammierbare Steuerungen - Teil 9: Schnittstelle für die Kommunikation mit kleinen Sensoren und Aktoren über eine Punkt-zu-Punkt-Verbindung (IEC 61131-9:2022)
Automates programmables - Partie 9: Interface de communication numérique point à point pour les petits capteurs et actionneurs (SDCI) (IEC 61131-9:2022)
L'IEC 61131-9:2022 spécifie une technologie d'interface de communication numérique point à point pour petits capteurs et actionneurs – SDCI – (généralement connue sous l'appellation IO-Link™[1]). Elle permet d'étendre les interfaces classiques d'entrées et de sorties numériques (telles que définies dans l'IEC 61131-2) en une liaison de communication point à point pour l'échange de données complexe dans les deux sens. Cette technologie permet également de transférer des paramètres aux Dispositifs et de fournir au système d'automatisation des informations de diagnostic et d'identification depuis les Dispositifs.
Cette technologie est principalement destinée à l’utilisation en automatisation d'usine avec de simples capteurs et actionneurs intégrant de petits microcontrôleurs économiques.
Le présent document spécifie les services et le protocole de communication SDCI (couche physique, couche de liaison de données et couche Application conformément au modèle de référence ISO/OSI) pour les Maîtres et Dispositifs SDCI.
Le présent document inclut également des exigences d'essai CEM.
Le présent document ne couvre pas les interfaces ou systèmes de communication comportant des connexions multipoints ou à liaisons multiples, ou encore l'intégration de SDCI dans des systèmes de niveau supérieur tels que les bus de terrain.
[1] IO-LinkTM est une marque commerciale de "IO-Link Community". Cette information est fournie pour la commodité des utilisateurs du présent document et ne signifie nullement que l'IEC recommande l'emploi exclusif de la marque ou de l’un quelconque de ses produits. La conformité au présent document ne nécessite pas l’utilisation des logos déposés pour IO-LinkTM. L’utilisation des logos déposés pour IO-LinkTM nécessite l’autorisation du "IO-Link Community".
Programirljivi krmilniki - 9. del: Enožični digitalni komunikacijski vmesnik za male senzorje in dajalnike (SDCI) (IEC 61131-9:2022)
Ta del standarda IEC 61131 določa tehnologijo enožičnih digitalnih komunikacijskih vmesnikov za male senzorje in dajalnike SDCI (znane kot IO-LinkTM2), ki razširjajo tradicionalne digitalne vhodne in izhodne vmesnike, kot so opredeljeni v standardu IEC 61131-2, na komunikacijsko povezavo od točke do točke. Ta tehnologija omogoča prenos parametrov v naprave in posredovanje diagnostičnih informacij iz naprav v avtomatizacijski sistem.
Ta tehnologija je namenjena predvsem uporabi z enostavnimi senzorji in dajalniki v tovarniški avtomatizaciji, ki vsebuje majhne in stroškovno učinkovite mikrokrmilnike.
Ta del določa komunikacijske storitve SDCI in protokol (fizično plast, plast podatkovnih povezav in aplikacijsko plast v skladu z referenčnim modelom ISO/OSI) za prednaprave in naprave SDCI.
Ta del prav tako vključuje zahteve za preskus elektromagnetne združljivosti.
Ta del ne zajema komunikacijskih vmesnikov ali sistemov, ki vsebujejo večtočkovne ali multidrop povezave, ali integracijo SDCI v sisteme višje ravni, kot so področna vodila.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 61131-9:2022
01-oktober-2022
Nadomešča:
SIST EN 61131-9:2014
Programirljivi krmilniki - 9. del: Enožični digitalni komunikacijski vmesnik za male
senzorje in dajalnike (SDCI) (IEC 61131-9:2022)
Programmable controllers - Part 9: Single-drop digital communication interface for small
sensors and actuators (SDCI) (IEC 61131-9:2022)
Speicherprogrammierbare Steuerungen - Teil 9: Schnittstelle für die Kommunikation mit
kleinen Sensoren und Aktoren über eine Punkt-zu-Punkt-Verbindung (IEC 61131-
9:2022)
Automates programmables - Partie 9: Interface de communication numérique point à
point pour les petits capteurs et actionneurs (SDCI) (IEC 61131-9:2022)
Ta slovenski standard je istoveten z: EN IEC 61131-9:2022
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.240.50 Uporabniške rešitve IT v IT applications in industry
industriji
SIST EN IEC 61131-9:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 61131-9:2022
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SIST EN IEC 61131-9:2022
EUROPEAN STANDARD EN IEC 61131-9
NORME EUROPÉENNE
EUROPÄISCHE NORM July 2022
ICS 25.040.40; 35.240.50 Supersedes EN 61131-9:2013
English Version
Programmable controllers - Part 9: Single-drop digital
communication interface for small sensors and actuators (SDCI)
(IEC 61131-9:2022)
Automates programmables - Partie 9: Interface de Speicherprogrammierbare Steuerungen - Teil 9:
communication numérique point à point pour les petits Schnittstelle für die Kommunikation mit kleinen Sensoren
capteurs et actionneurs (SDCI) und Aktoren über eine Punkt-zu-Punkt-Verbindung
(IEC 61131-9:2022) (IEC 61131-9:2022)
This European Standard was approved by CENELEC on 2022-07-04. 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,
Turkey 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 61131-9:2022 E
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SIST EN IEC 61131-9:2022
EN IEC 61131-9:2022 (E)
European foreword
The text of document 65B/1218/FDIS, future edition 2 of IEC 61131-9, prepared by SC 65B
"Measurement and control devices" 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 61131-9:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-04-04
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-07-04
document have to be withdrawn
This document supersedes EN 61131-9:2013 and all of its amendments and corrigenda (if any).
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 61131-9:2022 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 60870-5-1 NOTE Harmonized as EN 60870-5-1
IEC 61158-2 NOTE Harmonized as EN 61158-2
IEC/TR 62453-61 NOTE Harmonized as CLC/TR 62453-61
IEC 62443 (series) NOTE Harmonized as EN IEC 62443 (series)
2
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SIST EN IEC 61131-9:2022
EN IEC 61131-9:2022 (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 60664 series Insulation coordination for equipment EN IEC 60664 series
within low-voltage supply systems
IEC 60947-5-2 - Low-voltage switchgear and controlgear - EN IEC 60947-5-2 -
Part 5-2: Control circuit devices and
switching elements - Proximity switches
IEC 61000-4-2 - Electromagnetic compatibility (EMC) - EN 61000-4-2 -
Part 4-2: Testing and measurement
techniques - Electrostatic discharge
immunity test
IEC 61000-4-3 - Electromagnetic compatibility (EMC) - EN IEC 61000-4-3 -
Part 4-3: Testing and measurement
techniques - Radiated, radio-frequency,
electromagnetic field immunity test
IEC 61000-4-4 - Electromagnetic compatibility (EMC) - EN 61000-4-4 -
Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst
immunity test
IEC 61000-4-5 - Electromagnetic compatibility (EMC) - EN 61000-4-5 -
Part 4-5: Testing and measurement
techniques - Surge immunity test
IEC 61000-4-6 - Electromagnetic compatibility (EMC) - EN 61000-4-6 -
Part 4-6: Testing and measurement
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
IEC 61000-4-11 - Electromagnetic compatibility (EMC) - EN IEC 61000-4-11 -
Part 4-11: Testing and measurement
techniques - Voltage dips, short
interruptions and voltage variations
immunity tests for equipment with input
current up to 16 A per phase
IEC 61000-6-2 - Electromagnetic compatibility (EMC) - EN IEC 61000-6-2 -
Part 6-2: Generic standards - Immunity
standard for industrial environments
3
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SIST EN IEC 61131-9:2022
EN IEC 61131-9:2022 (E)
Publication Year Title EN/HD Year
IEC 61000-6-4 - Electromagnetic compatibility (EMC) - EN IEC 61000-6-4 -
Part 6-4: Generic standards - Emission
standard for industrial environments
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 61076-2-101 - Connectors for electronic equipment - EN 61076-2-101 -
Product requirements - Part 2-101:
Circular connectors - Detail specification
for M12 connectors with screw-locking
IEC 61131-1 - Programmable controllers - Part 1: EN 61131-1 -
General information
IEC 61131-2 - Industrial-process measurement and - -
control - Programmable controllers -
Part 2: Equipment requirements and tests
4
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SIST EN IEC 61131-9:2022
IEC 61131-9
®
Edition 2.0 2022-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Programmable controllers –
Part 9: Single-drop digital communication interface for small sensors and
actuators (SDCI)
Automates programmables –
Partie 9: Interface de communication numérique point à point pour petits
capteurs et actionneurs (SDCI)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.240.50 ISBN 978-2-8322-1261-5
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 61131-9:2022
– 2 – IEC 61131-9:2022 © IEC 2022
CONTENTS
FOREWORD . 20
INTRODUCTION . 22
0.1 General . 22
0.2 Patent declaration . 23
1 Scope . 24
2 Normative references . 24
3 Terms, definitions, symbols, abbreviated terms, and conventions . 25
3.1 Terms and definitions . 25
3.2 Symbols and abbreviated terms . 29
3.3 Conventions . 31
3.3.1 General . 31
3.3.2 Service parameters. 32
3.3.3 Service procedures . 32
3.3.4 Service attributes . 32
3.3.5 Figures . 33
3.3.6 Tables . 33
3.3.7 Transmission octet order . 33
3.3.8 Behavioral descriptions . 33
TM
4 Overview of SDCI (IO-Link ) . 35
4.1 Purpose of technology . 35
4.2 Positioning within the automation hierarchy . 35
4.3 Wiring, connectors and power . 36
4.4 Communication features of SDCI . 36
4.5 Role of a Master . 39
4.6 SDCI configuration . 40
4.7 Mapping to fieldbuses and/or other upper-level systems . 40
4.8 Standard structure . 40
5 Physical Layer (PL) . 41
5.1 General . 41
5.1.1 Basics . 41
5.1.2 Topology . 41
5.2 Physical layer services. 42
5.2.1 Overview . 42
5.2.2 PL services . 43
5.3 Transmitter/Receiver . 45
5.3.1 Description method . 45
5.3.2 Electrical requirements . 45
5.3.3 Timing requirements . 50
5.4 Power supply . 54
5.4.1 Power supply options . 54
5.4.2 Port Class B . 55
5.4.3 Power-on requirements . 56
5.5 Medium . 56
5.5.1 Connectors . 56
5.5.2 Cable . 57
6 Standard Input and Output (SIO) . 58
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SIST EN IEC 61131-9:2022
IEC 61131-9:2022 © IEC 2022 – 3 –
7 Data link layer (DL) . 59
7.1 General . 59
7.2 Data link layer services . 60
7.2.1 DL-B services . 60
7.2.2 DL-A services . 71
7.3 Data link layer protocol . 75
7.3.1 Overview . 75
7.3.2 DL-mode handler . 76
7.3.3 Message handler . 84
7.3.4 Process Data handler . 92
7.3.5 On-request Data handler . 95
7.3.6 ISDU handler . 98
7.3.7 Command handler . 102
7.3.8 Event handler . 105
8 Application layer (AL) . 108
8.1 General . 108
8.2 Application layer services . 109
8.2.1 AL services within Master and Device . 109
8.2.2 AL Services . 110
8.3 Application layer protocol . 118
8.3.1 Overview . 118
8.3.2 On-request Data transfer . 118
8.3.3 Event processing . 124
8.3.4 Process Data cycles . 127
9 System Management (SM) . 128
9.1 General . 128
9.2 System Management of the Master . 128
9.2.1 Overview . 128
9.2.2 SM Master services . 130
9.2.3 SM Master protocol . 135
9.3 System Management of the Device . 143
9.3.1 Overview . 143
9.3.2 SM Device services . 145
9.3.3 SM Device protocol. 151
10 Device . 158
10.1 Overview. 158
10.2 Process Data Exchange (PDE) . 159
10.3 Parameter Manager (PM) . 159
10.3.1 General . 159
10.3.2 Parameter Manager state machine . 159
10.3.3 Dynamic parameter . 162
10.3.4 Single parameter . 162
10.3.5 Block Parameter . 163
10.3.6 Concurrent parameterization access . 166
10.3.7 Command handling . 166
10.4 Data Storage (DS) . 167
10.4.1 General . 167
10.4.2 Data Storage state machine . 167
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SIST EN IEC 61131-9:2022
– 4 – IEC 61131-9:2022 © IEC 2022
10.4.3 DS configuration . 169
10.4.4 DS memory space . 169
10.4.5 DS Index_List . 169
10.4.6 DS parameter availability . 170
10.4.7 DS without ISDU . 170
10.4.8 DS parameter change indication . 170
10.5 Event Dispatcher (ED) . 170
10.6 Device features . 170
10.6.1 General . 170
10.6.2 Device backward compatibility . 170
10.6.3 Protocol revision compatibility . 171
10.6.4 Visual SDCI indication . 171
10.6.5 Parameter access locking . 171
10.6.6 Data Storage locking . 171
10.6.7 Locking of local parameter entries . 171
10.6.8 Locking of local user interface . 171
10.6.9 Offset time . 171
10.6.10 Data Storage concept . 172
10.6.11 Block Parameter . 172
10.7 Device reset options . 172
10.7.1 Overview . 172
10.7.2 Device reset . 173
10.7.3 Application reset . 173
10.7.4 Restore factory settings . 174
10.7.5 Back-to-box . 174
10.8 Device design rules and constraints . 174
10.8.1 General . 174
10.8.2 Process Data . 174
10.8.3 Communication loss . 175
10.8.4 Direct Parameter . 175
10.8.5 ISDU communication channel . 175
10.8.6 DeviceID rules related to Device variants . 175
10.8.7 Protocol constants . 176
10.9 IO Device description (IODD) . 176
10.10 Device diagnosis . 176
10.10.1 Concepts . 176
10.10.2 Events . 177
10.10.3 Visual indicators . 178
10.11 Device connectivity . 179
11 Master . 179
11.1 Overview. 179
11.1.1 Positioning of Master and Gateway Applications . 179
11.1.2 Structure, applications, and services of a Master . 180
11.1.3 Object view of a Master and its Ports . 181
11.2 Services of the Standardized Master Interface (SMI) . 182
11.2.1 Overview . 182
11.2.2 Structure of SMI service arguments . 183
11.2.3 Concurrency and prioritization of SMI services . 184
11.2.4 SMI_MasterIdentification . 185
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SIST EN IEC 61131-9:2022
IEC 61131-9:2022 © IEC 2022 – 5 –
11.2.5 SMI_PortConfiguration. 186
11.2.6 SMI_ReadbackPortConfiguration . 187
11.2.7 SMI_PortStatus . 189
11.2.8 SMI_DSToParServ . 190
11.2.9 SMI_ParServToDS . 191
11.2.10 SMI_DeviceWrite . 193
11.2.11 SMI_DeviceRead . 194
11.2.12 SMI_ParamWriteBatch . 195
11.2.13 SMI_ParamReadBatch . 197
11.2.14 SMI_PortPowerOffOn . 198
11.2.15 SMI_DeviceEvent . 200
11.2.16 SMI_PortEvent . 201
11.2.17 SMI_PDIn . 201
11.2.18 SMI_PDOut . 203
11.2.19 SMI_PDInOut . 204
11.2.20 SMI_PDInIQ . 205
11.2.21 SMI_PDOutIQ . 207
11.2.22 SMI_PDReadbackOutIQ . 208
11.3 Configuration Manager (CM) . 209
11.3.1 Coordination of Master applications . 209
11.3.2 State machine of the Configuration Manager . 212
11.4 Data Storage (DS) . 217
11.4.1 Overview . 217
11.4.2 DS data object . 217
11.4.3 Backup and Restore . 217
11.4.4 DS state machine .
...
SLOVENSKI STANDARD
oSIST prEN IEC 61131-9:2021
01-julij-2021
Programirljivi kontrolniki - 9. del: Enožični digitalni komunikacijski vmesnik za
male senzorje in dajalnike
Programmable controllers - Part 9: Single-drop digital communication interface for small
sensors and actuators (SDCI)
Speicherprogrammierbare Steuerungen - Teil 9: Schnittstelle für die Kommunikation mit
kleinen Sensoren und Aktoren über eine Punkt-zu-Punkt-Verbindung
Automates programmables - Partie 9: Interface de communication numérique point à
point pour les petits capteurs et actionneurs (SDCI)
Ta slovenski standard je istoveten z: prEN IEC 61131-9:2021
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.240.50 Uporabniške rešitve IT v IT applications in industry
industriji
oSIST prEN IEC 61131-9:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 61131-9:2021
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oSIST prEN IEC 61131-9:2021
65B/1199/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61131-9 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-05-07 2021-07-30
SUPERSEDES DOCUMENTS:
65B/1196/RR
IEC SC 65B : MEASUREMENT AND CONTROL DEVICES
SECRETARIAT: SECRETARY:
United States of America Mr Angus Low
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 65,SC 65C
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:
Programmable controllers - Part 9: Single-drop digital communication interface for small
sensors and actuators (SDCI)
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
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 61131-9:2021
65B/1199/CDV – 2 – IEC CDV 61131-9 Ed2 © IEC:2021
Title:
Programmable controllers — Part 9: Single-drop digital communication interface for small sensors and
actuators (SDCI)
This draft has no official front page. This front page is for internal use only. The official
front pages will be added later before circulation of the document to IEC National
Committees.
For the sake of estimating the translation effort for this edition 2: The following graph
identifies clauses with changes beyond simple corrections (typos, etc.). The
corresponding headers in the document are marked in yellow. Recent changes requested
by the support organization are marked in yellow too.
Lexical part
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oSIST prEN IEC 61131-9:2021
IEC CDV 61131-9 Ed2 © IEC:2021 – 3 – 65B/1199/CDV
1
2 CONTENTS
3
4 FOREWORD . 21
5 INTRODUCTION . 23
6 0.1 General . 23
7 0.2 Patent declaration . 23
8 1 Scope . 25
9 2 Normative references . 25
10 3 Terms, definitions, symbols, abbreviated terms, and conventions . 26
11 3.1 Terms and definitions. 26
12 3.2 Symbols and abbreviated terms . 30
13 3.3 Conventions . 32
14 3.3.1 General . 32
15 3.3.2 Service parameters . 32
16 3.3.3 Service procedures . 32
17 3.3.4 Service attributes. 33
18 3.3.5 Figures . 33
19 3.3.6 Transmission octet order . 33
20 3.3.7 Behavioral descriptions. 33
TM
21 4 Overview of SDCI (IO-Link ) . 35
22 4.1 Purpose of technology . 35
23 4.2 Positioning within the automation hierarchy . 35
24 4.3 Wiring, connectors and power . 36
25 4.4 Communication features of SDCI . 36
26 4.5 Role of a Master . 38
27 4.6 SDCI configuration . 39
28 4.7 Mapping to fieldbuses and/or other upper-level systems . 39
29 4.8 Standard structure . 39
30 5 Physical Layer (PL) . 40
31 5.1 General . 40
32 5.1.1 Basics . 40
33 5.1.2 Topology . 40
34 5.2 Physical layer services . 40
35 5.2.1 Overview . 40
36 5.2.2 PL services . 42
37 5.3 Transmitter/Receiver . 43
38 5.3.1 Description method . 43
39 5.3.2 Electrical requirements . 43
40 5.3.3 Timing requirements . 48
41 5.4 Power supply . 51
42 5.4.1 Power supply options . 51
43 5.4.2 Port Class B . 52
44 5.4.3 Power-on requirements . 53
45 5.5 Medium . 53
46 5.5.1 Connectors . 53
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oSIST prEN IEC 61131-9:2021
65B/1199/CDV – 4 – IEC CDV 61131-9 Ed2 © IEC:2021
47 5.5.2 Cable . 54
48 6 Standard Input and Output (SIO) . 55
49 7 Data link layer (DL). 55
50 7.1 General . 55
51 7.2 Data link layer services . 57
52 7.2.1 DL-B services . 57
53 7.2.2 DL-A services . 66
54 7.3 Data link layer protocol . 70
55 7.3.1 Overview . 70
56 7.3.2 DL-mode handler . 71
57 7.3.3 Message handler . 78
58 7.3.4 Process Data handler . 85
59 7.3.5 On-request Data handler . 88
60 7.3.6 ISDU handler . 91
61 7.3.7 Command handler . 95
62 7.3.8 Event handler . 97
63 8 Application layer (AL) . 100
64 8.1 General . 100
65 8.2 Application layer services . 101
66 8.2.1 AL services within Master and Device . 101
67 8.2.2 AL Services . 101
68 8.3 Application layer protocol . 109
69 8.3.1 Overview . 109
70 8.3.2 On-request Data transfer . 109
71 8.3.3 Event processing . 113
72 8.3.4 Process Data cycles . 117
73 9 System Management (SM) . 118
74 9.1 General . 118
75 9.2 System Management of the Master . 118
76 9.2.1 Overview . 118
77 9.2.2 SM Master services . 120
78 9.2.3 SM Master protocol. 125
79 9.3 System Management of the Device . 132
80 9.3.1 Overview . 132
81 9.3.2 SM Device services . 134
82 9.3.3 SM Device protocol . 139
83 10 Device . 146
84 10.1 Overview . 146
85 10.2 Process Data Exchange (PDE) . 146
86 10.3 Parameter Manager (PM) . 147
87 10.3.1 General . 147
88 10.3.2 Parameter manager state machine . 147
89 10.3.3 Dynamic parameter . 149
90 10.3.4 Single parameter . 149
91 10.3.5 Block Parameter . 151
92 10.3.6 Concurrent parameterization access . 153
93 10.3.7 Command handling . 153
94 10.4 Data Storage (DS) . 153
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95 10.4.1 General . 153
96 10.4.2 Data Storage state machine . 154
97 10.4.3 DS configuration . 156
98 10.4.4 DS memory space . 156
99 10.4.5 DS Index_List . 156
100 10.4.6 DS parameter availability . 156
101 10.4.7 DS without ISDU . 157
102 10.4.8 DS parameter change indication . 157
103 10.5 Event Dispatcher (ED) . 157
104 10.6 Device features . 157
105 10.6.1 General . 157
106 10.6.2 Device backward compatibility . 157
107 10.6.3 Protocol revision compatibility . 157
108 10.6.4 Visual SDCI indication . 158
109 10.6.5 Parameter access locking . 158
110 10.6.6 Data Storage locking . 158
111 10.6.7 Locking of local parameter entries . 158
112 10.6.8 Locking of local user interface . 158
113 10.6.9 Offset time . 158
114 10.6.10 Data Storage concept . 159
115 10.6.11 Block Parameter . 159
116 10.7 Device reset options . 159
117 10.7.1 Overview . 159
118 10.7.2 Device reset . 160
119 10.7.3 Application reset . 160
120 10.7.4 Restore factory settings . 160
121 10.7.5 Back-to-box . 160
122 10.8 Device design rules and constraints . 161
123 10.8.1 General . 161
124 10.8.2 Process Data . 161
125 10.8.3 Communication loss . 161
126 10.8.4 Direct Parameter . 161
127 10.8.5 ISDU communication channel . 161
128 10.8.6 DeviceID rules related to Device variants . 162
129 10.8.7 Protocol constants . 162
130 10.9 IO Device description (IODD) . 162
131 10.10 Device diagnosis . 163
132 10.10.1 Concepts . 163
133 10.10.2 Events . 164
134 10.10.3 Visual indicators . 164
135 10.11 Device connectivity . 165
136 11 Master . 165
137 11.1 Overview . 165
138 11.1.1 Positioning of Master and Gateway Applications . 165
139 11.1.2 Structure, applications, and services of a Master . 166
140 11.1.3 Object view of a Master and its ports . 167
141 11.2 Services of the Standardized Master Interface (SMI) . 167
142 11.2.1 Overview . 167
143 11.2.2 Structure of SMI service arguments . 169
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144 11.2.3 Concurrency and prioritization of SMI services . 169
145 11.2.4 SMI_MasterIdentification . 170
146 11.2.5 SMI_PortConfiguration . 171
147 11.2.6 SMI_ReadbackPortConfiguration . 172
148 11.2.7 SMI_PortStatus . 174
149 11.2.8 SMI_DSToParServ . 175
150 11.2.9 SMI_ParServToDS . 176
151 11.2.10 SMI_DeviceWrite . 177
152 11.2.11 SMI_DeviceRead . 178
153 11.2.12 SMI_ParamWriteBatch . 180
154 11.2.13 SMI_ParamReadBatch. 181
155 11.2.14 SMI_PortPowerOffOn . 183
156 11.2.15 SMI_DeviceEvent . 184
157 11.2.16 SMI_PortEvent . 184
158 11.2.17 SMI_PDIn . 185
159 11.2.18 SMI_PDOut . 187
160 11.2.19 SMI_PDInOut . 188
161 11.2.20 SMI_PDInIQ . 189
162 11.2.21 SMI_PDOutIQ . 190
163 11.2.22 SMI_PDReadbackOutIQ . 191
164 11.3 Configuration Manager (CM) . 192
165 11.3.1 Coordination of Master applications . 192
166 11.3.2 State machine of the Configuration Manager . 195
167 11.4 Data Storage (DS) . 199
168 11.4.1 Overview . 199
169 11.4.2 DS data object . 199
170 11.4.3 Backup and Restore . 199
171 11.4.4 DS state machine . 199
172 11.4.5 Parameter selection for Data Storage . 206
173 11.5 On-request Data exchange (ODE) . 206
174 11.6 Diagnosis Unit (DU) . 207
175 11.6.1 General . 207
176 11.6.2 Device specific Events . 207
177 11.6.3 Port specific Events . 208
178 11.6.4 Dynamic diagnosis status . 208
179 11.6.5 Best practice recommendations . 208
180 11.7 PD Exchange (PDE) . 209
181 11.7.1 General . 209
182 11.7.2 Process Data input mapping . 209
183 11.7.3 Process Data output mapping . 211
184 11.7.4 Process Data invalid/valid qualifier status . 211
185 12 Holistic view on Data Storage . 212
186 12.1 User point of view . 212
187 12.2 Operations and preconditions . 212
188 12.2.1 Purpose and objectives . 212
189 12.2.2 Preconditions for the activation of the Data Storage mechanism . 213
190 12.2.3 Preconditions for the types of Devices to be replaced . 213
191 12.2.4 Preconditions for the parameter sets . 213
192 12.3 Commissioning . 214
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193 12.3.1 On-line commissioning . 214
194 12.3.2 Off-site commissioning . 214
195 12.4 Backup Levels . 214
196 12.4.1 Purpose . 214
197 12.4.2 Overview . 214
198 12.4.3 Commissioning ("Disable") . 215
199 12.4.4 Production ("Backup/Restore") . 215
200 12.4.5 Production ("Restore") . 216
201 12.5 Use cases . 216
202 12.5.1 Device replacement (@ "Backup/Restore") . 216
203 12.5.2 Device replacement (@ "Restore"). 217
204 12.5.3 Master replacement . 217
205 12.5.4 Project replication . 217
206 13 Integration . 217
207 13.1 Generic Master model for system integration . 217
208 13.2 Role of gateway applications . 218
209 13.2.1 Clients . 218
210 13.2.2 Coordination . 218
211 13.3 Security . 218
212 13.4 Special gateway applications . 219
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