EN 61131-9:2013

Programmable controllers - Part 9: Single-drop digital communication interface for small sensors and actuators (SDCI)

IEC 61131-9:2013 specifies a single-drop digital communication interface technology for small sensors and actuators SDCI (commonly known as IO-Link), 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.

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 petits capteurs et actionneurs (SDCI)

La CEI 61131-9:2013 spécifie une technologie d'interface de communication numérique point à point pour petits capteurs et actionneurs - SDCI - (généralement connue sous l'appellation IO-Lin); elle permet d'étendre les interfaces classiques d'entrées et de sorties numériques (telles que définies dans la CEI 61131-2) en une liaison de communication point à point. Cette technologie permet de transférer des paramètres aux Dispositifs et de fournir au système d'automatisation des informations de diagnostic depuis les Dispositifs.

Programirljivi kontrolniki - 9. del: Enožični digitalni komunikacijski vmesnik za male senzorje in dajalnike (SDCI) (IEC 61131-9:2013)

Ta del standarda IEC 61131 določa tehnologijo enožičnih digitalnih komunikacijskih vmesnikov za male senzorje in dajalnike SDCI (znane kot IO-Link™2), ki razširjajo tradicionalne digitalne vhodne in izhodne vmesnike, kot jih določa standard IEC 61131-2, na komunikacijsko povezavo od točke do točke. Ta tehnologija omogoča prenos parametrov v naprave in zagotavljanje diagnostičnih informacij iz naprav v avtomatizacijski sistem. Ta tehnologija je zlasti namenjena uporabi z enostavnimi senzorji in dajalniki v tovarniški avtomatizaciji, ki vsebuje majhne in stroškovno učinkovite mikrokontrolnike. 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

• Status: Published
• Publication Date: 12-Dec-2013
• Withdrawal Date: 15-Oct-2016
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.240.50 - IT applications in industry
• Technical Committee: CLC/TC 65X - Industrial-process measurement, control and automation
• Drafting Committee: IEC/SC 65B - IEC_SC_65B
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 13-Dec-2013
• Completion Date: 13-Dec-2013
• Ref Project: SIST EN 61131-9:2014 - Programmable controllers - Part 9: Single-drop digital communication interface for small sensors and actuators (SDCI) (IEC 61131-9:2013)

Relations

• Replaced By: EN IEC 61131-9:2022 - Programmable controllers - Part 9: Single-drop digital communication interface for small sensors and actuators (SDCI)
• Effective Date: 26-Jul-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2014
3URJUDPLUOMLYLNRQWUROQLNLGHO(QRåLþQLGLJLWDOQLNRPXQLNDFLMVNLYPHVQLN]D
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Programmable controllers - Part 9: Single-drop digital communication interface for small
sensors and actuators (SDCI) (IEC 61131-9:2013)
Speicherprogrammierbare Steuerungen - Teil 9: Leitlinien für die Anwendung und
Implementierung von Programmiersprachen für Speicherprogrammierbare Steuerungen
(IEC 61131-9:2013)
Automates programmables - Partie 9: Interface de communication numérique point à
point pour les petits capteurs et actionneurs (SDCI) (CEI 61131-9:2013)
Ta slovenski standard je istoveten z: EN 61131-9:2013
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61131-9
NORME EUROPÉENNE
December 2013
EUROPÄISCHE NORM
ICS 25.040.40; 35.240.50
English version
Programmable controllers -
Part 9: Single-drop digital communication interface for small sensors and
actuators (SDCI)
(IEC 61131-9:2013)
Automates programmables -  Speicherprogrammierbare Steuerungen -
Partie 9: Interface de communication Teil 9: Schnittstelle für die Kommunikation
numérique point à point pour petits mit kleinen Sensoren und Aktoren über
capteurs et actionneurs (SDCI) eine Punkt-zu-Punkt-Verbindung
(CEI 61131-9:2013) (IEC 61131-9:2013)

This European Standard was approved by CENELEC on 2013-10-16. 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
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

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61131-9:2013 E
Foreword
The text of document 65B/874/FDIS, future edition 1 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 61131-9:2013.

The following dates are fixed:
• latest date by which the document has (dop) 2014-07-16
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2016-10-16
• latest date by which the national
standards conflicting with the
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 [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of the International Standard IEC 61131-9:2013 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 60870-5-1:1990 NOTE Harmonised as EN 60870-5-1:1993 (not modified).
IEC 61158-2 NOTE Harmonised as EN 61158-2 (not modified).
IEC/TR 62453-61 NOTE Harmonised as CLC/TR 62453-61 (not modified).
ISOIEC 7498-1 NOTE Harmonised as EN ISOIEC 7498-1 (not modified).

- 3 - EN 61131-9:2013
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60947-5-2 - Low-voltage switchgear and controlgear - EN 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 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) - FprEN 61000-4-5 -
Part 4-5: Testing and measurement
techniques - Surge immunity test

IEC 61000-4-6 - Electromagnetic compatibility (EMC) - FprEN 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 61000-4-11 -
Part 4-11: Testing and measurement
techniques - Voltage dips, short interruptions
and voltage variations immunity tests

IEC 61000-6-2 - Electromagnetic compatibility (EMC) - EN 61000-6-2 -
Part 6-2: Generic standards - Immunity for + corr. September -
industrial environments
IEC 61000-6-4 - Electromagnetic compatibility (EMC) - EN 61000-6-4 -
Part 6-4: Generic standards - Emission
standard for industrial environments

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 - EN 61131-1 -
Part 1: General information
Publication Year Title EN/HD Year
1)
IEC 61131-2 - Programmable controllers - EN 61131-2 -
Part 2: Equipment requirements and tests

IEC/TR 62390 - Common automation device - Profile guideline - -

ISO/IEC 646 1991 Information technology - ISO 7-bit coded - -
character set for information interchange

ISO/IEC 2022 - Information technology - Character code - -
structure and extension techniques

ISO/IEC 10646 - Information technology - Universal Coded - -
Character Set (UCS)
ISO/IEC 10731 - Information technology - Open Systems - -
Interconnection - Basic reference model -
Conventions for the definition of OSI services

ISO 1177 - Information processing - Character structure for - -
start/stop and synchronous character-oriented
transmission
IEEE 754 2008 Binary floating-point arithmetic - -

1)
EN 61131-2 is superseded by EN 61010-2-201:2013, which is based on IEC 61010-2-201:2013.

IEC 61131-9 ®
Edition 1.0 2013-09
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
PRICE CODE
INTERNATIONALE
CODE PRIX XH
ICS 25.040.40; 35.240.50 ISBN 978-2-8322-1076-5

– 2 – 61131-9 © IEC:2013
CONTENTS
FOREWORD . 14
INTRODUCTION . 16
1 Scope . 18
2 Normative references . 18
3 Terms, definitions, symbols, abbreviated terms and conventions . 19
3.1 Terms and definitions . 19
3.2 Symbols and abbreviated terms. 23
3.3 Conventions . 25
3.3.1 General . 25
3.3.2 Service parameters . 25
3.3.3 Service procedures . 26
3.3.4 Service attributes . 26
3.3.5 Figures . 26
3.3.6 Transmission octet order . 26
3.3.7 Behavioral descriptions . 27
TM
4 Overview of SDCI (IO-Link ) . 27
4.1 Purpose of technology . 27
4.2 Positioning within the automation hierarchy . 28
4.3 Wiring, connectors and power . 29
4.4 Communication features of SDCI . 29
4.5 Role of a Master . 31
4.6 SDCI configuration . 32
4.7 Mapping to fieldbuses . 32
4.8 Standard structure . 32
5 Physical Layer (PL) . 33
5.1 General . 33
5.1.1 Basics . 33
5.1.2 Topology . 33
5.2 Physical layer services . 34
5.2.1 Overview . 34
5.2.2 PL services . 35
5.3 Transmitter/Receiver . 37
5.3.1 Description method . 37
5.3.2 Electrical requirements . 37
5.3.3 Timing requirements . 41
5.4 Power supply . 44
5.4.1 Power supply options . 44
5.4.2 Power-on requirements. 45
5.5 Medium . 45
5.5.1 Connectors . 45
5.5.2 Cable. 47
6 Standard Input and Output (SIO) . 48
7 Data link layer (DL) . 48
7.1 General . 48
7.2
...