IO-Link Interface and System Specification Version 1.1.3
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Copyright IO-Link Community 2019 - All Rights Reserved Page 2 of 294
File name: IOL-Interface-Spec_10002_V113_Jun19
The IO-Link technology is standardized in IEC 61131-9. The IO-Link Community is a D-Liaison
member in the corresponding IEC working group. This document (V1.1.3) covers all Change
Requests within the IO-Link CR database up to ID 213 and will be the basis for a maintenance
cycle of IEC 61131-9.
Any comments, proposals, requests on this document are appreciated through the IO-Link CR
database www.io-link-projects.com. Please provide name and email address.
Login: IO-Link-V113
Password: Report
Important notes:
NOTE 1 The IO-Link Community Rules shall be observed prior to the development and marketing of IO-Link products.
The document can be downloaded from the www.io-link.com portal.
NOTE 2 Any IO-Link Device shall provide an associated IODD file. Easy access to the file and potential updates shall
be possible. It is the responsibility of the IO-Link Device manufacturer to test the IODD file with the help of
the IODD-Checker tool available per download from www.io-link.com.
NOTE 3 Any IO-Link devices shall provide an associated manufacturer declaration on the conformity of the device. A
corresponding form with references to relevant documents is available per download from www.io-link.com.
Disclaimer:
The attention of adopters is directed to the possibility that compliance with or adoption of IO-Link Community
specifications may require use of an invention covered by patent rights. The IO-Link Community shall not be
responsible for identifying patents for which a license may be required by any IO-Link Community specification, or
for conducting legal inquiries into the legal validity or scope of those patents that are brought to its attention. IO-
Link Community specifications are prospective and advisory only. Prospective users are responsible for protecting
themselves against liability for infringement of patents.
The information contained in this document is subject to change without notice. The material in this document details
an IO-Link Community specification in accordance with the license and notices set forth on this page. This
document does not represent a commitment to implement any portion of this specification in any company's
products.
WHILE THE INFORMATION IN THIS PUBLICATION IS BELIEVED TO BE ACCURATE, THE IO-LINK COMMUNITY
MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL
INCLUDING, BUT NOT LIMITED TO ANY WARRANTY OF TITLE OR OWNERSHIP, IMPLIED WARRANTY OF
MERCHANTABILITY OR WARRANTY OF FITNESS FOR PARTICULAR PURPOSE OR USE.
In no event shall the IO-Link Community be liable for errors contained herein or for indirect, incidental, special,
consequential, reliance or cover damages, including loss of profits, revenue, data or use, incurred by any user or
any third party. Compliance with this specification does not absolve manufacturers of IO-Link equipment, from the
requirements of safety and regulatory agencies (TÜV, IFA, UL, CSA, etc.).
® is registered trademark. The use is restricted for members of the IO-Link
Community. More detailed terms for the use can be found in the IO-Link Community Rules on
www.io-link.com.
Conventions: In this specification the following key words (in bold text) will be used:
may: indicates flexibility of choice with no implied preference.
should: indicates flexibility of choice with a strongly preferred implementation.
shall: indicates a mandatory requirement. Designers shall implement such mandatory require-
ments to ensure interoperability and to claim conformity with this specification.
highly recommended: indicates that a feature shall be implemented except for well-founded cases. Vendor shall
document the deviation within the user manual and within the manufacturer declaration.
Publisher:
IO-Link Community
c/o PROFIBUS Nutzerorganisation
Haid-und-Neu-Str. 7
76131 Karlsruhe
Germany
Phone: +49 721 / 96 58 590
Fax: +49 721 / 96 58 589
E-mail: info@io-link.com
Web site: www.io-link.com
© No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
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