Skip to main content


IO-Link Integration for PROFINET



It is the purpose of this document to map the IO-Link technology according to IEC 61131-9  into PROFINET in such a manner that the user benefit is maximized through standardization.

From a PROFINET point of view this can be achieved through pursuing the following objectives:
• IO-Link mechanisms should be transformed into PROFINET mechanisms to hide the differences as much as possible ("virtual PROFINET devices");
• "Look & Feel" of the deviations should be harmonized across manufacturer borders through standardization;
• It should be possible to use one of the IO-Link Tools (PDCTs) for several IO-Link Masters from different manufacturers/brands through standardized interfaces to the Masters.


Differences between V1.1 and V1.0 of edition 2 of the “IO-Link Integration into PROFINET” are:

  1. New structure of the specification with clear, consequent, and seamless descriptions;
  2. Introduction of a PROFINET life cycle manager covering all phases of operations and use cases (former “dynamic characteristics”);
  3. Improved and comprehensive diagnosis mapping methods;
  4. General adaptation of the new Standardized Master Interface;
  5. Data Storage and automatic tool changer moved to clause “Mapping Application”;
  6. New clause “Standardized methods for IO-Link” under clause “IOL_CALL”:
  7. Clause “Overview of mandatory and optional features” totally remodeled;
  8. New dummy Annexes for IO-Link Safety and IO-Link Wireless
  9. All “Coding of records” summarized in Annex D

 10. Update of GSDML template to show the user view



Version 1.1
Order No: 2.832
Language: English


Disclaimer / License:
License for supply of Specifications

Licensee acquires this license solely from PROFIBUS Nutzerorganisation e.V., having its principal place of business in Karlsruhe, Germany (hereinafter referred to as “Licensor”).

1. Specifications

1.1 Subject of this license agreement is each technical specification issued by the Licensor, in electronic form (hereinafter referred to as “SPECIFICATION”). Software is provided in object code only.

1.2 The SPECIFICATION distributed hereby has been developed by members of the Licensor. Licensor hereby notifies Licensee that the SPECIFICATION is not an industrial standard acknowledged by any standardization body or otherwise and may be further enhanced.

2. Rights and Duties of Licensee

2.1 Licensor hereby grants to Licensee the right to use the SPECIFICATION exclusively for developing and supporting products compliant with the SPECIFICATION. Licensee may copy the SPECIFICATION for this purpose and for data backup purposes.

2.2 Licensee shall not be entitled to modify, decompile, reverse engineer or extract any individual parts of the SPECIFICATION, unless this is permitted by mandatory copyright law. Furthermore, Licensee shall not be entitled to remove any alphanumeric identifiers, trademarks or copyright notices from the SPECIFICATION and, insofar as Licensee is entitled to make copies of the SPECIFICATION, Licensee shall copy them without alteration.

2.2 Licensee shall not be entitled to publish, market or distribute the SPECIFICATION. However, Licensee shall be entitled to transfer the right to use the SPECIFICATION granted to it to a third party, provided that Licensee concludes a written agreement with the third party in conformance with all of the conditions contained in this Section 2 and on the proviso that Licensee does not retain any copies of the SPECIFICATION.

3. Liability of Licensor

3.1 Licensor shall have no obligation to enhance the SPECIFICATION and shall assume no liability in case the SPECIFICATION or future versions thereof shall not be approved as an industrial standard.

3.2 The SPECIFICATION is delivered free of charge "as-is” to all members of the Licensor. Any liability and warranty for the SPECIFICATION - irrespective of the legal reason therefore - e.g. as to quality or title, its correctness, absence of defects, absence of claims of third party rights or in relation to its completeness and/or fitness for any specific purpose is excluded.
The Licensor is not liable for damages due to the use of the SPECIFICATION or for damages which have been caused by the design of hardware or software according to the information provided within the SPECIFICATION. Any liability for consequential, special or indirect damages including, but not limited to, loss of profit, loss of use and business interruption, regardless of the theory of law, are excluded.

3.3 The aforesaid exclusion of liability shall not apply as far as there is a legally binding liability, e.g. under product liability legislation, in cases of intent, of gross negligence, of injury of life, body or health or wilful hiding of a defect, or due to violation of major contractual obligations. However, liability for damages arising from the violation of major contractual obligations shall be limited to the foreseeable damage normally covered by a contract, unless in cases of intent or gross negligence. No change in the burden of proof to the detriment of Licensee is involved by the aforesaid provision.

4. Place of Jurisdiction and Applicable Law

4.1 The sole place of jurisdiction shall be the principal place of business of Licensor.

4.2 All relations arising out of the contract shall be governed by the substantive law of Germany, to the exclusion of the United Nations Convention on Contracts for the International Sale of Goods (CISG).

Please accept the Disclaimer / License Agreement before downloading.
# Date Filename Type Size
20/02/2020 zip 1 MB

PROFIBUS is a standardized, open, digital communications system for all areas of application in manufacturing and process automation.

PROFINET is the innovative open standard for Industrial Ethernet. It satisfies all requirements of automation technology..

IO-LINK is an independent sensor / actuator interface solution for use with PROFIBUS and PROFINET.