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IO-Link Profile



IO-Link Profile


IO-Link defines a fieldbus-independent communication interface for intelligent sensors and actuators in factory automation.




IO-Link BLOB Transfer & Firmware Update


 This document specifies the common additional protocol means for the transfer of Binary Large Objects (BLOB) and in particular the means for firmware-updates of Devices.


New Draft d1.1

This draft is published for testing and review only. It must not be used for development purposes.
Comments to be submitted to




You will find the profile specification and BLOB Transfer on the IO-Link web site:


IO-Link Profile Specification



Our well-known PI technologies


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 with all automation technologies.