What is IO-Link?

IO-Link is a serial, digital communication protocol for use in automation technology. It is used to connect sensors or actuators to an automation system. With IO-Link, the “last meter” of communication with sensors and actuators is digitized. IO-Link is standardized in IEC 61131-9. Where previously only binary switching states (on/off) or analog signals were transferred, now status information can also be read by the sensor or actuator and configuration data transferred to the sensor and actuator.
IO-Link is not another bus system, but rather a point-to-point connection between the IO-Link device and a connection unit, the IO-Link master.

Example of a system architecture with IO-Link Example of a system architecture with IO-Link

IO-Link Device Descriptions (IODD)

Information on system description

  1. Advantages of IO-Link
  2. System overview
  3. Integration in the automation system
  4. Glossary

Information about the planning directive

  1. Introduction
  2. Definition of the example system

Information on Dual Channel

  1. The second channel / Dual Channel

1. Advantages of IO-Link

2. System overview

3. Integration in the automation system

4. Glossary