IO-Link basics
IO-Link is a communication system for connecting intelligent sensors and actuators to an automation system. The IEC 61131-9 standard specifies IO-Link under the designation "Single-drop digital communication interface for small sensors and actuators" (SDCI).
Both the electrical connection data and the communication protocol are standardized and summarized in the IO-Link Spec.
 | IO-Link specification The development of the Beckhoff IO-Link master ED/EJ/EL6224 was subject to the IO-Link specification 1.1. At the time this documentation was created, the IO-Link specification was incorporated into the IEC standardization and adopted as IEC 61131-9 in an extended form. The new designation SDCI is also being introduced at the same time. |