Functions; Figure 6 3-Wire Connection Technology (Based On Physics 2 Of The Io-Link Specification 1.0.0) - WAGO I/O System 750/753 Product Manual

750-1657

Functions

4 Functions
IO-Link defines a communication standard (per IEC 61131-9) for connecting both com-
mon digital outputs/outputs and intelligent IO-Link devices to the control level. IO-Link de-
vices describe sensors and actuators on the field level that have IO-Link functionality.
IO-Link technology is predominantly used in the industrial sector of manufacturing auto-
mation. With IO-Link, process data communication, as well as configuration, diagnostics
and maintenance, can be performed from the controller down to the lowest field level. For
example, sensor failures can be diagnosed and localized right in the controller.
Central parameter data storage in the IO-Link master and the option of pre-configuration
make it easy to swap out connected devices and copy configurations.
Communication occurs via serial peer-to-peer links in 3-wire connection technology. Both
data and diagnostic information and the power supply are transmitted over the serial IO-
Link interface simultaneously.
Figure 6: 3-Wire Connection Technology (Based on Physics 2 of the IO-Link Specification 1.0.0)
Configuration of IO-Link devices is based on standardized "IO Device Description" (IODD)
description files. These are provided by the device manufacturers and imported into the
specific configuration software. This allows IO-Link devices to be integrated in common
automation systems and network structures independent of the bus systems used.
The WAGO IO-Link Master complies with IO-Link Specification V.1.1.3. The "IO-Link"
trademark is managed there under the term "Single-Drop Digital Communication Interface
for Small Sensors and Actuators" (SDCI).
You can find further information at ü https://www.io-link.com.
Product manual | Version: 1.1.0 13
4-Port IO-Link Master