Description
User manual 55530_hdb_en_16 21 / 156
3.3 IO-Link
IO-Link is a standardized link that enables connection of intelligent devices of
the sensor and actuator level to an automation system.
Communication takes place between a master and a device. A module has
one or more IO-Link masterports. One device can be connected per port,
which means that the IO-Link is a point-to-point communication system and
not a fieldbus.
The IO-Link master module builds the interface between the higher fieldbus
level and the IO-Link system.
The IO-Link device converts the data of the sensors/actuators into the IO-Link
format and passes the data on to the master. The device can be implemented
either directly into the sensor/actuator or as separate device.
Fig. 3-7: IO-Link
For further information, refer to chap. 8.3 "IO-Link communication"
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