V01.0114 | 2019/11
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Software-Supported IO-Link parameterization
The ports of the IO-Link master can be configured in IO-Link mode (IOL) or in the standard-IO
mode (SIO).
If a port is configured in SIO mode, the IO-Link master on this port behaves like a normal digital
input. The connected IO-Link device sends the standard switching output to the IO-Link master
– there is no communication between the device and the master.
If the port is configured in IOL mode, the IO-Link master tries to "wake" the connected IO-Link
device using the "wake-up request." If the master receives a response from the signal processor,
both devices start to communicate with each other. First the communication parameters are
exchanged, and then the cyclic data exchange of process data (objects) starts.
In the case of active IO-Link communication (IOL mode), both cyclic and acyclic communication
services are available.
Parameterization via IO-Link can occur in two different ways:
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via on-request data objects (e.g. IO-Link function block close to the control)
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via tool-based engineering using FDT/DTM (e.g. PACTware™ with the use of DTM or the
IODD)
Device parameters (on-request data objects)
Device parameters are exchanged in an acyclic manner and upon the request of the IO-Link
master. The IO-Link master always sends a request to the device first, and then the device re-
sponds. This is the case when the data is both written into the device and read from the device.
With the help of on-request data objects (ORDO), the parameters can be written into the device
(write) or the device status can be read from the device (read).
IO-Link configuration in PROFINET
Using SIDI (Simple IO-Link Device Integration), IO-Link devices can be configured in PROFINET
applications directly in the programming environment (e.g. TIA Portal). The Turck IO-Link
devices are integrated in the GSDML file of the IO-Link masters in the TBEN, TBPN and FEN20
product series and can be configured in the programming environment as submodules of a
modular I/O system. During this process, the user has access to all device properties and
parameters.