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IO-Link Parameters – Manufacturer and service
Hans Turck GmbH & Co. KG | Witzlebenstraße 7, 45472 Mülheim/Ruhr, Germany | T +49 208 4952-0 | more@turck.com | www.turck.com
3 Software-Supported IO-Link-Parameterization
NOTE
Locking of the pushbutton guided menu
During the time the data processing device communicates via IO-Link, the pushbut-
ton-guided menu is locked; this means, the parameters can no longer be changed via
the pushbuttons. However, the process values can be accessed via the pushbuttons.
The ports of the IO-Link-master can be configured in the IO-Link-mode (IOL) or in the
standard-IO-mode.
If a port is configured in the SIO-Mode, the IO-Link-Master on this port behaves like a normal
digital input and 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 congured in the IOL-mode, the IO-Link-master tries to “wake” the connected IO-
Link-device via the“Wake-up Request”. If the master receives a response from the signal proces-
sor, both devices start to communicate with each other. First, the communication parameters
are exchanged; then the cyclic data exchange of the process data (objects) starts.
In case of active IO-Link-communication (IOL-mode), both cyclic and acyclic communication
services are available.
Parameterization via IO-Link can occur in different ways:
■
via on-request data objects (e. g., IO-Link-function block close to the control),
■
via tool-based engineering via 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 acyclical manner and upon the request of the IO-Link-
Master. The IO-Link-Master always sends a request to the device first, then the device responds.
This is the case when the data is written into the device and read from the device. With the help
of the 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).
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