|  | IO-Link Master PNIO Series GSDML Files
You can download the GSDML files provided for the IO-Link Master.
Installing the GSDML FileUse the appropriate procedure to install the GSD file for PROFINET IO.
![[Note]](images/note.gif) | | Note |
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Make sure that you install the appropriate GSDML files for your application base. The Home page of
the web interface displays the application base installed on your IO-Link Master |
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Unzip the GSDML-Vx.xx-Comtrol-IOLink-yyyymmdd.zip file to a working directory Open SIMATIC STEP 7 | HW Config. Select Menu Options | Install GSD Files to install the GSD file. If an older version of the GSD file was installed before, you may need to remove the IOLM object from an
existing project, and reinsert it after the new GSDML file is installed.
Unzip the GSDML-Vx.xx-Comtrol-IOLink-yyyymmdd.zip file to a working directory Open the TIA Portal and switch to the Project view. Use Menu Options | manage general station description files (GSD)
to install the GSD file. If an older version of the GSD file was installed before, you may need to remove the IOLM object from an
existing project, and reinsert it after the new GSDML file is installed.
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