Solution
You have to adjust the Z coordinate define for the PICC/LISTENER/POLLER Antenna Position button of the Denso Robot Interface application.
Coordinates are listed within the DensoConfig.xml file located in
C:\Users\[user]\Documents\MPManager folder.
It is highly recommended to use a text editor application such as Notepad ++ in administrator mode
to modify the coordinates.
Here is a default coordinate for PICC/LISTENER/POLLER Antenna Position.
You have to adjust them to make sure you can grab and put back antenna on the holder.
<!-- PICC / Listener / Poller Test antenna position -->
<Picc_X>-295.0</Picc_X>
<Picc_Y>-215.0</Picc_Y>
<Picc_Z>14.0</Picc_Z>
<Picc_RX>-180.0</Picc_RX>
<Picc_RY>0.0</Picc_RY>
<Picc_RZ>-90.0</Picc_RZ>