Mitsubishi Electric MELFA FR CR800 Series User Manual page 529

21.5.2.2. Floor level
When [Floor level] is changed, the height of the floor that is displayed on the 3D monitor can be changed.
With "0" set as the origin, increasing the value changes the position of the floor in the + direction of the Z-axis,
and decreasing the value changes the position of the floor in the - direction of the Z-axis.
Figure 21-34 Changing the Floor Level
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