Absolute / Incremental mode (ABS / INC)
Absolute mode displays the positions of all axes from a fixed datum. This is useful as it allows a defined datum for a
given job. The Incremental mode displays each position relative to the last position. This is also known as point to
point use. The red LED above the indicates the current selection of mode. The message window also shows the
current mode. LED ON = Incremental Mode
Note:
At the beginning of each working session, set the datum in Absolute Mode, and then switch the DRO to
Incremental Mode. By using the DRO in this way, you can return the machine to its absolute datum at
any time, simply by switching back to Absolute Mode.
.
.
ABS
Example: Switch from ABS to INC mode
.
.
INC
Inch / Metric Measurements
This function key toggles the displayed measurements between displaying in Inches or in millimetres (mm). This is
particularly helpful when working to older drawings that may have been produced before metrication. Equally many
drawings from the United States are in Imperial measurement units. All axes are effected by this operation.
.
.
ABS
Example: Switch from mm to Inch mode
.
.
ABS
As there are 25.400mm per Inch due to the limitations of any given display resolution some rounding of the
conversion may result.
Common Functions
This section goes through the functions that are common between the Lathe and Mill DRO
versions. Please read through this manual to ensure an understanding of these operations.
For example.
Lets machine a simple linear series of holes 20mm apart.
●
Set the absolute reference (ABS) to the end of a part to set our datum.
●
Now switch to INC mode
●
Zero the axis, Move 20mm and machine hole
●
Zero the axis, Move 20mm and machine hole
●
Zero the axis, Move 20mm and machine hole
The display in INC mode will show 20mm, the position of the last hole but if we toggle back to ABS mode the
display will show 60mm being the total distance moved relative to the datum we set. As such we can easily move
back to that datum or machine other features relative to it, such as PCD or curves etc.
0
0
20 / 0
20
40
20 / 0
60
20
ABS
INC
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Содержание EM250 Series
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