ACU-RITE DRO 200E - Manual (Page 11)

READOUT OPERATIONS
DRO 200E
7
Setting Absolute Zero (Datum) with a Tool
1. Touch the tool to the edge of the workpiece.
2. Make sure that the absolute indicator (ABS) is lit.
Press the A key if it is not.
3. Press the z key for the appropriate axis.
The readout will display these indicators: ABS ZERO SET
4. Enter the position of the tool center and press E .
.25 Inch
Tool
-.125
Setting Absolute Zero (Datum) Using Center Line
You can set absolute zero (datum) at the center of your workpiece or in the center of
a hole. To set absolute zero using centerline:
1. Verify the readout is in ABS mode. The ABS indicator will be displayed.
If not press the
A
key to select the absolute mode.
2. Press the z key for the appropriate axis.
3. Press the L key. A message will ask you to
“ENTER FIRST EDGE”. Move to the first edge.
4. Press the E key.
Note: The closer you are to the
center of the feature the
more accurate your cen-
terline calculation will be.
5. A message will ask you to “ENTER
SECOND EDGE”. Move to the sec-
ond edge.
6. Press E key.
Absolute zero (datum) is now set at
the center between the two points.
The display will change showing
you the distance to center line on
that axis.
Repeat this procedure to set absolute zero center line in the other axis.
First
Point
First
Point
Second
Point
Second
Point
Absolute zero is now set in the center on both X and Y-axes.