ACU-RITE DRO 200E - Manual (Page 8)

INTRODUCTION
DRO 200E
4
Power-On Position Recovery
Position-Trac™
Current ACU-RITE precision glass scales, including the ENC 150, contain distance-
encrypted reference marks allowing you to quickly recall absolute zero (datum) after
a power interruption. When power is restored, the readout will scroll a message indi-
cating power has been lost, and will prompt you to move each axis until a reference
mark is located. After this message, a flashing decimal point will indicate that
absolute zero has not been recalled for each axis. To recall zero, move each axis
in a positive count direction. By traversing approximately 2 inches on each axis, you
will re-establish and display current position relative to your last set zero.
If you use a scale without Position-Trac™ distance-encrypted reference marks, the
procedure for recovering your position is slightly different. You must find a specific
reference mark and then use the same mark when recalling zero. To setup your dis-
play for non-Position-Trac™ scales, refer to page 21, “Machine Related Parameters”.
To recall Zero using non-Position-Trac™ scales:
1. Move near the desired reference mark.
2. Press and hold the A key until the decimal point starts to flash.
3. Move slowly past the reference mark until the readout recalls its position.
You must move in the positive count direction.
Machine Conventions
For the purposes of this manual, all of the examples are based on the following
conventions.
As you face the machine:
• The tool moving right is X-axis positive
• The tool moving away from you is Y-axis
positive
• The tool moving up is Z-axis positive
+Z
+Y
–Y
–Z
+X
–X
X=0
Y=0
Z=0