SW4000 USER’S MANUAL
VER5.13 15
2.9
Search the Absolute Reference Point of Scale (RI)
Function: An absolute datum should be set when a work-piece is machined. There are two cases:
When the machine table is going in high speed, the machine
table can’t stop immediately but continue going further because
of inertia when power is off suddenly. There will be distance
∆
L
between the actual position and the position in the DRO
memorize. That is to say the display value is not the actual value
of the position when power is on again.
If the machine table is moved without intention when DRO is
off.
How to restore the preset ABS and correct display value?
These questions can be solved easily with this function of search RI.
STEPS:
1. DRO is set in ABS coordinate.
2. Press
RI
, then the message window displays “SEL AXIS”;
3. Select the axis which need search RI. For instance: select Y axis, then
press
Y
. “FD.Y REF” is displayed in message window, and Y
window flashes.
4. Move the machine table. The buzzer sounds when RI is searched, then
Y window stops flashing and displays the value of the current
position, the DRO returns normal display state.
In the course of searching, press
AC
to quit this operation.
The machine table is moved when DRO is off. How to restore the former absolute ABS coordinate
and correct display value?
Take SW4000-2 as an example.
STEPS:
1
）
This operation (searching the absolute origin point of the
scale) is necessary when a linear scale is installed or the
default parameter is loaded. Or the ABS coordinate would
not be restored.
2
）
Set the point O as the datum of ABS. (Move the machine
Y
0
X
0
A
X
Y
0
X
Y
