Mitsubishi Electric MELDAS 600M Series Instruction Manual page 405

(2) Grid point type
After moving to the marked point manually, the machine will move and stop at the first grid point.
The zero point is initialized at the grid point, which is used as the absolute position basic point.
The following parameters on the Zero point set screen must be set before carrying out zero point
initialization.
Set "270005 No stopper" to "1" (marked point alignment method).
Set "270008 Ref position type" to "1" (set grid point as absolute position basic point).
1. Select the Zero point set screen.
2. Press the Abs posn set key. (Note 1)
3. Confirm the parameters for the axis for which zero point
initialization is to be carried out.
"270005 No stopper" = 1
"270008 Ref position type" = 1 (Note 2)
4. Change to the manual mode, and move to the marked point.
5. Set "1" for "1 Ref position set" of the axis for which zero point
initialization is to be carried out. (Note 3)
6. The distance from the machine basic position to the previous
grid will appear at "Machine End".
7. Return in the direction opposite to the final entry direction
with manual movement. (Note 4)
8. When reached to the first grid point, the machine will
automatically stop, and the absolute position basic point will
be saved. (Note 5)
9. Set the distance from the 1st reference point to the marked
point in "270002 Ref position offset". (Note 6)
"270002 Ref position offset"
10. After the zero point has been initialized for all axes, turn the
power ON again.
11. After all axes have been returned to the zero point, output the
parameters. (Note 7)
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4. Absolute Position Detection
Operation procedure
= 1st reference point – absolute position basic point.
"150008 #1_rfp"
-
Basic machine
1st
coordinate system
reference point
zero point (G53 zero point)
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CHAPTER 3 MAINTENANCE
1. 2. 3. 4.
7.
"270002 Reference
position offset"
6. "Machine end"
Grid point
Absolute position
basic point
III – 19
"Status" display on Zero point set
screen
"0" will appear at "Status" for the axis for
which the zero point has not been
initialized.
When the axis movement stops and "1" is
set for "1 Ref point set", "2" will appear at
the "Status" for that axis.
When the machine stops at the grid point
and writing to the SRAM is completed, "∗"
will appear at "Status".
5.
7.
+
Reference
mark point