Mitsubishi Electric MELDAS 600M Series Instruction Manual page 407

4.6 Various settings for dogless-type absolute position detection
(1) Resetting the basic machine coordinate system and setting the reference point
(G28 zero point)
The basic machine coordinate system can be reset after the zero point initialization by changing
the "270002 Ref position offset" parameter.
1. Select the Zero point set screen.
2. Press the Abs posn set menu key.
3. Designate the axis for which the basic machine coordinate
system is to be reset, and set "1" for the "1 Ref position set"
of that axis.
4. Reset the distance from the 1st reference point to the basic
machine position in "270002 Ref position offset".
5. After the zero point has been initialized for all axes, turn the
power ON again.
6. After all the axes have been returned to the zero point, output
the parameters.
<When "270008 Ref point type" = 0>
New basic machine
coordinate system
zero point (G53 zero point)
<When "270008 Ref point type" = 1>
New basic machine
coordinate system
zero point (G53 zero point)
(Note 1) Make sure that the basic machine coordinate system zero point (G53 zero point) and
Downloaded from ManualsNet.com
Operation procedure
"#1_rfp"
-
New 1st
reference point
Old basic machine
coordinate system
zero point (G53 zero point)
New "270002 Ref position offset"
"#1_rfp"
-
New 1st
reference point
Old basic machine
coordinate system
zero point (G53 zero point)
reference return point (G28 zero point) are not outside of the machine end stopper.
search engine
CHAPTER 3 MAINTENANCE
4. Absolute Position Detection
New "270002 Ref position offset"
Old "270002 Ref position offset"
"#1_rfp"
Old 1st reference point
Old "270002 Ref
position offset"
"#1_rfp"
Old 1st reference point
III – 21
"Status" display on Zero point set
screen
"0" will appear at "Status" for the axis for
which the zero point has not been
initialized.
Absolute position Machine end
or marked point
basic point
Absolute position
Machine end
basic point
or marked point
+
+