Notes :
1.
2.
3.
4.
5.
6.
Tool position offset is cancelled by RESET
operation.
The tool offset must be cancelled before M02
or M30 is commanded.
The tool offset should be cancelled also before
Automatic Zero Return ( G 28) is commanded.
When the control is reset by M02 or M30 com-
mand or by executing RESET operation,
the tool offset number becomes O (or 00) .
When the Zero Return (auto or manual) is ex-
ecuted, the tool offset is cancelled automati–
tally.
The tool offset must be also cancelled before
zero Return Check ( G27) is commanded. If
the G27 is commanded at the state where the
tool offset is effective, the control will be
the state of Zero Return check error, because
the tool offset value is added to the program–
med position.
2.6.4
WORK COORDINATE SYSTEM SHIFT i
With this function, coordinate systems set by
the Work Coordinate System Setting function,
can be shifted through desired distances.
(1)
(2)
a.
b.
c.
d,
4
G50,
etc.
Shift values in the X and Z axes can be
written into the Work Coordinate System
Shift Memory (one group ) with which the
offset memory No. is
“ 00, ” by the same pro-
cedure as for writing tool offset values.
The written shift values become effective
from the moment described below,
When
When
When
G50 coordinate system is set
G50GT work coordinate system is set
automatic coordinate system is set
Position Absolute display is reset by ORG
key
That is, when these coordinate systems list-
ed above are set, the-shift values are simply
added.
Tools are not shifted.
-x
-v,
. .
p%
. .
ORIGINAL COORDINATE
~
z
20
Xoi2
—
+2
8
I AX,12
SHIFT ,
AXES
~+z
SHIFT COORDINATE AXES
Fig. 2.6
(3)
(4)
(5)
For positive shift values AX and AZ, the
coordinate axes are shifted in the direction
shown above. Xo and Zo are original coor-
dinate system setting values.
This shift function is executed at each time
any of the conditions described in a, b, c,
and d is met.
When the contents of Work Coordinate Sys-
tem Shift Memory are rewritten, the new
shift values become effective from the mo-
ment the operation a, b, c, or d above is
subsequently executed,
The procedure of
5.2.3, “
MEASURED
WORKPIECE VALUE DIRECT INPUT” is
effective for the Work Coordinate Shift
Memory with an offset memory No, “00. “
Notes :
1.
2.
3.
The shift command by the Work Coordinate
Shift function can not be cancelled unless
the setting value is changed to “O. “
NO
reset operation is effective in canceling it.
T~noO ;. . . . .
Tool position offset cancel
—
G50 T~UOJ; . . . Work coordinate system
setting
The tool offset No
00 in these instructions
has nothing to do with the contents of Work
Coordinate Shift Memory.
When G50 coordinate system is set or when
position absolute display is reset by ORG key
1, parameter #6018 D7 determines whether
work coordinate system shift amount is effec-
tive or not.
2,6.5
NEW COORDINATE SYSTEM SETTING
FUNCTION
2.6.5.1 Overview
A completely new approach to coordinate system
setting is employed in this function.
The following
are the features.
(a) A coordinate system is a machine coordinate
system.
(b) The tool nose point can always be displayed
on the current value display (absolute) .
(c) There is no need to set the coordinate system
in the program.
2.6.5,2
Functions
What kind of coordinate system setting is
performed and at what frequency ?
17
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