Positional Data
3.2 Absolute/relative dimensions
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
3-3
Parameters
G90 Absolute reference dimension
X Y Z Axis identifiers of the axes to be
traversed
AC Absolute dimensions non-modally effective
Note
The command G90 is modal.
Generally G90 applies to all axes programmed in subsequent NC blocks.
Example of milling
The traverse paths are entered in absolute coordinates with reference to the workpiece zero.
For entering the circle center point coordinates I and J see circle interpolation G2/G3.
;
<
=
;
N10 G90 G0 X45 Y60 Z2 T1 S2000 M3 ;Absolute dimensioning, rapid traverse to
;XYZ, tool, spindle on
;clockwise
N20 G1 Z-5 F500 ;Tool infeed at feedrate
N30 G2 X20 Y35 I=AC(45) J=AC(35) ;Circle center point in absolute
dimensions
N40 G0 Z2 ;Retracting
N50 M30 ;End of block
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