Siemens SINUMERIK 840D sl Programming Manual page 105

Examples for geometry axis exchange with assignments of the reference axis:
Program code
N05 G95 F0.1
N10 GEOAX(1, X1)
N20 SCC[X]
N30 GEOAX(1, X2)
N40 G96 M3 S20
Program code
N05 G95 F0.1
N10 GEOAX(1, X1)
N20 SCC[X1]
N30 GEOAX(1, X2)
N40 G96 M3 S20
Program code
N05 G95 F0.1
N10 GEOAX(1, X2)
N20 SCC[X1]
Program code
N05 G0 Z50
N10 X35 Y30
N15 SCC[X]
N20 G96 M3 S20
N25 G1 F1.5 X20
N30 G0 Z51
N35 SCC[Y]
N40 G1 F1.2 Y25
References:
Function Manual, Basic Functions; Transverse Axes (P1) and Feedrates (V1)
Fundamentals
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
6.3 Constant cutting rate (G96/G961/G962, G97/G971/G972, G973, LIMS, SCC)
Comment
; Channel axis X1 becomes first geometry axis.
; First geometry axis (X) becomes reference axis for G96/G961/
G962.
; Channel axis X2 becomes first geometry axis.
; Reference axis for G96 is channel axis X2.
Comment
; Channel axis X1 becomes first geometry axis.
; X1 and implicitly the first geometry axis (X) becomes the
reference axis for G96/G961/G962.
; Channel axis X2 becomes first geometry axis.
; Reference axis for G96 is X2 or X, no alarm.
Comment
; Channel axis X2 becomes first geometry axis.
; X1 is not a geometry axis, alarm.
Comment
; Reference axis for G96/G961/G962 is X.
; Constant cutting rate ON at 10 mm/min.
; Face cutting in X at 1.5 mm/revolution.
; Reference axis for G96 is Y, reduction in spindle speed
(Y30).
; Face cutting in Y at 1.2 mm/revolution.
Spindle motion
105