Siemens SINUMERIK 828D Programming Manual page 131

Example 3: Drill cross holes in turned part
Cross holes are to be drilled in this turned part. The running drive spindle (master spindle) is
stopped at zero degrees and then successively turned through 90°, stopped and so on.
Program code
....
N110 S2=1000 M2=3
N120 SPOSA=DC(0)
N125 G0 X34 Z-35
N130 WAITS
N135 G1 G94 X10 F250
N140G0 X34
N145 SPOS=IC(90)
N150 G1 X10
N155 G0 X34
N160 SPOS=AC(180)
N165 G1 X10
N170 G0 X34
N175 SPOS=IC(90)
N180 G1 X10
N185 G0 X50
...
Fundamentals
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
7.4 Positioning spindles (SPOS, SPOSA, M19, M70, WAITS)
Comment
; Switch on cross drilling attachment.
; Set main spindle to 0° immediately, the program will
advance to the next block straight away.
; Switch on the drill while the spindle is taking up
position.
; Wait for the main spindle to reach its position.
; Feedrate in mm/min (G96 is suitable only for the
multi-edge turning tool and synchronous spindle, but
not for power tools on the cross slide.)
; The spindle is positioned through 90° with read halt
in a positive direction.
; The spindle is positioned at 180° relative to the
spindle zero point.
; The spindle turns in a positive direction through 90°
from the absolute 180° position, ending up in the
absolute 270° position.
Feed control
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