Siemens Sinumerik 840D sl Programming Manual page 92

Additional functions
4.1 Program supporting functions
Figure 4-11
Explanations
Point R is approached in rapid traverse after positioning the X and Y axes. Drilling takes
place from point R to point Z. The tool returns in rapid traverse mode after the spindle is
stopped at the bottom of a hole.
Restrictions
Changeover of the axes
Before changing over the drilling axis, one must first deselect the fixed cycle.
Drilling
The drilling cycle is executed only if an axis motion, e.g. is programmed with X, Y, Z or R.
R
Always program R only in one block with an axis motion, otherwise the programmed values
are not stored modally.
Deselection
The G functions of Group 01 (G00 to G03) and G86 should not be used together in one
block, as otherwise G86 is deselected.
92
Boring cycle (G86)
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
ISO Milling