Siemens SINUMERIK 840D sl Operating Manual page 358

Programming technological functions (cycles)
10.1 Drilling
Rotary axis
XA plane
You program in XA to prevent the Y axis moving during machining.
To ensure that the holes point to the center of the "Cylinder", you must first position the Y axis
centrally above the "Cylinder".
Figure 10-1
Figure 10-2
XYA plane
You program in XYA if the Y axis should also move during machining. A value can be specified
for each position.
In addition to the possibilities of XA, the following is also possible, for example.
358
Holes pointing toward the center
Y axis is not centered above the cylinder
Operating Manual, 05/2017, A5E40868956
Milling