Siemens SINUMERIK 808D User Manual page 183

Se quence
In the cycle, the drilling positions are approached one after the other in the plane with G0.
Explanation of the parameters
C PA, CPO and RAD (center point position and radius)
The position of the circle of holes in the machining plane is defined via center point (parameters CPA and CPO) and radius
(parameter RAD). Only positive values are permitted for the radius.
STA1 and INDA (starting and incremental angle)
These parameters define the arrangement of the holes on the circle of holes.
The STA1 parameter defines the angle of rotation between the positive direction of the first axis (abscissa) in the workpiece
coordinate system active before the cycle was called and the first hole. The INDA parameter contains the angle of rotation
from one hole to the next.
If the INDA parameter is assigned the value zero, the indexing angle is calculated internally from the number of holes which
are positioned equally in a circle.
N U M (number)
The NUM parameter defines the number of holes.
Programming and Operating Manual (Milling)
183
6FC5398-4DP10-0BA6, 09/2017