Siemens SINUMERIK 840D sl Operating Manual page 318

Programming technology functions (cycles)
8.1 Drilling
Parameter Description
Machining
Face C

surface
Face Y

(only for
Peripheral surface C

ShopTurn)
Peripheral surface Y

Position
At the front (face)

(only for
At the rear (face)

ShopTurn)
Outside (peripheral surface)

Inside (peripheral surface)

Selection options for the following positions - (only for face C/Y)
Position
center

(only for
off-center

ShopTurn)
Face C:
center/ Position circle center on the face surface
off-center Position circle off-center on the face surface
Z0 Z coordinate of the reference point (abs)
X0 X coordinate of the reference point (abs) – (only for off-center)
Y0 Y coordinate of the reference point (abs) – (only for off-center)
α0 Starting angle for first position referred to the X axis.
Positive angle: Circle is rotated counterclockwise.
Negative angle: Circle is rotated clockwise.
α1 Advance angle - (for pitch circle only)
R Radius
N Number of positions
Positioning
Straight line: Next position is approached linearly in rapid traverse.

(only for
Circular: Next position is approached along a circular path at the feedrate defined in

ShopTurn)
the machine data.
318
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Unit
mm
mm
mm
Degrees
Degrees
mm
Turning