# Circle Position Pattern (holes2) - Siemens SINUMERIK 840D Operating Manual

Programming technological functions (cycles)
8.1 Drilling
Parameter
Description
LAB
Repeat jump label for position
(only for G code)
PL
Machining plane
(only for G code)
Position pattern
Selection option for the following patterns:
Line
(only for G code)
Grid
Frame
Z0 (only for
Z coordinate of the reference point Z
ShopMill)
X0
X coordinate of the reference point X (abs)
This position must be programmed absolutely in the 1st call.
Y0
Y coordinate of the reference point Y (abs)
This position must be programmed absolutely in the 1st call.
α0
Angle of rotation of the line referred to the X axis
Positive angle: Line is rotated counterclockwise.
Negative angle: Line is rotated clockwise.
L0
Distance of 1st position to reference point - (for line position pattern only)
L
Distance between positions - (for line position pattern only)
N
Number of positions - (for line position pattern only)
αX
Shear angle X - (for grid or frame position pattern only)
αY
Shear angle Y - (for grid or frame position pattern only)
L1
Distance between columns - (for grid or frame position pattern only)
L2
Distance between lines - (for grid or frame position pattern only)
N1
Number of columns - (for grid or frame position pattern only)
N2
Number of lines - (for grid or frame position pattern only)
8.1.12

## Circle position pattern (HOLES2)

Function
You can program holes on a full circle or pitch circle with defined radius with the "Circle
position pattern" cycle. The basic angle of rotation (α0) for the 1st position is relative to the X
axis. The control calculates the angle of the next hole position as a function of the total
number of holes. The angle it calculates is identical for all positions.
The tool can approach the next position along a linear or circular path.
286
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
Unit
mm
mm
mm
Degrees
mm
mm
Degrees
Degrees
mm
mm
Milling

Sinumerik828d