Siemens SINUMERIK 840D Operating Manual page 287

Procedure
Parameter Description
LAB Repeat jump label for position
(only for G code)
PL Machining plane
Circular pattern Selection option for the following patterns:
Pitch circle

(only for G code)
Full circle

Z0 (only for Z coordinate of the reference point Z
ShopMill)
X0 X coordinate of the reference point X (abs)
Y0 Y coordinate of the reference point Y (abs)
α0 Starting angle for first position.
Positive angle: Full circle is rotated counterclockwise.
Negative angle: Full circle is rotated in clockwise direction.
α1 Advance angle - (for pitch circle pattern only)
After the first hole has been drilled, all further positions are advanced by this angle.
Positive angle: Further positions are rotated counterclockwise.
Negative angle: Further positions are rotated clockwise.
R Radius
N Number of positions
Positioning Positioning motion between the positions
Straight line

Next position is approached linearly at rapid traverse.
Circle

Next position is approached at the programmed feedrate (FP) along a circular path.
Milling
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
1. The part program or ShopMill program to be processed has been
created and you are in the editor.
2. Press the "Drilling" softkey.
3. Press the "Positions" and "Circle" softkeys.
The "Position circle" input window opens.
Programming technological functions (cycles)
8.1 Drilling
Unit
mm
mm
mm
Degrees
Degrees
mm
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