Siemens SINUMERIK 840D Operating Manual page 386

Programming technological functions (cycles)
8.5 Contour turning - only for G code programs
Parameters
Chamfer
CA
Additional commands
Contour element "Straight line e.g. ZX"
Parameters
Z
X
α1
α2
Transition to next
element
Radius
Chamfer
CA
Additional commands
Contour element "Circle"
Parameters
Direction of rotation
Z
X
K
I
α1
386
Description
Thread Z1 Length Z1
Z2 Length Z2
R1 Radius R1
R2 Radius R2
T Insertion depth
FS Transition to following element - chamfer
Grinding allowance
Grinding allowance to right of contour

Grinding allowance to left of contour

Additional G code commands
Description
End point Z (abs or inc)
End point X ∅ (abs) or end point X (inc)
Starting angle to Z axis
Angle to the preceding element
Type of transition
Radius

Chamfer

R Transition to following element - radius
FS Transition to following element - chamfer
Grinding allowance
Grinding allowance to right of contour

Grinding allowance to left of contour

Additional G code commands
Description
Clockwise direction of rotation

Counterclockwise direction of rotation

End point Z (abs or inc)
End point X ∅ (abs) or end point X (inc)
Circle center point K (abs or inc)
Circle center point I ∅ (abs or circle center point I (inc)
Starting angle to Z axis
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
Unit
mm
mm
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mm
mm
mm
Unit
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mm
Degrees
Degrees
mm
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mm
Unit
mm
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Degrees
Milling