Siemens SINUMERIK 840DE Programming Manual page 126

Programming Motion Commands
4.6 Circular interpolation with center point and end point (G2/G3, I=, J=, K=AC...)
4.6 Circular interpolation with center point and end point (G2/G3, I=, J=,
K=AC...)
Function
Circular interpolation enables machining of full circles or arcs.
The circular movement is described by:
• The end point in Cartesian coordinates X, Y, Z and
• the circle center point at addresses I, J, K.
If the circle is programmed with a center point but no end point, the result is a full circle.
Programming
G2/G3 X... Y... Z... I... J... K...
Or
G2/G3 X... Y... Z... I=AC(...) J=AC(...) K=(AC...)
Parameters
G2
G3
X Y Z
I
J
K
=AC(...)
4-20
Circular interpolation clockwise
Circular interpolation counterclockwise
End point in Cartesian coordinates
Coordinates of the circle center point in the
Coordinates of the circle center point in the
Coordinates of the circle center point in the
Absolute dimensions (non-modal)
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
X direction
Y direction
Z direction
Fundamentals