Siemens SINUMERIK 840DE - Page 123

Programming Motion Commands
4.5 Circular interpolation types, (G2/G3, CIP, CT)
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
4-17
Programming
G2/G3 X… Y… Z…
I=AC(…) J=AC(…) K=AC(…)
Absolute center point and end point with reference to the
workpiece zero
Or
G2/G3 X… Y… Z… I… J… K…
Center point in incremental dimensions with reference to the
circle starting point
Or
G2/G3 X… Y… Z… CR=…
Circle radius CR= and circle end position in Cartesian
coordinates X..., Y..., Z...
Or
G2/G3 X… Y… Z… AR=…
Aperture angle AR= end point in Cartesian coordinates X...,
Y..., Z...
Or
G2/G3 I… J… K… AR=…
Aperture angle AR= center point at addresses I..., J..., K...
Or
G2/G3 AP=… RP=…
Polar coordinates with the polar angle AP= and the polar
radius RP=
Or
CIP X… Y… Z… I1=AC(…)
J1=AC(…) K1=(AC…)
The intermediate point at addresses I1=, J1=, K1=
Or
CT X… Y… Z…
Circle through starting and end point and tangent direction at
starting point
Parameters
G2 Circular interpolation clockwise
G3 Circular interpolation counterclockwise
CIP Circular interpolation through intermediate point
CT Circle with tangential transition defines the circle
X Y Z End point in Cartesian coordinates
I J K Circle center point in Cartesian coordinates in X, Y, Z
direction
CR= Circle radius
AR= Aperture angle
AP= End point in polar coordinates, in this case the polar
angle
RP= End point in polar coordinates, in this case polar radius
corresponding to circle radius
I1= J1= K1= Intermediate points in Cartesian coordinates in X, Y, Z
direction