Siemens Sinumerik 840D sl Programming Manual page 179

Syntax
G2/G3 X... Y... Z...
I=AC(...) J=AC(...) K=AC(...) ;
G2/G3 X... Y... Z... I... J... K... ;
G2/G3 X... Y... Z... CR=... ;
G2/G3 X... Y... Z... AR=... ;
G2/G3 I... J... K... AR=... ;
G2/G3 AP=... RP=... ;
CIP X... Y... Z... I1=AC(...) J1=AC(...) K1=AC(...) ;
CT X... Y... Z... ;
Meaning
G2:
G3:
CIP:
CT:
X... Y... Z... :
I... J... K... :
CR=... :
AR=... :
AP=...:
RP=...:
I1=... J1=... K1=... :
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Absolute center point and end
point with reference to the work‐
piece zero
Center point in incremental dimen‐
sions with reference to the circle
starting point
Circle radius CR= ..., end point in
Cartesian coordinates X..., Y..., Z...
Opening angle AR=..., end point in
Cartesian coordinates X..., Y..., Z...
Opening angle AR=..., center point
at addresses I..., J..., K...
Polar coordinates: Polar angle
AP=..., polar radius RP=...
The intermediate point at address‐
es I1=, J1=, K1=
Circle through starting and end
point and tangent direction at start‐
ing point
Circular interpolation clockwise
Circular interpolation counter-clockwise
Circular interpolation through intermediate point
Circle with tangential transition defines the circle
End point in Cartesian coordinates
Circle center point in Cartesian coordinates in X, Y, Z direc‐
tion
Circle radius
Opening angle
End point in polar coordinates, in this case polar angle
End point in polar coordinates, in this case polar radius cor‐
responding to circle radius
Intermediate points in Cartesian coordinates in X, Y, Z direc‐
tion
Motion commands
10.6 Circular interpolation
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