Circular Interpolation; Circular Interpolation Types (G2/G3 - Siemens SINUMERIK 840D sl Programming Manual

9.6

Circular interpolation

9.6.1

Circular interpolation types (G2/G3, ...)

Possibilities of programming circular movements
The control provides a range of different ways to program circular movements. This allows
you to implement almost any type of drawing dimension directly. The circular movement is
described by the:
• Center point and end point in the absolute or incremental dimension (default)
• Radius and end point in Cartesian coordinates
• Opening angle and end point in Cartesian coordinates or center point under the addresses
• Polar coordinates with the polar angle AP= and the polar radius RP=
• Intermediate and end point
• End point and tangent direction at the start point.
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... ;
Fundamentals
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
Motion commands
9.6 Circular interpolation
Absolute center point and end point
with reference to the workpiece zero
Center point in incremental
dimensions with reference to the
circle starting point
Circle radius CR= and circle end
position 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 with the polar
angle AP= and the polar radius RP=
The intermediate point at addresses
I1=, J1=, K1=
Circle through starting and end point
and tangent direction at starting point
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