Programming principles
1.3 Axis movements
Turning Part 2: Programming (Siemens instructions)
Programming and Operating Manual, 05/2012, 6FC5398-5DP10-0BA0
39
G2/G3 AR=... X... Y... ; Opening angle and end point
G2/G3 AP=... RP=... ; Polar coordinates, circle around the pole
Note
Further possibilities for circle programming result from:
CT - circle with tangential connection and
CIP - circle via intermediate point (see next sections).
Entering tolerances for the circle
Circles are only accepted by the control system with a certain dimensional tolerance. The
circle radius at the starting and end points are compared here. If the difference is within the
tolerance, the center point is exactly set internally. Otherwise, an alarm message is issued.
The tolerance value can be set via machine data.
Programming example: Definition of center point and end point
6WDUWSRLQW
&HQWHUSRLQW
(QGSRLQW
;
,
.
=
Figure 1-11 Example for center point and end point
N5 G90 Z30 X40 ; Starting point circle for N10
N10 G2 Z50 X40 K10 I-7 ; End point and center point
Note
Center point values refer to the circle starting point!
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