Siemens SINUMERIK 802D sl Programming Manual page 30

Commands Calling Axis Movements
2.1 Interpolation commands
--100
(b) End point positioned inside the circumference
Fig. 2-5
2-30
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
θt
r
s
(a) Correcting an arc
100
G01 X100 Y0 F200;
G03 X--50 I--100;
--50 0
100
--100
Interpolation with end point of the specified arc
r = r + ( r
t s
Radius correction amount per unit angle
nr = ( r
s
r
e
r
t
θ
50
--100 --50 0
--50
(c) End point lying outside the circumference
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04.07
-- r ) / θ ¢ θ
s e t
-- r ) / θ
e
G01 X50. Y0;
G03 X 100 I--50;
--
50