5238-E P-248
SECTION 9 CONTOUR GENERATION
The circular interpolation direction, tool nose radius compensation direction, and other factors
are determined based on the selected plane.
2-2. Programming Format
2-3. Cautions
• An alarm occurs if the X coordinate value of the start and end points are different. This is
because the coordinate plane will be changed if the X coordinate values are different.
• For circular interpolation between two points A and B on the side face, there are two possible
paths which have the same radius. In this case, the arc whose center angle is less than 180° is
selected.
In Fig. 5 below, the arc "a" is generated.
LE33013R0301100070001
Circular interpolation (CW) on side
face
: G132 Z C L F
Z, C : Coordinates of end point for circular
interpolation (CW) on contour generation side
face
L : Radius of arc on side face
F : Cutting feedrate (mm/min)
Circular interpolation (CCW) on side
face
: G133 Z C L F
Z, C : Coordinates of end point for circular
interpolation (CCW) on contour generation
side face
L : Radius of arc on side face
F : Cutting feedrate (mm/min)
(C360) C0
(C0) C360
B
a
L
A
L
b
Fig. 5
The values in parentheses are for the inner plane.
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