232 Programming: Programming Contours
6.5 Path Contours—Polar Coordinates
Circular path CP around pole CC
The polar coordinate radius PR is also the radius of the arc. PR is defined
by the distance from the starting point to the pole CC. The last
programmed tool position will be the starting point of the arc.
U Polar-coordinates angle PA: Angular position of the
arc end point between –99 999.9999° and
+99 999.9999°
U Direction of rotation DR
Example NC blocks
18 CC X+25 Y+25
19 LP PR+20 PA+0 RR F250 M3
20 CP PA+180 DR+
For incremental coordinates, enter the same sign for DR
and PA.
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