HEIDENHAIN TNC 310 (286 140) Pilot - Manual (Page 21)

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Path Functions
Circular Path Around the Circle Center CC
Coordinates of the circle center CC
Coordinates of the arc end point
Direction of rotation DR
C and CP enable you to program a complete circle in one block.
With Cartesian coordinates:
With polar coordinates:
5 CC X+25 Y+25
6 L X+45 Y+25 RR F200 M3
7 C X+45 Y+25 DR+
18 CC X+25 Y+25
19 LP PR+20 PA+0 RR F250 M3
20 CP PA+180 DR+
• Define the pole (CC) before programming polar coordinates.
• Program the pole only in Cartesian coordinates.
• The pole remains effective until you define a new one.
• The arc end point can be defined only with the polar
coordinate angle (PA).