HEIDENHAIN ITNC 530 - CYCLE PROGRAMMING User Manual page 174

Cycle parameters
U Center in 1st axis Q216 (absolute): Center of the
pitch circle in the reference axis of the working plane.
Input range -99999.9999 to 99999.9999
U Center in 2nd axis Q217 (absolute): Center of the
pitch circle in the minor axis of the working plane.
Input range -99999.9999 to 99999.9999
U Pitch circle diameter Q244: Diameter of the pitch
circle. Input range 0 to 99999.9999
U Starting angle Q245 (absolute): Angle between the
reference axis of the working plane and the starting
point for the first machining operation on the pitch
circle. Input range -360.000 to 360.000
U Stopping angle Q246 (absolute): Angle between the
reference axis of the working plane and the starting
point for the last machining operation on the pitch
circle (does not apply to full circles). Do not enter the
same value for the stopping angle and starting angle.
If you enter the stopping angle greater than the
starting angle, machining will be carried out
counterclockwise; otherwise, machining will be
clockwise. Input range -360.000 to 360.000
U
Stepping angle Q247 (incremental): Angle between
two machining operations on a pitch circle. If you
enter an angle step of 0, the TNC will calculate the
angle step from the starting and stopping angles
and the number of pattern repetitions. If you enter
a value other than 0, the TNC will not take the
stopping angle into account. The sign for the angle
step determines the working direction (– =
clockwise). Input range -360.000 to 360.000
U Number of repetitions Q241: Number of machining
operations on a pitch circle. Input range 1 to 99999
174 Fixed Cycles: Pattern Definitions