HEIDENHAIN TNC 640 (34059x-02) Cycle programming - Manual (Page 152)

Fixed Cycles: Pocket Milling / Stud Milling / Slot Milling
5.5 CIRCULAR SLOT (Cycle 254, DIN/ISO: G254)
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TNC 640 | User's Manual Cycle Programming | 5/2013
Stepping angle Q378 (incremental): Angle by which
the entire slot is rotated. The center of rotation is at
the center of the pitch circle. Input range -360.000
to 360.000
Number of repetitions Q377: Number of machining
operations on a pitch circle. Input range 1 to 99999
Feed rate for milling Q207: Traversing speed of
the tool in mm/min while milling. Input range 0 to
99999.999 alternatively
FAUTO, FU, FZ