HEIDENHAIN TNC 620 User Manual page 171

Fixed Cycles: Pocket Milling / Stud Milling / Slot Milling | CIRCULAR SLOT (Cycle 254, DIN/ISO: G254,
software option 19)
Q338 Infeed for finishing? (incremental):
Infeed in the spindle axis per finishing cut.
Q338=0: Finishing in one infeed. Input range 0 to
99999.9999
Q200 Set-up clearance? (incremental): Distance
between tool tip and workpiece surface. Input
range 0 to 99999.9999
Q203 Workpiece surface coordinate? (absolute):
Coordinate of the workpiece surface. Input range
-99999.9999 to 99999.9999
Q204 2nd set-up clearance? (incremental):
Coordinate in the spindle axis at which no collision
between tool and workpiece (fixtures) can occur.
Input range 0 to 99999.9999
Q366 Plunging strategy (0/1/2)?: Type of plunging
strategy:
0: Vertical plunging. The plunging angle (ANGLE) in
the tool table is not evaluated.
1, 2: reciprocal plunging. In the tool table, the
plunging angle ANGLE for the active tool must be
defined as not equal to 0. Otherwise, the TNC
generates an error message
PREDEF: The TNC uses the value from the
GLOBAL DEF block
Q385 Finishing feed rate?: Traversing speed of
the tool in mm/min during side and floor finishing.
Input range 0 to 99999.999, alternatively FAUTO,
fu, FZ
Q439 Feed rate reference (0-3)?: Specify what
the programmed feed rate refers to:
0: Feed rate with respect to the tool center point
path
1: Feed rate with respect to the tool edge, but only
during side finishing, otherwise with respect to
the tool center point path
2: Feed rate refers to the tool cutting edge during
side finishing
refers to the tool path center
3: Feed rate always refers to the cutting edge
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017
and floor finishing; otherwise it
Q377=1 ;NR OF REPETITIONS
Q207=500 ;FEED RATE FOR MILLNG
Q351=+1 ;CLIMB OR UP-CUT
Q201=-20 ;DEPTH
Q202=5 ;PLUNGING DEPTH
Q369=0.1 ;ALLOWANCE FOR FLOOR
Q206=150 ;FEED RATE FOR PLNGNG
Q338=5 ;INFEED FOR FINISHING
Q200=2 ;SET-UP CLEARANCE
Q203=+0 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP CLEARANCE
Q366=1 ;PLUNGE
Q385=500 ;FINISHING FEED RATE
Q439=0 ;FEED RATE REFERENCE
9 L X+50 Y+50 R0 FMAX M3 M99
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