HEIDENHAIN TNC 620 User Manual page 78

3
Fixed Cycles: Drilling
3.6 UNIVERSAL DRILLING (Cycle 203, DIN/ISO: G203, software option
19)
Dwell time at depth Q211: Time in seconds that
the tool remains at the hole bottom. Input range 0 to
3600.0000
Feed rate for retraction Q208: Traversing speed of
the tool in mm/min when retracting from the hole.
If you enter Q208 = 0, the TNC retracts the tool at
the feed rate Q206. Input range 0 to 99999.999,
alternatively FMAX, FAUTO
Retraction rate for chip breaking Q256
(incremental): Value by which the TNC retracts
the tool during chip breaking. Input range 0.000 to
99999.999
Depth reference Q395: Select whether the entered
depth is referenced to the tool tip or the cylindrical
part of the tool. If the TNC is to reference the depth
to the cylindrical part of the tool, the point angle of
the tool must be defined in the T ANGLE column of
the tool table TOOL.T.
0
1
tool
78
= Depth referenced to the tool tip
= Depth referenced to the cylindrical part of the
TNC 620 | User's Manual Cycle Programming | 3/2014