HEIDENHAIN TNC 320 User Manual page 237

Please note while programming:
Enter the 2nd set-up clearance in Q204 such that no
collision with the workpiece or the fixtures can occur.
If the starting point in the 3rd axis Q227 and the end point
in the 3rd axis Q386 are entered as equal values, the TNC
does not run the cycle (depth = 0 has been programmed).
Cycle parameters
U
Machining strategy (0/1/2) Q389: Specify how the
TNC is to machine the surface:
0: Meander machining, stepover at positioning feed
rate outside the surface to be machined
1: Meander machining, stepover at feed rate for
milling within the surface to be machined
2: Line-by-line machining, retraction and stepover at
the positioning feed rate
U Starting point in 1st axis Q225 (absolute): Starting
point coordinate of the surface to be machined in the
reference axis of the working plane. Input range
-99999.9999 to 99999.9999
U Starting point in 2nd axis Q226 (absolute): Starting
point coordinate of the surface to be multipass-milled
in the minor axis of the working plane. Input range
-99999.9999 to 99999.9999
U Starting point in 3rd axis Q227 (absolute):
Coordinate of the workpiece surface used to calculate
the infeeds. Input range -99999.9999 to 99999.9999
U End point in 3rd axis Q386 (absolute): Coordinate in
the spindle axis to which the surface is to be face
milled. Input range -99999.9999 to 99999.9999
U 1st side length Q218 (incremental value): Length of
the surface to be machined in the reference axis of
the working plane. Use the algebraic sign to specify
the direction of the first milling path in reference to
the starting point in the 1st axis. Input range
-99999.9999 to 99999.9999
U 2nd side length Q219 (incremental value): Length of
the surface to be machined in the minor axis of the
working plane. Use the algebraic sign to specify the
direction of the first stepover in reference to the
starting point in the 2nd axis. Input range
-99999.9999 to 99999.9999
HEIDENHAIN TNC 320 237