HEIDENHAIN TNC 360 User Manual - Manual (Page 80)

4-15 TNC 360
4 Programming
Fig. 4.10: The MIN and MAX points define
the blank form
PGM
NR
or
ENT
ENT e.g.
7 4
NO
ENT
3 2
Y
X
Z
MAX
MIN
4.4 Program Creation
To create a new part program:
Call the file directory.
Select any program.
PROGRAM NUMBER =
Enter the number of the new program, for example 7432.
MM = ENT / INCH = NO ENT
Indicate whether the dimensions will be entered in millimeter or in
inches.
Two program blocks then appear in the TNC screen.
0 BEGIN PGM 7432 MM
Block 0: Program beginning, name, unit of measure.
1 END PGM 7432 MM
Block 1: Program end, name, unit of measure.
The TNC generates the block numbers and the
BEGIN and END blocks automatically. The unit of
measure used in the program appears behind the
program name.
Defining the blank form – BLK FORM
If you wish to use the TNC's graphic workpiece simulation you must first
define a rectangular workpiece blank. Its sides lie parallel to the X, Y and Z
axes and can be up to 30 000 mm long.
To start the dialog for blank form definition, press the BLK FORM key.
MIN and MAX points
The blank form is defined by two of its corner points:
• The MIN point — the smallest X, Y and Z coordinates of the blank form,
entered as absolute values.
• The MAX point — the largest X, Y and Z coordinates of the blank form,
entered as absolute or incremental values.
The ratio of the blank-form side lengths must be less than 84:1.