HEIDENHAIN TNC 407 (280 580) User Manual - Manual (Page 84)

4-25 TNC 425/TNC 415 B/TNC 407
4 Programming
Y
X
Z
MAX
MIN
4.6 Program Initiation
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.
The dialog for blank form definition starts automatically at every program
initiation. It can also be called with the BLK FORM soft key.
The ratio of the blank-form side lengths must be less than 200:1.
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.
Fig. 4.19: MIN and MAX points define the
blank form.