HEIDENHAIN iTNC 530 (60642x-04) ISO programming - Manual (Page 102)

102 Programming: Fundamentals, File Management
3.2
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Define the blank: G30/G31
Immediately after initiating a new program, you define a cuboid
workpiece blank. If you wish to define the blank at a later stage, press
the SPEC FCT key and then the PROGRAM DEFAULTS and BLK
FORM soft keys. This definition is needed for the TNC’s graphic
simulation feature. The sides of the workpiece blank lie parallel to the
X, Y and Z axes and can be up to 100 000 mm long. The blank form is
defined by two of its corner points:
 MIN point G30: the smallest X, Y and Z coordinates of the blank
form, entered as absolute values
 MAX point G31: the largest X, Y and Z coordinates of the blank form,
entered as absolute or incremental values
You only need to define the workpiece blank if you wish
to run a graphic test for the program!