HEIDENHAIN iTNC 530 (340 49x-03) Pilot - Manual (Page 6)

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Initiating a new part program
8 Select the directory in which the program is stored.
8 Enter the new program name and confirm your entry with
the ENT key.
8 To select the unit of measure, press the MM or INCH soft
key. The TNC switches the screen layout and initiates the
dialog for defining the BLK FORM (workpiece blank).
8 Enter the spindle axis.
8 Enter in sequence the X, Y and Z coordinates of the MIN
point.
8 Enter in sequence the X, Y and Z coordinates of the MAX
point.
1 BLK FORM 0.1 Z X+0 Y+0 Z-50
2 BLK FORM 0.2 X+100 Y+100 Z+0