HEIDENHAIN iTNC 530 (340 422) - Manual (Page 68)

68 2 Manual Operation and Setup
2.4 D
a
tu
m Set
ting (Without a 3-D T
o
uc
h Pr
obe)
Explanation of values saved in the preset table
„ Simple machine with three axes without tilting device
The TNC saves in the preset table the distance from the workpiece
datum to the reference point (including algebraic sign, see figure at
upper right)
„ Machine with swivel head
The TNC saves in the preset table the distance from the workpiece
datum to the reference point (including algebraic sign, see figure at
center right)
„ Machine with rotary table
The TNC saves in the preset table the distance from the workpiece
datum to the center of the rotary table (including algebraic sign, see
figure at lower right)
„ Machine with rotary table and swivel head
The TNC saves in the preset table the distance from the workpiece
datum to the center of the rotary table.
Keep in mind that moving an indexing feature on your
machine table (realized by changing the kinematic
description) requires you to redefine any workpiece-based
presets.