HEIDENHAIN iTNC 530 (340 49x-01) - Manual (Page 65)

HEIDENHAIN iTNC 530 65
2.4 D
a
tu
m Set
ting (Without a 3-D T
o
uc
h Pr
obe)
There are several methods for saving datums and/or basic rotations in
the preset table:
„ Through probing cycles in the Manual or El. Handwheel modes (see
User’s Manual, Touch Probe Cycles, Chapter 2)
„ Through the probing cycles 400 to 402 and 410 to 419 in automatic
mode (see User’s Manual, Touch Probe Cycles, Chapter 3)
„ By adopting the current datum, which you set manually with the axis
keys
Manual entry of values in the preset table is allowed only
if there are no tilting devices on your machine. An
exception to this rule is the entry of basic rotations in the
ROT
column. The reason is that the TNC compensates the
geometry of the tilting device when it saves values in the
preset table.
Basic rotations from the preset table rotate the coordinate
system about the preset, which is shown in the same line
as the basic rotation.
When setting a datum, the TNC checks whether the
position of the tilting axes match the corresponding
values of the 3D ROT menu (depending on Machine
Parameter 7500 bit 5). Therefore:
„ If the “Tilt working plane” function is not active, the
position displays for the rotary axes must = 0° (zero the
rotary axes if necessary).
„ If the “Tilt working plane” function is active, the
position displays for the rotary axes must match the
angles entered in the 3D ROT menu.
The machine manufacturer can lock any lines in the preset
table in order to place fixed datums there (e.g. a center
point for a rotary table). Such lines in the preset table are
shown in a different color (default: red).
The line 0 in the preset table is write protected. In line 0,
the TNC always saved the datum that you most recently
set manually.