HEIDENHAIN iTNC 530 (340 49x-01) ISO programming - Manual (Page 126)

126 4 Fundamentals of NC, File Management, Programming Aids, Pallet Management
4.12 P
a
llet Manag
e
ment
4.12 Pallet Management
Function
Pallet tables are used for machining centers with pallet changers: The
pallet table calls the part programs that are required for the different
pallets, and activates datum shifts or datum tables.
You can also use pallet tables to run in succession several programs
that have different datums.
Pallet tables contain the following information:
„ PAL/PGM (entry obligatory):
Identification for pallet or NC program (select with ENT or NO ENT)
„ NAME (entry obligatory):
Pallet or program name. The machine tool builder determines the
pallet name (see Machine Manual). The program name must be
stored in the same directory as the pallet table. Otherwise you must
enter the full path name for the program.
„ PRESET (entry optional):
Preset number from the preset table. The preset number defined
here is interpreted by the TNC either as a pallet datum PAL in the
PAL/PGM
) column or as a workpiece datum (PGM entry in the PAL/PGM)
line.
„ DATUM (entry optional):
Name of the datum table. The datum table must be stored in the
same directory as the pallet table. Otherwise you must enter the full
path name for the datum table. Datums from the datum table can be
activated in the NC program with Cycle G53 DATUM SHIFT.
„ X, Y, Z (entry optional, other axes also possible):
For pallet names, the programmed coordinates are referenced to
the machine datum. For NC programs, the programmed coordinates
are referenced to the pallet datum. These entries overwrite the
datum that you last set in the Manual mode of operation. With the
miscellaneous function M104 you can reactivate the datum that was
last set. With the actual-position-capture key, the TNC opens a
window that enables you to have the TNC enter various points as
datums (see table below):
Pallet table management is a machine-dependent
function. The standard functional range will be described
below. Refer to your machine manual for more
information.
Position Meaning
Actual values Enter the coordinates of the current tool position
referenced to the active coordinate system.
Reference
values Enter the coordinates of the current tool position
referenced to the machine datum.
Measured
values ACTL Enter the coordinates referenced to the active
coordinate system of the datum last probed in
the Manual operating mode.