HEIDENHAIN iTNC 530 (340 49x-04) - Manual (Page 516)

516 8 Programming: Cycles
8.12 Coor
dinat
e
T
ransf
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mation Cy
cles
Application
Datum tables are used for
„ frequently recurring machining sequences at various locations on
the workpiece
„ frequent use of the same datum shift
Within a program, you can either program datum points directly in the
cycle definition or call them from a datum table.
 Datum shift: Enter the number of the datum from the
datum table or a Q parameter. If you enter a
Q parameter, the TNC activates the datum number
entered in the Q parameter.
Cancellation
„ Call a datum shift to the coordinates
X=0; Y=0 etc. from the datum table.
„ Execute a datum shift to the coordinates X=0, Y=0 etc. directly with
a cycle definition.
„ Use the TRANS DATUM RESET function (see “TRANS DATUM RESET”
on page 578).
Selecting a datum table in the part program
With the SEL TABLE function you select the table from which the TNC
takes the datums:
 Press the PGM CALL key to select the functions for
program call.
 Press the DATUM TABLE soft key.
 Enter the complete path name of the datum table and
confirm your entry with the END key.
Program a SEL TABLE block before Cycle 7 Datum Shift.
A datum table selected with SEL TABLE remains active
until you select another datum table with SEL TABLE or
through PGM MGT.
You can define datum tables and datum numbers in an NC
block with the TRANS DATUM TABLE function (see “TRANS
DATUM TABLE” on page 577).