HEIDENHAIN TNC 406 - Manual (Page 177)

156 8 Programming: Cycles
8.5 Coor
dinat
e
T
ransf
or
mation Cy
cles
DATUM SHIFT (Cycle 7)
Application
Machining operations can be repeated at various locations on the
workpiece with a datum shift.
Effect
When the DATUM shift cycle is defined, all coordinate data is based
on the new datum.
The datum shift is indicated in the status display with the index T by
the shifted axes.
Input
Enter the coordinates of the new datum (zero point) for up to 5 axes.
Absolute values are referenced to the zero point, which is determined
by the manual datum setting. Incremental values are referenced to the
datum which was last valid (this may be a datum which has already
been shifted).
If you are working with the datum table, enter the name of the datum
(with the # key) from the table and the name of the datum table from
which the TNC is to activate the datum shift. If you do not enter a
name, the TNC automatically uses the datum table 0.D. A selected
datum table remains active until you activate another table at a later
stage in the program.
The status display STATUS COORD. TRANSF. shows you the datum
table and the datum number that are currently active.
Cancellation
A datum shift is canceled by entering the datum shift coordinates 0, or
with the number #0.
If you combine coordinate transformations, note that the
datum shift must be programmed before other
transformations.
X
Y Z
Y
X
Z
Y
X
Z
X
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Y
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IY