HEIDENHAIN TNC 360 User Manual - Manual (Page 184)

8-31 TNC 360
8 Cycles
Fig. 8.36: Activation of the datum shift
Fig. 8.37: Datum shift, absolute Fig. 8.38: Datum shift, incremental
8.4 Cycles for Coordinate Transformations
X
Y Z
Y
X
Z
Y
X
Z
IX
IY
Y
X
Z
X
Y
DATUM SHIFT (Cycle 7)
Application
With the aid of a datum shift, machining operations can be repeated at
various locations on the workpiece.
Activation
When the DATUM SHIFT cycle has been defined, all coordinate data are
based on the new datum. Shifted axes are identified in the status display
by the letter N.
Input data
Only the coordinates of the new datum need to be entered. Absolute
values are based on the workpiece datum manually defined with datum
setting. Incremental values are based on the last valid datum; this datum
can itself be shifted.
Cancellation
To cancel a datum shift, enter the datum shift coordinates X = 0, Y = 0
and Z = 0.
When combining transformations, program the datum shift first.