Datum Shift (Cycle 7, Din/Iso: G54); Effect; Cycle Parameters; Please Note While Programming - HEIDENHAIN TNC 640 User Manual

Cycles: Coordinate Transformations | DATUM SHIFT (Cycle 7, DIN/ISO: G54)

10.2 DATUM SHIFT (Cycle 7, DIN/ISO: G54)

Effect

A datum shift allows machining operations to be repeated at
various locations on the workpiece.
When the datum shift cycle is defined, all coordinate data is based
on the new datum. The TNC displays the datum shift in each axis in
the additional status display. Input of rotary axes is also permitted.
Resetting
Program a datum shift to the coordinates X=0, Y=0 etc. directly
with a cycle definition.
Call a datum shift to the coordinates X=0; Y=0 etc. from a
datum table.

Cycle parameters

Displacement: Enter the coordinates of the new
datum. Absolute values are referenced to the
workpiece datum, which is specified by presetting.
Incremental values are always referenced to the
datum which was last valid—this can be a datum
which has already been shifted. Input range:
Up to six NC axes, each from –99999.9999 to
99999.9999

Please note while programming

In the optional machine parameter CfgDisplayCoordSys
(no. 127501) you can specify the coordinate system in
which the status display shows an active datum shift.
HEIDENHAIN | User's manual for cycle programming | 10/2017
NC blocks
13 CYCL DEF 7.0 DATUM SHIFT
14 CYCL DEF 7.1 X+60
15 CYCL DEF 7.2 Y+40
16 CYCL DEF 7.3 Z-5
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