HEIDENHAIN CNC PILOT 640 - Datum shifts

DIN/ISO programming | Datum shifts
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HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
4.13 Datum shifts
You can program several datum shifts in one NC program. The
relationships of the coordinates (for blank/finished part, auxiliary
contours) are not affected by the datum shifts.
G920 temporarily deactivates datum shifts—G980 reactivates
them.
Overview of datum shifts
G51
Relative shift
Programmed shift
Reference: Previously defined
workpiece datum
Page 305
G53/G54/G55
Relative shift
Shift defined in setup mode
(offset)
Reference: Previously defined
workpiece datum
Page 306
G56
Additive shift
Programmed shift
Reference: Workpiece datum
defined at present
Page 306
G59
Absolute shift
Programmed shift
Reference: Machine datum
Page 307