HEIDENHAIN TNC 320 (34055x-06) Cycle programming - Manual (Page 222)

Cycles: Coordinate Transformations
11.3 DATUM SHIFT with datum tables (Cycle 7, DIN/ISO: G53)
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TNC 320 | User's Manual Cycle Programming | 5/2013
11.3 DATUM SHIFT with datum tables
(Cycle 7, DIN/ISO: G53)
Effect
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.
Resetting
Call a datum shift to the coordinates X=0; Y=0 etc. from a
datum table.
Execute a datum shift to the coordinates X=0, Y=0 etc. directly
with a cycle definition
Status displays
In the additional status display, the following data from the datum
table are shown:
Name and path of the active datum table
Active datum number
Comment from the DOC column of the active datum number
Please note while programming:
Danger of collision!
Datums from a datum table are always and
exclusively referenced to the current datum (preset).