HEIDENHAIN TNC 426 B User Manual page 237

Status Displays
If datums in the table are referenced to the machine datum, then:
The actual position values are referenced to the active (shifted)
datum.
All of the position values shown in the additional status display
are referenced to the machine datum, whereby the TNC accounts
for the manually set datum.
Editing a datum table
Select the datum table in the PROGRAMMING AND EDITING mode
of operation.
To call the file manager, press the PGM MGT key —
see section 4.2 "File Management" for more
information.
Display the datum tables: Press the soft keys SELECT
TYPE and SHOW .D
Select the desired table or enter a new file name.
Edit the file. The soft-key row comprises the following
functions for editing:
Function
Select beginning of table
Select end of table
Go to the previous page
Go to the next page
Insert line (only possible at the end of table)
Delete line
Confirm the entered line and go to
the beginning of the next line
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Soft key
8 Programming: Cycles