HEIDENHAIN TNC 620 Programming Station, User Manual, Page: 504 / 695

Manual Operation and Setup
14.5 Datum management with the preset table
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HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
Saving the datums in the preset table
The preset table has the name
PRESET.PR
, and is saved in the
directory
TNC:\table
.
PRESET.PR
is editable in the
MANUAL
OPERATION
and
ELECTRONIC HANDWHEEL
modes only if
the
CHANGE PRESET
soft key was pressed. You can open the
PRESET.PR
preset table in the
PROGRAMMING
operating mode but
not edit it.
It is permitted to copy the preset table into another directory (for
data backup). Write-protected rows are also write-protected in the
copied tables.
Never change the number of rows in the copied tables! If you want
to reactivate the table, this may lead to problems.
To activate the preset table copied to another directory you have to
copy it back to the directory
TNC:\
table\.
There are several methods for saving datums and basic rotations in
the preset table:
Manual input
Using the probing cycles in the
MANUAL OPERATION
and
ELECTRONIC HANDWHEEL
modes
ELECTRONIC HANDWHEEL
Using probing cycles 400 to 402 and 410 to 419 in automatic
mode
Further information: Cycle Programming User's Manual
Basic rotations from the preset table rotate the
coordinate system about the preset, which is shown
in the same line as the basic rotation.
Remember to ensure that the position of the tilting
axes matches the corresponding values of the 3-D
ROT menu when setting the datum. Therefore:
If the "Tilt working plane" function is not active,
the position display for the rotary axes must be =
0° (zero the rotary axes if necessary).
If the "Tilt working plane" function is active, the
position displays for the rotary axes must match
the angles entered in the 3-D ROT menu.
PLANE RESET
does not reset the active 3-D rotation.
The line 0 in the preset table is write protected. In
line 0, the TNC always saves the datum that you
most recently set manually via the axis keys or via
soft key. If the datum set manually is active, the TNC
displays the text
PR MAN(0)
in the status display