HEIDENHAIN TNC 620 User Manual page 498

14
Manual Operation and Setup
14.5 Datum management with the preset table
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 mode, but you
cannot 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/or basic rotations
in the preset table:
Using the probing cycles in the MANUAL OPERATION and EL.
HANDWHEEL modesELECTRONIC HANDWHEEL
Using probing cycles 400 to 402 and 410 to 419 in automatic
mode
Further information:
Manual input
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.
498
Cycle Programming User's Manual
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015