HEIDENHAIN TNC 620 User Manual page 506

14
Manual Operation and Setup
14.5 Datum management with the preset table
Input options
Soft key Function
Directly transfer the actual position of the tool (the
measuring dial) as the new datum: This function
only saves the preset in the axis in which the
cursor is currently hovering.
Assign any value to the actual position of the tool
(the measuring dial): This function only saves the
preset in the axis in which the cursor is currently
hovering. Enter the desired value in the pop-up
window
Incrementally shift a datum already stored in the
table: This function only saves the preset in the
axis in which the cursor is currently hovering.
Enter the desired corrective value with the correct
sign in the pop-up window. If inch display is
active: Enter the value in inches, and the TNC will
internally convert the entered values to mm
Directly enter the new datum without calculation
of the kinematics (axis-specific). Only use this
function if your machine has a rotary table, and
you want to set the datum to the center of the
rotary table by entering 0. This function only
saves the preset in the axis in which the cursor is
currently hovering. Enter the desired value in the
pop-up window. If inch display is active: Enter the
value in inches, and the TNC will internally convert
the entered values to mm
Select the BASE TRANSFORM./OFFSET view. The
standard BASE TRANSFORM. view shows the X,
Y and Z columns. Depending on the machine,
the SPA, SPB and SPC columns are displayed
additionally. The TNC saves the basic rotation
here (with the Z tool axis the TNC uses the SPC
column). The OFFSET view shows the offset
values for the preset.
Write the currently active datum to a selectable
line in the table: This function saves the datum
in all axes, and then activates the appropriate
row in the table automatically. If inch display is
active: Enter the value in inches, and the TNC will
internally convert the entered values to mm
506
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016