HEIDENHAIN TNC 640, User Manual, Page: 533 / 948

Special Functions | Global Program Settings (option 44)
12
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
533
By entering values in the
Max. val.
column, you define which
axes may be moved using the handwheel and the maximum path
by which they may be moved. Since the input value applies to
both directions (both positive and negative), the maximum path is
double the input value.
In the
Actl.val.
column, the control displays the path traversed
using the handwheel for each axis.
The
Actl.val.
column can also be edited manually. However,
if you enter a value that exceeds the current
Max. val.
, it will
be impossible to activate the value. The wrong value will be
highlighted in red. Moreover, the control displays a warning
message and prevents you from closing the form.
If the
Actl.val.
column contains a value when you activate the
function, the control will move to the new position via the menu for
returning.
Further information: "Returning to the contour", page 839
Using the
CONFIRM VALUE
soft key, you can transfer
the axis-specific values from the
Actl.val.
column to
the shift values defined in the
Global Program Settings
function. This transfer is only possible for the principal
axes. In addition, the coordinate systems must match.
Further information: "Shift (W-CS)", page 527 and
page 529
When the values are applied, the control resets the
input fields of the
Actl.val.
column.
If you apply the values more than once, the control will
sum up the shift values.
NOTICE
Danger of collision!
If both methods for setting
Handwheel superimp.:
, i.e. with
M118
or by using the
Global Program Settings
function, are
effective at the same time, the definitions influence each other,
depending on their sequence of activation. There is risk of
collision during the execution of
Handwheel superimp.:
and
during the subsequent machining operations!
If possible, only use one method for
Handwheel superimp.:
Preferably use the
Handwheel superimp.:
option in the
Global Program Settings
function
Test the behavior at the machine
HEIDENHAIN does not recommend to use both methods
of setting
Handwheel superimp.:
at the same time. If it is
impossible to remove
M118
from the NC program, you should
activate
Handwheel superimp.:
in the
Global Program Settings
function prior to selecting the program. This ensures that the
control uses the
Global Program Settings
function rather than
M118
.