Operating manual
CNC 8070
AUTOMATIC MODE
4.
(REF: 1505)
·79·
Program simulation and execution.
4.3.5 Cancel the execution and resume from another block while keeping the
history.
The CNC allows canceling the execution of an interrupted program ([STOP] key) keeping
the program history (machining conditions) and resume execution at another previous or
later block of the same program. Before resuming execution, it is possible to access the
MDI/MDA mode and execute blocks. The CNC resumes the program at the selected block
with the history active up to the interrupted block plus the changes executed via MDI/MDA.
This option to cancel and resume may be useful when combined with tool inspection, after
canceling or finishing the repositioning of the axes. At that moment, it will be possible to select
a program block, previous or after the interruption block, and resume program execution from
that point on. When linking this option with the end of tool inspection, the repositioning of
the axes always corresponds to the starting point of tool inspection and this repositioning
is done before selecting the block to resume.
It acts as follows:
2 If necessary, access the MDI/MDA mode to execute the necessary blocks to adapt to the
new starting point (position the axes, change the machining conditions, etc.).
3 Select the new starting block to resume execution, it may be a block before or after the
interruption block. The block is selected by moving the cursor throughout the program
or through the search options for text or program line.
4 Once the stating block has been selected, press the [START] key to resume execution
at that block. Resuming the program does not initialize or change the program history,
nor does it take into consideration the possible changes programmed in the blocks that
are not executed between the interruption block and the resuming block of the program.
The CNC resumes execution with the history active up to the interrupted block plus the
changes executed via MDI/MDA.
The CNC offers no automatic repositioning of axes. For positioning for example, at the
starting point of the block where the execution is to be resumed, it must be done via MDI/MDA
(if the exact point is known) or select as starting point the motion block right before the desired
one.
Considerations before resuming the execution of the program.
It is up to the user to use this feature properly and in the right context, using the MDI/MDA
mode to adapt the new starting point to the conditions of the interruption point if necessary.
For example:
• When selecting an arc as the starting point, use the MDI/MDA mode to place the axes
in their starting point; otherwise the CC will issue programming error messages or it will
execute arcs different from the original one. This situation may also be solved by selecting
as starting point a previous linear block that positions the axes in the starting point of the
right arc.
• If G91 is active in the history of the program, position at the starting point of the original
block; otherwise, the resulting path will be different because it will always be incremental
with respect to the starting point.
• The execution cannot be canceled inside a canned cycle, both ISO and that of the cycle
editor.
• Inside a loop ($IF, $GOTO, etc), the execution can only be resumed if the resuming block
is at the same level as the block where it was canceled.
Modify the interrupted program.
If the interrupted program has a ".mod" extension, it may be modified from the editor while
it is interrupted. It is up to the user to check that the changes he makes are coherent.
For the CNC to assume the changes, the modified block must be after the block where it
resumes execution.
1 After interrupting the execution ([STOP] key), the vertical softkey menu of the
automatic mode will show the following softkey. Pressing this softkey, the CNC
interrupts the execution of the program keeping the history (machining
conditions) active at the interruption point. The message bar indicates that a
program block may be selected to resume execution.
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