Fagor America CNC8070 - Manual (Page 95)

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CNC 8070
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3.6.4 Block search and program execution
With block search, it is possible to recover the program history up to a particular block
in such way that if program execution is resumed at that block, it will do so with the
same conditions as if it were executed from the beginning.
There are two types of block search:
• Automatic
To recover the program history up to the block where the execution was canceled.
The CNC remembers the block where interruption was canceled, thus not being
necessary to set the stop block.
• Manual
To recover the program history up to a particular block set by the operator.
When recovering the program history, the CNC reads it up to the indicated block
activating the "G" and "M" functions it reads along the way. Likewise, it sets the
feedrate and spindle speed conditions of the program and calculates the position
where the axes should be.
To recover the program history, proceed as follows:
1. To do an automatic search, i.e. restore the history up to the point where the
program was interrupted, press "Automatic Search". The search starting point
may be chosen by selecting the first block.
2. For a manual search, set the last point using the stop block, select the subroutine
(optional) and the number of times (optional). The search starting point may be
chosen by selecting the first block.
3. Press [START] to recover the program history.
The CNC will set the feedrate and speed conditions of the program and will start
the spindle in the set direction ("M3" or "M4"). It will also activate the "M" and "G"
functions defined in the program.
4. Reposition the axes to the position to resume execution.
5. Press [START] to execute the program.
Reposition the axes.
• Manually
Jog the axes with the handwheels or with the JOG keys. The movement is limited
by the repositioning end point and the corresponding software limit.
• Automatically
Select the axes with the relevant softkey and press [START]. Repositioning may
be interrupted (using the [STOP] key) to select other axes.
When an axis reaches the repositioning end point, it is no longer available; however,
this axis may be moved with the handwheel or the JOG keys under the same
conditions as before. Once all the axes have been repositioned, none of them may
be moved.
To reposition the axes, press the corresponding icon and the CNC will show the axes
that are out of position.
The axes may be repositioned individually or several at the same time in one of the
following ways: