Siemens SINUMERIK 828D Function Manual page 600

K1: Mode group, channel, program operation, reset response
9.10 Asynchronous subroutines (ASUBs), interrupt routines
Suppress updating of the display of the program and channel statuses.
In order to avoid a flickering of the display of the program and the channel statuses in the operator panel, the
updating of the display can be suppressed for the execution of the normally very brief interrupt routines. The
program and the channel status before the activation of the interrupt routine then remain visible in the display.
The parameterization of this function is done with the channel-specific machine data:
MD20191 $MC_IGN_PROG_STATE_ASUP
Bit Value Description
The updating of the display of the program and channel statuses is:
0 • during execution the interrupt routine is assigned to the interrupt signal 1:
0 is not suppressed.
1 suppressed.
1 • during execution the interrupt routine is assigned to the interrupt signal 2:
0 is not suppressed.
1 suppressed.
2 • during execution the interrupt routine is assigned to the interrupt signal 3:
0 is not suppressed.
1 suppressed.
...
The activation of an interrupt routine with suppressed display updating is shown with the following NC/PLC
interface signal:
DB21, ... DBX378.1 (stopped ASUB active)
Note
The system variables $AC_STAT and $AC_PROG are not affected by this function, i.e. in the
running interrupt routine $AC_STAT is set to "active" and $AC_PROG to "running".
NC/PLC interface signals DB21, ... DBX35.0-7 ("Program status ..." and "Channel status ...")
also remain unaffected.
Fast retraction from contour (LIFTFAST)
If mirroring is active for execution via frames, then the following machine data can be used to set whether during
"fast retraction from the contour" the retraction direction is also to be mirrored:
MD21202 $MC_LIFTFAST_WITH_MIRROR (fast retraction with mirroring)
The distance for the fast retraction is stored for the 3 geometry axes in the machine data:
MD21200 $MC_LIFTFAST_DIST (Traversing path for fast retraction from the contour)
The maximum axis acceleration (MD32300 $MA_MAX_AX_ACCEL) effective during the LIFTFAST motion is
reduced by a factor, which is specified in the following machine data:
MD20610 $MC_ADD_MOVE_ACCEL_RESERVE
This creates an acceleration reserve for an overlayed motion.
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions