Siemens SINUMERIK 828D Function Manual page 597

Bit Value Description
1 Stop reason: Not all axes are referenced yet
0 Stop reason prevented ASUB start.
1 ASUB start also permitted, if all axes are not yet referenced.
2 Stop reason: Read­in disable is active
0 The ASUB is selected internally, but processed only when the read-in disable is
cancelled.
The value of the machine data MD20116 $MC_IGNORE_INHIBIT_ASUP is
evaluated.
In case MD20116=0, then an ASUB is triggered internally immediately, the blocks
of the ASUB Program are changed only with the cancellation of the read-in disable.
With the triggering of ASUB the path is decelerated immediately (except with the
option of BLSYNC).
A resetting of the read-in disable is done in the ASUP program.
1 ASUB start also permitted, when the read-in disable is active.
That is, the blocks of the ASUB program are changed and processed immediately.
In this way, the machine data MD20116 $MC_IGNORE_INHIBIT_ASUP becomes
ineffective.
The NCK behavior corresponds to the machine data allocation:
MD20116 $MC_IGNORE_INHIBIT_ASUP= FFFFFFFF.
Note
Explicit ASUB start
If MD11602 is set such that the ASUB may not be started automatically, the routine can still
be activated by the Start key. Any rapid retraction that may be parameterized is always
started.
Jogging during interruption of a JOG ASUB
In case of single or multi-channel systems the ASUB started automatically in the mode type JOG can be jogged
during interruption.
This functionality is enabled via the bit 3 in the machine data:
MD11602 $MN_ASUP_START_MASK
Bit Value Description
3 0 Jogging during interruption of a JOG ASUB is not possible.
1 Jogging during interruption of a JOG ASUB is possible.
In case of multi-channel systems, the bit 1 must also be set in the machine data MD11600 $MN_BAG_MASK.
After jogging, a REPOS is triggered with the START key and the ASUB is continued at the interruption point.
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
K1: Mode group, channel, program operation, reset response
9.10 Asynchronous subroutines (ASUBs), interrupt routines
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