Siemens SINUMERIK 840Di Function Manual page 644

Detailed Description
2.7 Program operation mode
Details
Explicit ASUB start
If MD11602 $MN_ASUP_START_MASK 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.
Priorities
Machine data MD11604 $MN_ASUP_START_PRIO_LEVEL can be used to specify the
minimum priority level that the settings in MD11602 $MN_ASUP_START_MASK are to affect
(1-128, 1 corresponds to the highest priority level). The priority specified in this machine data
covers all priority levels from 1 up to the specified level.
Effect of VDI signals on mode group channels
Machine data MD11600 $MN_BAG_MASK can be set to control the effect of mode group
signals (mode group reset, mode group stop axes and spindles, mode change disable) on
mode group channels in which interrupt routines are currently being processed.
The machine data also defines whether the internal program execution mode applies only to
the one channel in which the interrupt routine has been activated or to all channels in the
mode group.
If, via MD 11600 $MN_BAG_MASK, the channel in which the interrupt is running has left the
mode group, the mode group signals Mode Group RESET, Mode Group STOP, and Mode
Group STOPALL have no effect on this channel. In this way the ASUP can proceed
unhindered by mode group signals.
NC response
The following table describes the NC response in the individual operational states:
Status of NC
Program is active
RESET
Program mode
AUTOMATIC or MDA and
channel stopped
2-108
Start of ASUB Control system reaction
Interrupt, (PLC) Rapid retraction or stop axes
Interruption of program for duration of ASUB
Approach to interruption point if ASUB contains REPOS
Continuation of part program.
Interrupt, (PLC) The ASUB is executed like a main program. RESET (without M30) is
executed at the end of the ASUB. The next control system status
depends on the following machine data:
MD 20110 $MC_RESET_MODE_MASK
MD20112 $MC__START_MODE_MASK
References: /FB1/, K2, "WorkpieceRelated Actual Value System"
Interrupt, (PLC) ASUB is executed. At the end of the ASUB the STOP state is
reapplied.
REPOS in the ASUB:
- ASUB processing is stopped by the approach block. - The approach
movement can be initiated with the Start key.
Start key Once the ASUB has been executed, processing of the interrupted
program is resumed.
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0