K1: Mode group, channel, program operation, reset response
9.10 Asynchronous subroutines (ASUBs), interrupt routines
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
593
Activating
The activation of an interrupt routine can be done:
• By a 0/1 transition of the interrupt signal, triggered by a 0/1 transition at the rapid NC input
• by the call of the "Function Call ASUB"
References:
Function Manual Basic Functions; PLC Basic Program (P3)
• an exit is set via the synchronous action, which indirectly sets an interrupt entry via short-circuit (see
"Examples [Page 603]").
References:
Function Manual, Synchronized Actions
Display
The activation of an interrupt routine is shown with the following NC/PLC interface signal:
DB21, … DBX378.0 (ASUB active)
9.10.1.2 Sequence of an interrupt routine in program operation
Decelerating the axes
Upon activation, all machine axes are decelerated to a standstill according to the acceleration ramp(MD32300
$MA_MAX_AX_ACCEL), and the axis positions are stored.
Reorganization
In addition to decelerating the axes, the previously decoded calculation blocks are calculated back to the
interruption block. i.e. all the variables, frames and G codes are assigned the value that they would have at the
point of interruption if the part program had not been previously decoded. These values are put in the buffer so
that they can be called up again when the interrupt routine is completed.
Exceptions, where no reorganization is possible:
• In thread cutting blocks
• With complex geometries (e.g. spline or radius compensation)
Processing of interrupt routine
The Interrupt routine is automatically started on completion of reorganization.
The system handles the interrupt routine like a normal part program (nesting depth, etc.)
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