Sequence Of An Interrupt Routine In Program Operation - Siemens SINUMERIK 828D Function Manual

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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"

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] ").

Function Manual, Synchronized Actions

The activation of an interrupt routine is shown with the following NC/PLC interface signal:

DB21, ... DBX378.0 (ASUB active)

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.)

Basic Functions

Function Manual, 09/2011, 6FC5397-0BP40-2BA0

K1: Mode group, channel, program operation, reset response

9.10 Asynchronous subroutines (ASUBs), interrupt routines

Sinumerik 840d sl