Siemens SINUMERIK 828D Programming Manual page 177

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General conditions

When making a return jump through several program levels, the

individual program levels are evaluated.

If, for a return jump over several program levels, a modal subprogram is active and if in one

of the skipped programs the de-selection command

subprogram, then the modal subprogram remains active.

The programmer must carefully ensure that for a return jump over several program levels,

the program continues with the correct modal settings. This can be achieved, e.g. by

programming an appropriate main block.

Example 1: Resuming in the main program after ASUB execution

N10010 CALL "UP1"

N11000 PROC UP1

N11010 CALL "UP2"

N10910 MCALL

N10920 G0 G60 G40 M5

Job planning

Programming Manual, 07/2010, 6FC5398-2BP40-0BA0

N12000 PROC UP2

N19000 PROC ASUB

N19100 RET("N10900", ,$P_STACK)

Flexible NC programming

1.25 Subprogram technique

instructions of the

is programmed for the modal

; Program level 0 (main program)

; Program level 1

; Program level 2

; Program level 3 (ASUB execution)

; Subprogram return.

; Resumption in main program.

; Deactivate modal subprogram.

; Correct additional modal settings.

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