HEIDENHAIN iTNC 530 (340 49x-03) Pilot - Manual (Page 41)

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Subprograms and program section
repeats
Subprograms and program section repeats enable you to program a
machining sequence once and then run it as often as desired.
Working with Subprograms
1 The main program runs up to the subprogram call CALL LBL 1.
2 The subprogram—labeled with LBL 1—runs through to its end at
LBL 0.
3 The main program resumes.
It's good practice to place subprograms after the main program end (M2).
Working with Program Section Repeats
1 The main program runs up to the call for a section repeat CALL LBL 1
REP2.
2 The program section between LBL 1 and CALL LBL 1 REP2 is repeated
the number of times indicated with REP.
3 After the last repetition the main program resumes.
„ Answer the dialog prompt REP with the NO ENT key.
„ You cannot call CALL LBL0!
0 BEGIN PGM ...
CALL LBL1
L Z+100 M2
LBL1
LBL0
END PGM ...
Altogether, the program section is run once more than the
number of programmed repeats.
0 BEGIN PGM ...
LBL1
CALL LBL1 REP 2/2
END PGM ...