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Repeating program section repeats, 10 .5 nesting – HEIDENHAIN iTNC 530 (340 49x-04) User Manual

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10 Programming: Subprograms and Program Section Repeats

1

0

.5 Nesting

Program execution

1

Main program SUBPGMS is executed up to block 17

2

Subprogram 1 is called, and executed up to block 39.

3

Subprogram 2 is called, and executed up to block 62. End of
subprogram 2 and return jump to the subprogram from which it
was called.

4

Subprogram 1 is executed from block 40 up to block 45. End of
subprogram 1 and return jump to the main program SUBPGMS.

5

Main program SUBPGMS is executed from block 18 up to block
35. Return jump to block 1 and end of program.

Repeating program section repeats

Example NC blocks

Program execution

1

Main program REPS is executed up to block 27

2

Program section between block 20 and block 27 is repeated twice.

3

Main program REPS is executed from block 28 to block 35.

4

Program section between block 15 and block 35 is repeated once
(including the program section repeat between 20 and block 27).

5

Main program REPS is executed from block 36 to block 50 (end of
program).

0 BEGIN PGM REPS MM

...

15 LBL 1

Beginning of program section repeat 1

...

20 LBL 2

Beginning of program section repeat 2

...

27 CALL LBL 2 REP 2

The program section between LBL 2 and this block

...

(block 20) is repeated twice

35 CALL LBL 1 REP 1

The program section between LBL 1 and this block

...

(block 15) is repeated once

50 END PGM REPS MM