HEIDENHAIN TNC 320 (340 55x-03) - Manual (Page 368)

368 9 Programming: Subprograms and Program Section Repeats
9.5 Nesting
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