HEIDENHAIN iTNC 530 (340 420) - Manual (Page 394)

366 9 Programming: Subprograms and Program Section Repeats
9.5 Nesting
9.5 Nesting
Types of nesting
n
Subprograms within a subprogram
n Program section repeats within a program section repeat
n Subprograms repeated
n Program section repeats within a subprogram
Nesting depth
The nesting depth is the number of successive levels in which
program sections or subprograms can call further program sections or
subprograms.
n Maximum nesting depth for subprograms: 8
n Maximum nesting depth for main program calls: 6, where a CYCL
CALL acts like a main program call.
n
You can nest program section repeats as often as desired.
Subprogram within a subprogram
Example NC blocks
0 BEGIN PGM UPGMS MM
...
17 CALL LBL 1 Call the subprogram marked with LBL 1
...
35 L Z+100 R0 FMAX M2 Last program block of the
main program (with M2)
36 LBL 1 Beginning of subprogram 1
...
39 CALL LBL 2 Call the subprogram marked with LBL2
...
45 LBL 0 End of subprogram 1
46 LBL 2 Beginning of subprogram 2
...
62 LBL 0 End of subprogram 2
63 END PGM UPGMS MM