HEIDENHAIN TNC 320 (340 551-02) - Manual (Page 323)

HEIDENHAIN TNC 320 323
9.5 Nesting
9.5 Nesting
Types of nesting
„
Subprograms within a subprogram
„
Program section repeats within a program section repeat
„ Subprograms repeated
„ 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.
„
Maximum nesting depth for subprograms: approx. 64 000
„
Maximum nesting depth for main program calls: The nesting depth
is limited only by the available working memory.
„ You can nest program section repeats as often as desired.
Subprogram within a subprogram
Example NC blocks
0 BEGIN PGM SUBPGMS MM
...
17 CALL LBL “SP1” Call the subprogram marked with LBL SP1
...
35 L Z+100 R0 FMAX M2 Last program block of the
main program (with M02)
36 LBL “SP1” Beginning of subprogram SP2
...
39 CALL LBL 2 Call the subprogram marked with LBL 2
...
45 LBL 0 End of subprogram 1
46 LBL 2 Beginning of subprogram 2
...
62 LBL 0 End of subprogram 2
63 END PGM SUBPGMS MM