HEIDENHAIN TNC 320 (340 55x-03) - Manual (Page 363)

HEIDENHAIN TNC 320 363
9.2 Subpr
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9.2 Subprograms
Operating sequence
1 The TNC executes the part program up to the block in which a
subprogram is called with CALL LBL.
2 The subprogram is then executed from beginning to end. The
subprogram end is marked LBL 0.
3 The TNC then resumes the part program from the block after the
subprogram call CALL LBL
Programming notes
„ A main program can contain up to 254 subprograms.
„ You can call subprograms in any sequence and as often as desired.
„ A subprogram cannot call itself.
„ Write subprograms at the end of the main program (behind the block
with M02 or M30).
„ If subprograms are located before the block with M02 or M30, they will
be executed at least once even if they are not called.
Programming a subprogram
 To mark the beginning, press the LBL SET key.
 Enter the subprogram number.
 To mark the end, press the LBL SET key and enter the
label number 0.
Calling a subprogram
 To call a subprogram, press the LBL CALL key.
 Label number: Enter the label number of the
subprogram you wish to call. If you want to use a label
name, press the key ” to switch to text entry.
 Repeat REP: Ignore the dialog question with the NO
ENT key. Repeat REP is used only for program
section repeats.
CALL LBL 0 is not permitted (Label 0 is only used to mark
the end of a subprogram).