Subprograms; Operating Sequence; Programming Notes - HEIDENHAIN TNC 620 User Manual

8.2

Subprograms

Operating sequence

1 The TNC executes the part program up to calling a subprogram,
CALL LBL.
2 The subprogram is then executed from beginning to end, 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 any number of subprograms
You can call subprograms in any sequence and as often as
desired
A subprogram cannot call itself
Write subprograms after the block with M2 or M30
If subprograms are located before the block with M2 or M30
in the part program, they will be executed at least once even if
they are not called
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
Subprograms 8.2
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