Subprograms; Operating Sequence; Programming Notes - HEIDENHAIN TNC 640 User Manual

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Subprograms and Program Section Repeats | Subprograms

Subprograms

1 The control executes the part program up to the Ln,0 command

for calling a subprogram

2 The subprogram is then executed until the subprogram end

3 The control then resumes the part program from the block after

the subprogram call Ln,0

A main program can contain any number of subprograms

You can call subprograms in any sequence and as often as

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 640 | ISO Programming User's Manual | 10/2017