HEIDENHAIN TNC 640 User Manual page 359

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Subprograms and Program Section Repeats | Any desired NC program as subprogram

Calling a program with SELECT PROGRAM and CALL

SELECTED PROGRAM

Use the function %:PGM to select any program as a subprogram

and call it at another position in the program. The control runs

the called program from the position where it was called in the

program with %<>%.

The %:PGM: function is also permitted with string parameters, so

that you can dynamically control program calls.

To select the program, proceed as follows:

To select the functions for program call, press

the PGM CALL key

Press the SELECT PROGRAM soft key

The control starts the dialog for defining the

program to be called.

Press the SELECT FILE soft key

The control shows a selection window that

allows you to select the program to be called.

Press the ENT key

To call the selected program, proceed as follows:

To select the functions for program call, press

the PGM CALL key

Press the CALL SELECTED PROGRAM soft key

With %<>%, the control calls the last program

If an NC program that was called using %<>% is missing,

then the control interrupts the execution or simulation

with an error message. In order to avoid undesired

interruptions during program run, all paths to the

program beginning can be checked using the D18

function (ID10 NR110 and NR111)

Further information:

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

"D18 – Reading system data",