HEIDENHAIN TNC 640 User Manual page 785

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Test Run and Program Run | Program run

Repeat these steps if required to jump to the

next start-up point

Press the NC Start key

The control resumes execution of the NC

Example of multi-level mid-program startup

You run a main program with several subprogram calls in the

program Sub.i. You work with a touch probe cycle in the main

program. You use the result of the touch probe cycle later for

positioning.

After an internal stop you wish to start up in block 80 in the second

call of the subprogram. This subprogram call is in block 530 of the

main program. The touch probe cycle is in block 280 of the main

program, i.e. before the desired start-up point.

Press the BLOCK SCAN soft key

In the pop-up window enter the following data:

Start-up at: N =280

Repetitions = 1

Select the Program Run Single Block operating

mode if required

Press the NC start key until the control runs the

touch probe cycle

The control saves the result.

Press the CONTINUE BLOCK SCAN soft key

In the pop-up window enter the following data:

Start-up at: N =530

Repetitions = 1

Press the NC start key until the control runs the

The control jumps into the subprogram Sub.i.

Press the CONTINUE BLOCK SCAN soft key

In the pop-up window enter the following data:

Start-up at: N =80

Repetitions = 1

Press the NC start key until the control runs the

The control continues to run the subprogram and

then returns to the main program.

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