HEIDENHAIN TNC 640 User Manual page 783

Test Run and Program Run | Program run
Procedure for simple mid-program startup
The control only displays the dialogs required by the
process in the pop-up window.
Press the BLOCK SCAN soft key
The control shows a pop-up window with the
active main program.
Start-up at: N = Enter the number of the
NC block where you wish to enter the NC
program
Program = Check the name and path of the
NC program containing the NC block, or enter
with the SELECT soft key
Repetitions = Enter the number of repetitions
which should be taken into account in
the block scan if the NC block is located
within a program section repetition.
Default 1 means initial machining operating
Press the NC Start key
The control starts the block scan, calculates until
the entered NC block and shows the next dialog.
If you changed the machine status:
Press the NC Start key
The control restores the machine status, e.g. tool
call, M functions and shows the next dialog.
If you changed the axis positions:
Press the NC Start key
The controls approaches the specified positions
in the defined sequence and displays the next
dialog message. Approach the axes in the self-
selected sequence:
Further information:
page 787
Press the NC Start key
The control resumes execution of the NC
program.
Example of simple mid-program startup
After an internal stop, you would like to start in block 120 in the
third machining operation of 1G98 L1.
In the pop-up window enter the following data:
Start-up at: N =120
Repetitions = 3
HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017
"Returning to the contour",
19
783