HEIDENHAIN TNC 640 (34059x-01) ISO programming - Manual (Page 205)

HEIDENHAIN TNC 640 205
7.
2 Subpr
ogr
a
ms
7.2 Subprograms
Operating sequence
1 The TNC executes the part program up to the block in which a
subprogram is called with Ln,0
2 The subprogram is then executed from beginning to end. The
subprogram end is marked G98 L0
3 The TNC then resumes the part program from the block after the
subprogram call Ln,0
Programming notes
„ A main program can contain up to 254 subprograms
„ You can call subprograms in any sequence and as often as desired
„ A subprogram cannot call itself
„ Write subprograms at the end of the main program (behind the block
with M2 or M30)
„ If subprograms are located before the block with M2 or M30, they
will be executed at least once even if they are not called
Programming a subprogram
U To mark the beginning, press the LBL SET key
U Enter the subprogram number. If you want to use a
label name, press the LBL NAME soft key to switch
to text entry
U To mark the end, press the LBL SET key and enter the
label number "0"
Calling a subprogram
U To call a subprogram, press the LBL CALL key
U Label number : Enter the label number of the
subprogram you wish to call. If you want to use a label
name, press the LBL NAME soft key to switch to text
entry
% ...
L1,0
G00 Z+100 M2
G98 L1 *
G98 L0 *
N99999 % ...
1
2
3
R
S
G98 L 0 is not permitted (Label 0 is only used to mark the
end of a subprogram).