HEIDENHAIN TNC 410 ISO Programming - Manual (Page 343)

HEIDENHAIN TNC 410, TNC 426, TNC 430 317
9.2 Sub
p
rogr
ams
9.2 Subprograms
Operating sequence
1 The TNC executes the part program up to the block in which a
subprogram is called with LN.0. n can be any label number.
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
n
A main program can contain up to 254 subprograms.
n You can call subprograms in any sequence and as often as desired.
n A subprogram cannot call itself.
n Write subprograms at the end of the main program (behind the block
with M2 or M30).
n If subprograms are located before the block with M02 or M30, they
will be executed at least once even if they are not called.
Programming a subprogram
U U U U To mark the beginning, select the function G98 and
confirm with the ENT key.
U U U U Enter the subprogram number and confirm with the
END key.
U U U U To mark the end, select the function G98 and enter the
label number “0”.
Calling a subprogram
U U U U To call a subprogram, press the L key.
U U U U Enter the label number for the subprogram you are
calling and “.0”.
% ...
L1,0
G00 Z+100 M2
G98 L1 *
G98 L0 *
N99999 % ...
98
L0.0 is not permitted, as it corresponds to the program
end call.