HEIDENHAIN TNC 360 ISO Programming - Manual (Page 126)

6 Subprograms and Program Section Repeats
6-3 TNC 360
6.1 Subprograms
9 8
L
e.g. 5
0
G
G
5
8 9
. 0
ENT
ENT
END
END
END
Programming and calling subprograms
To mark the beginning of the subprogram:
Select the label setting function.
LABEL NUMBER?
In this example, the subprogram begins with LABEL 5.
Resulting NC block: G98 L5 *
To mark the end of the subprogram:
A subprogram must always end with label number 0.
Select the label setting function.
LABEL NUMBER?
End of subprogram.
Resulting NC block: G98 L0 *
To call the subprogram:
A subprogram is called with its label number.
Calls the subprogram following LBL 5.
Resulting NC block: L5,0 *
The command L0,0 is not allowed because label 0 can only be used to mark the end of a subprogram.