DIN/ISO programming | Subprograms
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HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
4.33 Subprograms
Subprogram call L "xx" V1
The subprogram contains the following elements:
L: Identifying letter for subprogram call
"xx": Name of the subprogram—file name for external
subprograms (max. 16 letters or numbers)
V1: Identification code for external subprograms—omitted for local
subprograms
Note on using subprograms:
External subprograms are defined in a separate file. They can be
called from any main program or other subprogram
Local subprograms are in the main program file. They can be
called only from the main program
Subprograms can be nested up to 6 times. Nesting means that
another subprogram is called from within a subprogram
Recursion should be avoided
You can program up to 29 transfer values in one subprogram call
Designations: LA to LF, LH, I, J, K, O, P, R, S, U, W, X, Y, Z, BS,
BE, WS, AC, WC, RC, IC, KC and JC
The identification code within the subprogram is: #__..
followed by the parameter designation in lowercase letters (for
example: #__la)
You can use these transfer values when programming with
variables within the subprogram
String variables: ID and AT
The variables #l1 – #l99 are available in every subprogram as local
variables
To transfer a variable to the main program, program the
variable after the fixed word RETURN. In the main program, the
information is available in #i99.
If a subprogram is to be executed repeatedly, define in the
Number of repetitions Q parameter the number of times the
subprogram is to be repeated
A subprogram ends with RETURN
The parameter LN is reserved for the transfer of block
numbers. This parameter may receive a new value when
the NC program is renumbered.
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