TNC 426/TNC 425/TNC 415 B/TNC 407
6-8
6
Subprograms and Program Section Repeats
6.3 Program as Subprogram
Operating sequence
A program is executed (
1
) up to the block in which
another program is called (block with %).
Then the other program is run from beginning to
end (
2
).
The first program is then resumed beginning with
the block behind the program call (
3
).
Operating limitations
• Programs called from an external data medium
(e.g., floppy disk) must not contain any subpro-
grams or program section repeats.
• No labels are needed to call main programs as
subprograms.
• The called program must not contain the miscel-
laneous functions M02 or M30.
• The called program must not contain a jump into
the calling program.
Calling a program as a subprogram
PROGRAM NAME ?
Enter the name of the program that you wish to call from this block.
Function
Soft key
Call a plain-language program
Call an ISO program
Call an externally stored program
Resulting NC block: % NAME
• You can also call a program with cycle G39 (see page 8-53).
• When calling an ISO program, the program name must not contain G50, G70 or G71.
The following additional notes apply to the TNC 426:
• If the program you want to call is located in the same directory as the program you are calling it from, you only
have to enter the program name.
• If the program you want to call is not located in the same directory as the program you are calling it from, then
you must enter the full path (e.g., \VZW35\ROUGH\PGM1.I).
• If you want to call a plain-language program, enter the file type .H behind the program name.
R
S
% A ... *
% B *
N99999
% A ... *
1
3
% B ... *
N99999
% B … *
2
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
0
/
0
Fig. 6.3:
Flow diagram of a program as subprogram.
S
= jump,
R
= return jump
426
