User's Manual ISO TNC 360 (260020xx, 280490xx) - heidenhain

6 Subprograms and Program Section Repeats
6.2 Program Section Repeats
Principle
TNC 360
As with subprograms, program section repeats are
marked with labels.
The program is executed up to the end of the
labelled program section (block with Ln,m)
( 1 , 2 ).
Then the program section between the called
LABEL and the label call is repeated the number of
times entered for m ( 3 , 4 ).
After the last repetition, the program is resumed
( 5 ).
Programming notes
• A program section can be repeated up to 65 534
times in succession.
• The total number of times the program section
will be carried out is always one more than the
programmed number of repetitions.
Programming and calling a program section repeat
To mark the beginning:
L
G
9
e.g. 7
8
LABEL NUMBER?
END
ENT
Resulting NC block: G98 L7 *
.
7 1 0
END
.
.
.
.
.
.
.
.
.
.
.
% ... *
G98 L1 *
L1,2 *
N9999 % ... *
Fig. 6.2: Flow diagram with program section repeats;
R = return jump
Select the label setting function.
Number of repetitions
The number of repetitions is entered in the block which calls the label.
This block also identifies the end of the program section.
Resulting NC block: L7,10 *
1
2 3
R R
Repeat the program section beginning with LABEL 7, for example.
Repeat the program section from LABEL 7 to this block 10 times. In
this example, the program section will therefore be executed a total of
11 times.
5
4
6-5