HEIDENHAIN TNC 320 (340 55x-03) - Manual (Page 364)

364 9 Programming: Subprograms and Program Section Repeats
9.3 Pr
ogr
am Section Repeats
9.3 Program Section Repeats
Label LBL
The beginning of a program section repeat is marked by the label LBL.
The end of a program section repeat is identified by CALL LBL ... REP.
Operating sequence
1 The TNC executes the part program up to the end of the program
section (CALL LBL ... REP)
2 Then the program section between the called LBL and the label
call CALL LBL ... REP is repeated the number of times entered
after REP.
3 The TNC then resumes the part program after the last repetition.
Programming notes
„ You can repeat a program section up to 65 534 times in succession.
„ The total number of times the program section is executed is always
one more than the programmed number of repeats.
Programming a program section repeat
 To mark the beginning, press the LBL SET key and
enter a LABEL NUMBER for the program section you
wish to repeat. If you want to use a label name, press
the key ” to switch to text entry.
 Enter the program section.
Calling a program section repeat
 Press the LBL CALL key and enter the label number of
the program section you want to repeat as well as the
number of repeats REP.
0 BEGIN PGM ...
LBL1
CALL LBL 2
END PGM ...
1
2
3
R R
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