Siemens Sinumerik 840D sl Programming Manual page 104

Flexible NC programming
1.11 Repeat program section (REPEAT, REPEATB, ENDLABEL, P)
Further information
• Program section repetitions can be nested. Each call uses a subprogram level.
• If M17 or RET is programmed during processing of a program section repetition, the
repetition is canceled. The program is resumed at the block following the REPEAT line.
• In the actual program display, the program section repetition is displayed as a separate
subprogram level.
• If the level is canceled during the program section repetition, the program resumes at the
point after the program section repetition call.
Example:
Program code
N5 R10=15
N10 BEGIN: R10=R10+1
N20 Z=10-R10
N30 G1 X=R10 F200
N40 Y=R10
N50 X=-R10
N60 Y=-R10
N70 END: Z10
N80 Z10
N90 CYCLE(10,20,30)
N100 REPEAT BEGIN END P=3
N120 Z10
N130 M30
• Check structures and program section repetitions can be used in combination. There
should be no overlap between the two, however. A program section repetition should
appear within a check structure branch or a check structure should appear within a
program section repetition.
104
Comments
; Width
; Interrupt level
; Resume program execution.
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
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