Siemens SINUMERIK 840D sl Programming Manual page 469

The program lines or program sections to be repeated are identified by jump markers (labels).
Note
Jump markers (labels)
Jump markers are always located at the beginning of a block. If a program number exists, the
jump marker is located immediately after the block number.
The following rules apply when naming jump markers:
● Number of characters:
– Minimum 2
– Maximum 32
● Permissible characters are:
– Letters
– Numbers
– Underscores
● The first two characters must be letters or underscores.
● The name of the jump marker is followed by a colon (":").
Syntax
1. Repeat individual program line:
<jump marker>: ...
...
REPEATB <jump marker> P=<n>
...
2. Repeat program section between jump marker and REPEAT statement:
<jump marker>: ...
...
REPEAT <jump marker> P=<n>
...
3. Repeat section between two jump markers:
<start jump marker>: ...
...
<end jump marker>: ...
...
REPEAT <start jump marker> <end jump marker> P=<n>
...
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Work preparation
3.1 Flexible NC programming
469