Siemens Sinumerik 840D sl Programming Manual page 187

Significance
RET:
<destination block>:
<block after
destination block>:
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
Subprogram end (use instead of M17)
Return jump parameter 1
Declares as jump destination the block where program
execution should be resumed.
If the return jump parameter 3 is not programmed, then
the jump destination is in the program from which the
current subprogram was called.
Possible data include:
"<block number>" Number of the destination block
"<jump marker>" Jump marker that must be set in the
destination block.
"<character Character string that must known in
string>" the program (e.g. program or
variable name).
The following rules apply when
programming the character string:
•
•
Return jump parameter 2
Refers to the return jump parameter 1.
Type: INT
Value: 0 Return jump is made to the block that
was specified using return jump
parameter 1.
> 0 Return jump is made to the block that
follows the block specified with return
jump parameter.
Flexible NC programming
1.25 Subprogram technique
Blank at the end (contrary to the
jump marker, that is designated
using ":" at the end).
Before the character string only
one block number and/or a jump
marker may be set, no program
commands.
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