Siemens SINUMERIK 840D sl Programming Manual page 502

Work preparation
3.2 Subprogram technique
canceled. With the programmed return command, the decision is made whether to stop at the
end of the subprogram:
● Return with M17: Stop at the end of the subprogram
● Return with RET: No stop at end of subprogram
Suppressing single block machining within the NC program
If the deactivation of single block machining (SBLOF) is programmed in a block within an NC
program, then single block machining is deactivated from this block onward up to the next
programmed activation of single block machining (SBLON) - or at the end of the active
subprogram level.
Syntax
Suppressing single block machining for the complete NC program:
PROC ... SBLOF
...
Suppressing single block machining within the NC program:
...
SBLOF
...
SBLON
...
Meaning
PROC:
SBLOF:
SBLON:
502
First operation in a program
Predefined procedure to deactivate single block machining
Alone in the block: Yes, possible in the PROC block
Effectiveness: Modal
Predefined procedure to activate single block machining
Alone in the block: yes
Effectiveness: Modal
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming