Siemens Sinumerik 840D sl Programming Manual page 174

Flexible NC programming
1.25 Subprogram technique
Syntax
Single block suppression for the complete program:
PROC ... SBLOF
Single block suppression within the program:
SBLOF
...
SBLON
Significance
PROC:
SBLOF:
SBLON:
Restrictions
• Single block suppression and block display
The current block display can be suppressed in cycles/subprograms using DISPLOF.
IfDISPLOF is programmed together withSBLOF, then the cycle/subprogram call continues
to be displayed on single-block stops within the cycle/subprogram.
• Single block suppression in the system ASUB or user ASUB
If the single block stop in the system or user ASUB is suppressed using the settings in
machine data MD10702 $MN_IGNORE_SINGLEBLOCK_MASK (bit0 = 1 or bit1 = 1), then
the single block stop can be re-activated by programming SBLON in the ASUB.
If the single block stop in the user ASUB is suppressed using the setting in machine data
MD20117 $MC_IGNORE_SINGLEBLOCK_ASUP then the single block stop cannot be
reactivated by programming SBLON in the ASUB.
• Special features of single block suppression for various single block execution types
When single block execution SBL2 is active (stop after each part program block) there is
no execution stop in the SBLON block if bit 12 is set to "1" in the
MD10702 $MN_IGNORE_SINGLEBLOCK_MASK (prevent single block stop).
When single block execution SBL3 is active (stop after every part program block - also in
the cycle), the SBLOF command is suppressed.
174
First instruction in a program
Command to deactivate single block execution
SBLOF can be written in a PROC block or alone in the block.
Command to activate single block execution
SBLON must be in a separate block.
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
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