Siemens SINUMERIK 840D sl Function Manual page 601

Reference:
More detailed information on ASUB, block search, and action blocks is to be found in:
• /FB1/Function Manual, Basic Functions; Auxiliary Function Output to PLC (H2),
• /FB1/ Function Manual, Basic Functions; Mode Group, Channel, Program Operation (K1)
• /FB1/ Function Manual, Basic Functions; Spindles (S1),
2.5.3 Automatic start of an ASUB after block search
Activation
The automatic ASUB start after block search is configured in the existing machine data:
MD11450 $MN_SEARCH_RUN_MODE
with bit 1 = 1 (TRUE).
Bit 1 = 1:
When the last action block is activated, user program
/_N_CMA_DIR/_N_PROG_EVENT_SPF is started as an ASUB.
Start event
The event that has started this user program can be determined by scanning system variable
$P_PROG_EVENT. If it is an ASUB Start after a block search, the value 5 can be scanned
using system variable $P_PROG_EVENT.
Note
For further information about the parameter assignment for specific events, see "Event-
driven program calls".
Basic logic functions: Mode group, channel, program operation, reset response (K1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Section: Output suppression of spindle-specific auxiliary functions
Section: Program test
Section: Auxiliary spindle functions after block search
Automatic start of user program
/_N_CMA_DIR/_N_PROG_EVENT_SPF as an ASUB.
Detailed description
2.5 Block search
43