Siemens SINUMERIK 840D sl Function Manual page 2086

Detailed Description
2.9 Mode group, channel, program operation, reset response (K1)
DB21, ...
DBX6.4
Program level abort
Edge evaluation: yes
Signal state 1 or At each edge change 0 → 1 the current program level being processed (subroutine level, ASUB
edge change level, save routine) is immediately aborted. Processing of the part program continues at the next
0 → 1 higher program level from the exit point.
Signal state 0 or No effect.
edge change
1 → 0
Special cases, The main program level cannot be aborted with this IS, only with IS "Reset".
errors, ......
DB21, ...
DBX7.0 NC START disable
Edge evaluation: no
Signal state 1 or The NC START disable prevents a part program from being started with NC START signal DB21, ...
edge change DBX7.1 (NC START) == 1.
0 → 1
Signal state 0 or NC START disable is not active.
edge change
1 → 0
Special cases, The start of a part program selected in the channel by part program command START in another
errors, ...... channel (program coordination) is not prevented by the interface signal:
DB21, ... DBX7.0 (NC start disable) == 1.
Corresponds to .... DB21, ... DBX7.1 (NC START)
DB21, ...
DBX7.1 NC START
Edge evaluation: yes
Signal state 1 or AUTOMATIC mode: The selected NC program is started or continued, or the auxiliary functions that
edge change were saved during the program interruption are output.
0 → 1
If data are transferred from the PLC to the NC during program status "Program interrupted," then
these data are immediately cleared at NC start.
Operating mode MDA:
The entered block information or part program blocks are released for execution.
Signal state 0 or No effect.
edge change
1 → 0
Corresponds to .... DB21, ... DBX7.0 (NC start disable)
90
Signal(s) updated: cyclic
Signal(s) updated: cyclic
Signal(s) updated: cyclic
Basic logic functions: NC/PLC interface signals (Z1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0