Siemens SINUMERIK 840D sl Function Manual page 1626

Z1: NC/PLC interface signals
19.6 Mode group, channel, program operation, reset response (K1)
DB21, ...
DBX319.5 Repos DEFERAL Chan
Edge evaluation: No
Signal state 1 All axes currently controlled by this channel have either no REPOS offset or their REPOS offsets are
invalid.
Signal state 0 Miscellaneous.
Corresponding to ... DB31, ... DBX70.0 (Repos offset)
DB21, ...
DBB376 ProgEventDisplay
Edge evaluation: No
All bits == 0: There is no event-driven program call active
Meaning of individual bits:
Bit
5 - 7 Reserved, currently always 0
Signal state 1 The event assigned to the bit has activated the "Event-driven program call" function.
Signal state 0 The event assigned to the bit has not activated the "Event-driven program call" function or the event-
driven user program has expired or was canceled with RESET.
DB21, ...
DBX378.0 ASUB is active
Edge evaluation: No
Signal state 1 One ASUB is active.
Note:
The user gets a feedback on a running ASUB through DB21, ... DBX378.0 even outside FC9 block.
Signal state 0 No ASUB is active.
DB21, ...
DBX378.1 Still ASUB is active
Edge evaluation: No
Signal state 1 An ASUB with suppressed display updating (refer to MD20191 $MC_IGN_PROG_STATE_ASUP) is
active.
Signal state 0 No ASUB with suppressed display updating is active.
1626
Signal(s) updated: Cyclically
Signal(s) updated: Event-driven
Note: Signal duration of at least one complete PLC cycle
Meaning
0 Part program start from channel state "Reset"
1 Part program end
2 Operator panel reset
3 Startup
4 1st start after block search
Signal(s) updated: Event-driven
Signal(s) updated: Event-driven
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions