K1: Mode group, channel, program operation, reset response
9.9 Program operation mode
Basic Functions
580
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Figure 9-10
Signal chart during activation through operator panel reset
Display
The information about the triggering event is provided to the PLC via the NC/PLC interface byte DB21, ...
DBB376.
The global query of DB21, ... DBB376 on 0 enables the determination, whether an event-driven application
program is active at all.
If the event-driven application program has expired or has been interrupted with RESET, then the related display
bit is deleted in the interface. For a very brief program, the corresponding bit remains for at least the duration of a
complete PLC cycle.
Note
DB21, ... DBX35.4 ("Program status aborted") and DB21, ... DBX35.7 ("Channel status
reset") are only received if event-driven use program is complete. Between program end and
the start of the event-driven application program these states are not imported. This is also
the case between an operator panel reset and the start of the application program.
Bit
Value
Description
0
1
Part program start from the channel status reset
1
1
Part program end
2
1
Operator panel reset
3
1
Ramp-Up
4
1
1. Start after block search (see "Automatic start of an ASUB after a block search
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