Siemens SINUMERIK 840Di Function Manual page 632

Detailed Description
2.7 Program operation mode
Note
DB21, ... DBX35.4 ("Program status aborted") and DB21, ... DBX35.7 ("Channel status
reset") is are only received if _N_PROG_EVENT_SPF has been completed.
Neither DB21, ... DBX35.4 ("Program status aborted") nor DB21, ... DBX35.7 ("Channel
status aborted") are received between the program end and the start of the program event.
This is also the case between an operator panel reset and the start of the program event.
Special points to be noted
The following must be noted for user program _N_PROG_EVENT_SPF:
• It is run with the lowest priority and can, therefore, be interrupted by the user ASUB.
• The PLC can be advised of the processing status of _N_PROG_EVENT_SPF via user M
• The trigger event can be determined on the interface via the PLC program:
• _N_PROG_EVENT_SPF is always processed in the channel in which the corresponding
• Each time MD20108 $MC_PROG_EVENT_MASK is reconfigured,
• The display can be suppressed in the current block display using the DISPLOF attribute
• A single block stop can be disabled with SBLOF attribute command or via
2-96
functions.
DB2x.DBB376 provides the following information:
0 No active event
Bit 0 = 1 Part program start from channel status RESET
Bit 1 = 1 Part program end
Bit 2 = 1 Operator panel RESET
Bit 3 = 1 Power-up
Bit 4 = 1 First start after search
Bit 5-7 reserved, currently always 0
The general request to 0 makes it possible to determine whether any of the events is
present. If a running event disappears with RESET, the associated display bit is also
cleared in the interface.
When very short events occur, the corresponding bit remains active at least for the
duration of a complete PLC cycle.
event has occurred. By scanning MD20000 $MC_CHAN_NAME, it is possible to
determine in program _N_PROG_EVENT_SPF which channel is currently being
processed.
Note: Power-up is an event that takes place in all channels.
/_N_CMA_DIR/_N_PROG_EVENT_SPF must be loaded or enabled. Otherwise, the alarm
14011 "Program _N_PROG_EVENT_SPF does not exist or not enabled for execution" is
output.
in the PROC statement.
MD10702 $MN_IGNORE_SINGLEBLOCK_MASK with Bit 0.
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0