Programming - Siemens SINUMERIK 840D sl Function Manual

K1: Mode group, channel, program operation, reset response
9.9 Program operation
Note
The system variables $AC_STAT and $AC_PROG are not affected by this function, i.e. in the
running event-driven user program, $AC_STAT is set to "active" and $AC_PROG to "running".
NC/PLC interface signals DB21, ... DBX35.0-7 ("Program state ..." and "Channel state ...")
also remain unaffected.
Behavior for NC Stop
The behavior of the function "event-driven program call" for NC Stop (i.e. NC/PLC interface
signal DB21, ... DBX7.2, 7.3 or 7.4 is set) can be set channel-specific for the triggering event
part program end, operator panel reset and run-up with the machine data:
MD20193 $MC_PROG_EVENT_IGN_STOP
Bit
1
2
3
In this way, an edge change of the interface signal DB21, ... DBX7.3 (NC Stop) initiated by the
user by activating the NC Stop key in case of reset or power-up is ignored during the execution
of the event-driven user program and an undesired stop behavior at the machine is prevented.
Note
A programming of DELAYFSTON/ DELAYFSTOF in the event-driven user program cannot be
provided with the behavior set with MD20193, because the NC Stop can cause an interruption
before the execution of the first command DELAYFSTON.
9.9.12.3

Programming

User program
End of program
552
Value Meaning
The event-driven user program is:
● After an activation through part program end:
0 Stopped/prevented at NC stop
1 Despite NC Stop been completely processed
● After an activation through operator panel reset:
0 Stopped/prevented at NC stop
1 Despite NC Stop been completely processed
● After an activation through run-up:
0 Stopped/prevented at NC stop
1 Despite NC Stop been completely processed
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions