Siemens Sinumerik 840D sl Function Manual page 52

DNC Plant/DNC Cell (FBDN1)
3 Operator interface
If you make entries in several of these fields, it is possible that nobody will be able
to use this filter because the information you have entered is inconsistent. For this
reason, the Display group, Station, and User name fields can be deactivated by the
administrator. In this case, the ASSIGNEDFILTER=0 parameter in the
DNCGLOBALSETTINGS database table must be set.
Note
It is important to note here that existing filters that are assigned to particular
display groups, stations or users and that are to be modified in "inactive" mode
are displayed without the assigned display groups, stations or user names. The
old assignments are deleted when you save the filter. If you exit the dialog with
Cancel, the old assignments are retained.
Confirming the filter with OK opens the Select Filter dialog again. The new filter
must be selected and confirmed there in order to add the filter criteria.
FBDN1/3-44
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Motion Control Information System DNC (FBDN) - 04/10 Edition
05.07