Siemens Sinumerik 840D sl Function Manual page 237

05.07
Deleting display groups
You can delete the complete list display in all languages for this display group by
choosing Delete.
!
Caution
Before you delete a display group, make sure that it is not being used by any
users or machines (see also: Dialog function) !
The list description for the DELLIST display group is essential for DNC IFC
SINUMERIK. Do not delete the DELLIST display group if you want to use DNC
IFC SINUMERIK.
The GLOBAL list description is used for the generic filter. If you delete this list
description, the list description of the respective user currently active takes effect.
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Motion Control Information System DNC (FBDN) - 04/10 Edition
DNC Plant/DNC Cell (FBDN1)
10 Configuration
FBDN1/10-229