Siemens Sinumerik 840D sl Function Manual page 73

05.07
Changing link administrative data
Authorized users (administrators) are authorized to define links in configuration
mode. Authorization to configure machine data must be assigned to these users
(see also: Chapter 5 - User administration).
When you choose Edit, you can enter a drive or path for a link directly in the MCF.
When you choose "Config. dialog", you can select a drive in the file system or enter
a UNC path in the screen. This means that DNC can now access these files.
Note
Files that are made visible via a link, do not have a database reference.
DNC cannot navigate in any subdirectories of the link that may be available. Only
the files that are located directly under the link node can be accessed.
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Motion Control Information System DNC (FBDN) - 04/10 Edition
DNC Plant/DNC Cell (FBDN1)
4 NC data management
FBDN1/4-65