When a network DDE Client user connects to a
network DDE Share from a remote computer, Network DDE accepts the
request only if both:
The user who created the share
has granted trusted status to the share.
The user who created the share is
currently logged on to the server computer.
To link to the CitectSCADA tag database, and permit
write actions from an external application using Network DDE, the
DDE Client computer needs to be granted appropriate Trusted
To create a trusted share:
On the DDE Shares dialog,
highlight the new 'Citect$' share entry, and click Trust Share to display the Trusted Share Properties
to Application Enable to allow new connections to the DDE
To view the trusted shares:
In the DDESHARE utility
double-click the right icon (with the check mark) to display the
DDE Trusted Shares dialog.
The DDE Trusted Shares dialog
lists the DDE shares that are trusted in the current user's
context. You can view and modify trusted share properties and
remove DDE shares from the list of trusted shares.
Once setup is completed, close
the DDE Share utility dialog box.