Black Box GEH-6510 - Manual (Page 28)

24 •••• Chapter Three - Getting Started DDE Server User’s Guide
in the Devices for Display list at the left. Simply click on a register group to select it
for display. Clicking on a selected group deselects it.
You’ve completed configuring the PMCS DDE Server, started its operations, and are
viewing some data on the screen. You should now be conversant with the Server’s
major menu items. You can minimize the application and let it run in the background;
the DDE Server should require no interaction once it is properly configured.
For more advanced use, study Chapter 4, Menus and Toolbars, which goes into detail
on each menu and all available options.
NetDDE Setup
PMCS requires NetDDE to be able to share information with other PC’s. NetDDE
extends the DDE data-sharing capabilities to allow a client application on one
machine to request data from a server on another machine across a local-area
network. These remote client machines are also referred to as “View Nodes,” and
must also be equipped with Windows 2000 SP2 and NetDDE. If you will not be
accessing the PMCS DDE Server across the network, you do not need to read this
section.
Whenever data is being shared over a local-area network, it is a good idea to have
some security method to control access to the data. Windows 2000 SP2 controls
unauthorized access to information with a system of “shares” and “trusts”, which
define access to particular applications and topics. A “share” defines an application
and its topics to be available for DDE access over the network. “Trusting” the share
authorizes networked users to access the share; for example, User A trusts (allows
access to) Share X, which permits User B’s and User C’s clients on other machines to
access data from Application Z, Topics 1–10. A share must be created for each
application that may be accessed over the network, and the user of the host PC must