Echelon LNS DDE Server - Manual (Page 43)

DDE Toolkit
This section of the trace options concerns the interaction between the LNS DDE
Server and the Wonderware I/O Server Toolkit (formerly the Wonderware DDE
Server toolkit), which is the component of the LNS DDE Server that handles the
DDE messaging between the client applications and the DDE Server. Many of these
trace options produce output that is difficult to interpret without knowledge of the
Wonderware I/O Server toolkit API. Some of the options produce a significant
amount of output and should be enabled only when absolutely necessary.
Client Connection
This option generates a trace message once for each unique topic that is opened. The
message contains information about the topic name and the names used internally be
the server to identify this topic. If more than one client application connects to the
same topic, only the first connection will generate a message.
Client Disconnection
This option generates a message whenever the LNS DDE Server closes a topic. The
message contains the internal name.
Point Creation
This option generates a message containing the internal names of the topic and its
point, the item name string, and the type of data (discrete, integer, real, or string)
LNS DDE Server User's Guide 3-11