Echelon LNS DDE Server - Manual (Page 45)

Format Files
This option generates a message each time a format file is opened. The full path of
the format file is included in the message. The server normally opens all registered
format files during startup.
Type Files
This option generates a message each time a type file is opened. The full path of the
type file is included in the message. The server normally opens all registered type
files during startup.
Format Errors
This option generates a message when a format error occurs. The message contains
information about the point in error, the internal name of the format file, the error
code, and in some cases the string that caused the error.
A formatting error occurs when the formatted or binary data contains invalid data.
The data is considered invalid when it does not conform to the constraints for the
data type of the point.
Format Use
This option generates one or two messages for each point (network variable,
configuration property, or field thereof), that is accessed by a client application.
The first message contains information about the point name, field name (if
applicable), format file, format specification handles, number of fields, and length (in
bytes). A second message will be generated if a type has been explicitly specified by
the client application by using the ‘-t’ option.
Format Search
This option generates a format search message when the server is unable to locate a
format specification. The server will print out the program ID of the device
containing the point (the point may be a network variable or configuration property),
the scope selector, index, and any explicitly assigned format specification as
registered in the LNS network database.
Network Server
Communication between the LNS DDE Server and the LNS network operating
system is handled by a separate process. This process is the LNS Network Server.
The LNS Network Server is started, stopped, and controlled by the LNS DDE Server
application. The LNS Network Server has no visible window.
LNS DDE Server User's Guide 3-13