Echelon LNS - Manual (Page 201)

LNS Programmer's Guide 187
network variable they apply to. For example, configuration properties for default,
minimum, or maximum values are often defined as to be of an inheriting type. Such
configuration properties will also change their data type if the type of the changeable
type network variable changes, and the related data formatting may change.
To control all these issues with minimum error, Echelon recommends that integrators
only use device-specific plug-in software to change network variable types, and that you
design your LNS application with these implications in mind.
If you design a generic LNS application that may be used to configure or install any
arbitrary device type, Echelon recommends that you implement LNS director
functionality in your application. An LNS director application can detect and use plug-in
software, and can therefore delegate the delicate task of network variable type changes
(and similar delicate device configuration tasks) to specialized plug-in software. See
Chapter 12 of this document for more information on LNS director applications.