Echelon OpenLNS - Manual (Page 60)

OpenLNS Programmer's Reference 23
added to the API.
Comments The parent object is determined by the means in which a
child object is accessed, not by the OpenLNS Object
hierarchy.
Selector
Summary The network variable selector value assigned to this network
variable alias.
When a device is installed, selector values that represent
unbound network variables are assigned to the network
variables in that device. When placing the network variable
in a connection, the OpenLNS Object Server assigns a value
representing that connection.
Availability Local, full, lightweight, and independent clients. Note that
some objects containing this property are not available to
Independent clients.
Syntax selectorValue = object.Selector
Element Description
object The Alias object to be acted on.
selectorValue The network variable selector value
Data Type Integer.
Read/Write Read only.
Added to API Prior to LNS Release 3.0.
Aliases
An Aliases object is a collection of Alias objects. The collection contains an Alias object for
each alias in-use for the parent network variable. Unused alias entries contained within an
application device's alias table will not appear in an Aliases collection.
The Aliases object is not updated as changes occur on the network, all property values are
cached on the OpenLNS Server when the object is created. As a result, an Aliases object
must be periodically refreshed by invoking the Refresh method, or by fetching a new Aliases
collection object from the parent NetworkVariable object. The following table summarizes the
Aliases object.
Description Represents a collection of Alias objects.
Added to API Prior to LNS Release 3.0.
Accessed Through NetworkVariable object .
Default Property Item property.
Methods • ItemByIndex
• Refresh
Properties • ClassID
• Count
• Item