Index, Parent, Index p – Echelon OpenLNS User Manual
Page 59
OpenLNS Programmer's Reference
22
Comments
This property allows the object type to be determined when it
is unknown (for example, when the object was accessed using
the Parent property of another object).
Index
Summary
Returns the index within an application device of the
network variable alias.
Availability
Local, full, and lightweight clients.
Syntax
index = object.Index
Element
Description
object
The object to be acted on.
index
Index of the message tag or network
variable.
Valid Values
Property
Values
Message tags
0–14
Neuron-hosted
applications
0–62
Host-based
applications
0–8,191
msg_in
message tag
MSG_IN_TAG (-2)
Data Type
Integer.
Read/Write
Read only.
Added to API
Prior to LNS Release 3.0.
Parent
Summary
Returns the object that spawned the current child object.
Availability
Local, full, lightweight, and independent clients. Note that
some collection objects are not available to Independent
clients.
Syntax
parentObject = object.Parent
Element
Description
parentObject
The object that is the parent of the
specified object.
object
Any object for which the parent is
desired.
Data Type
Object.
Read/Write
Read only.
Added to API
Depends on the object used to access the property. Generally,
this property exists for an object as soon as the object is