Echelon OpenLNS - Manual (Page 760)

OpenLNS Programmer's Reference 723
This event is also fired each time the state of your client’s
NetworkServiceDevice changes from the online state to the
offline state, or vice versa. You could use this event to keep
track of when the NetworkServiceDevice is offline, as polling
is suspended, and monitor and control events will not be
delivered to your application, while the NetworkServiceDevice
is in the offline state. You can also check the state of the
NetworkServiceDevice by reading the State property of the
AppDevice object that represents the NetworkServiceDevice.
Syntax OnSessionChangeEvent (networkName, sessionState)
Element Description
networkName A String containing the name of the
network involved in the session.
sessionState The current status of the xDriver
session, or of the Network Service
Device.
The values that can be returned as
this element are as follows (these
values are stored in the
ConstSessionStates constant):
0 lcaSessionStateClosed
The xDriver session has been closed.
1 lcaSessionStateConnecting
The connection to the RNI device
involved in the session has been
lost, and xDriver is attempting to
reconnect to the RNI.
If xDriver is able to reestablish the
connection, the event will be fired
again with the
lcaSessionStateEstablished (2)
value as the sessionState element.
If xDriver is not able to reestablish
the connection, the event will be
fired again with the
lcaSessionStateFailed (3) value
as the sessionState element.
2 lcaSessionStateEstablished
xDriver has successfully
reestablished connection to the RNI
device in the connection, after
communication with the device was
lost.
3 lcaSessionStateFailed
Connection between your
application and the RNI device has