As PSP Container
Returns a reference to the PSP Variable as a PSP Container. Because some variable objects, such as network-published I/O Variables, function as both PSP Variables and PSP Containers, you might need to use the As PSP Variable and As PSP Container properties to refer to the same variable object both as a PSP Variable and as a PSP Container.
Connection:Buffer Size in Elements
Returns the size, in number of elements, of the PSP client-side buffer.
Connection:Connected
Returns TRUE if the referenced PSP variable has established a network connection. Returns FALSE if the PSP variable has not established a network connection or there is a network disruption. Use this property to determine whether the Open Variable Connection in Background function successfully opens a connection to a shared variable.
Connection:Elements in Read Buffer
Returns the number of unread elements in the client-side read buffer.
Connection:Quality
Returns an array of error clusters for the referenced PSP variables.

LabVIEW Programming Reference Manual