BrightSign Object Reference Manual (FW 5.1) - Manual (Page 224)

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roNetworkHotplug
This object can be used to generate events when a network interface becomes available or unavailable. It will post events
of the type
roNetworkAttached and roNetworkDetached to the associated message port.
Note: Reconfiguring a network interface using roNetworkConfiguration may cause it to detach and attach again.
To determine which network was attached or detached, the script needs to call roNetworkAttached.GetInt or
roNetworkDetached.GetInt. These methods provide an index of the network interface that was attached or detached.
Interfaces: ifSetMessagePort
The ifSetMessagePort interface provides the following:
• SetPort(a As Object)