Echelon i.LON SmartServer 2.0 - Manual (Page 209)

i.LON SmartServer 2.0 Programmer’s Reference 14-9
14.1.3.2 Issuing Network Scan Commands to Discover Devices
You can use the InvokeCmd function to discover all the uncommissioned devices on a L ON W ORKS
network. When you send this command, a message is broadcast to the devices on the network that
triggers the devices to identify themselves by their Neuron IDs.
The network scan automatically generates a Data Log named “/#DeviceDiscovery” that
includes entries for each uncommissioned device discovered by the network scan. Each entry includes
a Net/VirtCh/iLON System/VirtFb/LonDiscoveryMessage data point that is set to the program ID
and Neuron ID of a discovered device. You can periodically read the data log for uncommissioned
devices while the network scan is ongoing based on the log’s property, or you can
wait until the network scan has been completed to read the uncommissioned devices in the data log all
at once. See Processing Discovered Devices later in this section for more information.
Note: Section 21.1.6, Discovering and Installing External Devices in Visual C# .NET, includes a C#
programming example demonstrating how to discover and install uncommissioned L
ON W ORKS
devices. Section 21.2.6, Discovering and Installing External Devices in Visual Basic.NET, describes
how to do this in Visual Basic. Section 22.3.4, Discovering and Installing External Devices in JAVA,
describes how to do this in JAVA.
The following example demonstrates how to scan a L ON W ORKS network for uncommissioned devices:
Net
ScanOnce
xsi:type="string" LonFormat="UCPTstatus">STATUS_REQUEST
LonFormat="UCPTscan">NST_ILON_DOMAIN
The input parameters you supply to this function include one element with a
LON_Network_Scan_Command_Invoke xsi type and a LONNetworkEScanCommand attribute that is
set to “SetScan”. The element must include the of the network being scanned; a
that is set to “ScanOnce” to scan the network once; and a property
that is set to “NST_ILON_DOMAIN”. The following table lists the required properties of the
element.
Option Description
The name of the L ON W ORKS to be scanned for uncommissioned
devices.
A LONNetworkEScanCommand type that requires the
following two properties:
. The network scan command. Set this
property to ScanOnce, so that the SmartServer scans the
network once.
• . An E_LonString type that indicates the
status of the network scan command. When issuing a
network scan command, you must set this property to
STATUS_REQUEST.
This property may be one of the following values:
STATUS_REQUEST