Echelon LNS - Manual (Page 78)

LNS Programmer's Guide 64
management mode is set to lcaMgmtModePropagateConfigUpdates,
all device configuration changes are immediately propagated to the
network.
Note that the system management mode is global, and affects all clients
currently attached to the system. For more information on the system
management mode, see System Management Mode Considerations on
page 97.
MySystem.MgmtMode = lcaMgmtModePropagateConfigUpdates
2. DiscoveryInterval Property. If the shared media option was not
selected when the system was opened, set the discovery interval. The
discovery interval specifies the rate, in seconds, at which the LNS Object
Server will scan the network for unconfigured devices that have been
attached to the network. The default setting for this property is 180 if the
InstallOptions property is set to lcaPrivateMedia, and 0 if the
InstallOptions property is set to lcaSharedMedia. The setting may
have been changed by another LNS application if you are opening an
existing network.
Setting the interval to 0 disables discovery. You should set this property
to 0 unless the control network is expected to be highly dynamic, and
your LNS application is programmed to respond to the automatic
registration of new devices.
Because this property affects all current and future clients accessing this
network, Echelon recommends that you specify an appropriate discovery
interval only when you create the network and open the System for the
first time.
ActiveSystem.DiscoveryInterval = 600
3. UpdateInterval Property. This property determines how often the LNS
Object Server will try to complete operations such as device
commissioning that occurred as a result of a device update failure. A
device update failure occurs when a transaction has been completed and
committed to the LNS database, but LNS is unable to load the
information into the physical device due to some error. The default value
for this property is 120 seconds. Note that you can force the LNS Object
Server to complete such operations at any time by calling the
RetryUpdates() method on the System object. Setting this property to
0 disables automatic retries, and requires explicit calls to the
RetryUpdates() method.
MySystem.UpdateInterval = 240
Because this property affects all current and future clients accessing this
network, Echelon recommends that you specify an appropriate update
interval only when you create the network and open the System the first
time. It is recommended to set this property to 0 only when you require
explicit control of bandwidth usage in low-bandwidth networks.
Steps 1 through 3 list several key properties of the System object that you need to set
when initializing your application, but there are many others you should consider as you
program your application. You should also note that many properties of the System