Echelon LNS - Manual (Page 76)

LNS Programmer's Guide 62
3. If the System is being opened for the first time and can share media with
other independently managed systems, configure the system to use
shared media by setting the InstallOptions property to
lcaSharedMedia. The default for this property is private media
(lcaPrivateMedia). The shared media setting is typically required for
systems with power line, RF, or L
ON
W
ORKS
/IP channels.
Setting the InstallOptions property after you have initially
opened a system has no effect. You can only set this property
with a Local client application before opening the system for the
first time. You cannot set this property with a remote client
application.
When the lcaSharedMedia option is specified, the LNS ObjectServer
assigns a unique 6-byte value to the DomainId property that is based on
the Neuron ID of the Network Service Device that the LNS Server is
using. It also disables background discovery by setting the
DiscoveryInterval property to zero, disables background device-
pinging, and disables automatic registration of devices when service pin
messages are received. This is to avoid registering devices from other
systems. For more information on shared media, see Using Shared Media
on page 167.
MySystem.InstallOptions = lcaPrivateMedia
4. If the system is being opened for the first time and you are not using
shared media, set the system’s domain ID. Domain IDs can be 1, 3, or 6
bytes in length and are represented using 2 hexadecimal characters per
byte. If shared media was not selected and no domain ID is specified, the
LNS Object Server will set the domain ID length to 1 byte and the value
to 01. The following code shows a 3-byte domain ID.
MySystem.DomainId = "32A0CF"
NOTE: You can change the domain ID after opening the system. If you
plan on using the engineered mode installation scenario described in
Chapter 5 of this document, you do not need to set the domain ID until
the commissioning stage. This allows a single database to be defined that
is commissioned with many systems, each with a different domain ID.