Echelon LONWORKS, User Manual, Page: 8 / 68

L
ON
W
ORKS
Router User’s Guide 1-3
Packaged routers, FCC- and VDE-certified to comply with conducted and
radiated emissions specifications and UL-certified for safety, with optional
wall-mount power supplies, are also available from Echelon. These eliminate
the need to build hardware and obtain the necessary electrical interference and
safety certifications. Thus, they allow direct, off-the-shelf integration into the
user's L
ON
W
ORKS
network.
RTR-10 Router Core Module
Side A
Transceiver
Side B
Transceiver
Service Button/LEDs
Side A Network
Connector
Side B Network
Connector
Power
Supply
Figure 1.2 Router Assembly Using the Router Core Module
• Routing Algorithm . Routers can use one of four routing algorithms: configured router ,
learning router , bridge , or repeater . These options allow system performance to be
traded for ease of installation. Configured and learning routers fall into a class of
routers referred to as
intelligent routers , which use routing intelligence to
selectively forward messages based on the destination address. A bridge forwards
all packets that match its domain(s). A repeater forwards all valid packets.
A network services tool such as the LonMaker Installation Tool is used to select the
routing algorithm and calculate network topology as well as layer 4 timing
parameters. Both sides of a router must use the same algorithm. LonBuilder
®
,
LonMaker, or a tool based on the LonManager API is required to install a configured
router.