Coactive Aesthetics ROUTER-LL, Руководство пользователя

Страница: 13 / 30

12
The message buffer configurations for both sides of the ROUTER-LL
should be the same.
ROUTER-LLs are delivered from the factory with their buffers configured
as described in Appendix C: Factory Setting.
Special Note for LonBuilder Users : LonBuilder simplifies the configura-
tion of message buffers into two user defined parameters:
Packet
Buffers
and
Size. Size
sets the size of the Input Network, Output
Network, and Priority Output Network Buffers.
Packet Buffers
sets
the Output Network Buffer count. The Input Network and Priority Out-
put Network Buffer counts are always set to 2.
Routing Algorithm
The ROUTER-LL can use one of four routing algorithms: configured router,
learning router, bridge, or repeater. See the LonWorks Router User’s Guide for
a complete discussion of the different algorithms. ROUTER-LLs are deliv-
ered from the factory configured as repeaters.
Installation
When a network services tool installs a router, it calculates the timing
parameters for messages sent through that router. These parameters are
calculated based on the communications parameters of the router’s trans-
ceivers. Unfortunately, the standard algorithm used by the network ser-
vices tool incorrectly calculates these timing parameters for the ROUTER-
LL (because of the propagation delay introduced by the IP network, the
required values for the communications parameters are out of range for
the algorithm). To correct for this problem, the ROUTER-LL requires a
two-step installation process:
• The first step installs communications parameters that allow the net-
work services tool to correctly calculate the message timing.
• The second step installs communications parameters required to opti-
mize ROUTER-LL performance. This step is performed by the
RTR_CFG.EXE
tool.
The procedure for installing a network that contains ROUTER-LLs is as
follows:
• Connect the ROUTER-LL to your LonWorks network using the RJ-45
LONTALK
connector.
• Install all nodes and routers as usual using a network services tool.
The preceding sections and the Appendices of this manual contain
detailed data and instructions that are specific to the ROUTER-LL.