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C-Bus™ Basic Programming 1250SM0904R10/09
C-Bus™ Products Training Course 10/2009
48 © 2009 Schneider Electric. All Rights Reserved.
When using a daisy chain network topology, a maximum of seven C-Bus
Networks (6 Network Bridges) can be placed one after another.
The deeper you go into the chain of C-Bus networks, you will find that there
is more propagation delay when programming and sending commands. As
a result it is recommended not to make a network Daisy Chain more than
four C-Bus networks deep.
USB
C-Bus Toolkit
PC
Local Network
(254)
Remote Network 1
(253)
Remote Network 2
(252)
5500PCU 5500NB 5500NB
Figure 30 - Daisy chain network topology
A star network topology is when a number of C-Bus networks all connect
back to a single C-Bus network. Less than 100 C-Bus networks may be
connected to a single C-Bus network in a Star Network topology
(remembering that only 255 networks may be added to a single Toolkit
Project).
The C-Bus network that all other C-Bus networks connect to is commonly
referred to as a C-Bus Backbone network.
USB
C-Bus Toolkit
PC
Local Network
(254)
5500PCU
5500NB 5500NB 5500NB 5500NB
Remote
Network 1
(253)
Remote
Network 2
(252)
Remote
Network 3
(251)
Remote
Network 4
(250)
Figure 31 - Star network topology
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