Technical information

TECHNICAL INFORMATION
206
C-Bus Design Guide
4 Speciying Large Installations
Multi-Network Installations
The C-Bus system has been designed for a maximum number of 100 Units on each
Network. When an installation requires control exceeding this number then Networks
may be interconnected with the use of C-Bus Network Bridges or C-Bus Ethernet
Network Interfaces.
Procedures and Design
The design process and procedures are the same as previously discussed. Each Network
and its operation needs to be dened separately. By partitioning the design, sub-systems
can be dened and programmed in a systematic process. The way in which the Networks
are interconnected is called the Network Topology. When using Bridges, it is recommended
that attempt be made to minimise the ‘depth’ of the Network Topology. Minimizing
the depth ensures faster communications between the Local Network and Remote
Networks. It is further suggested that in such applications the Local Network functions
purely as a ‘Backbone Network’, servicing all other Networks, with no active Input or
Output elements ie, the Local Network consists of the; PC Interface, Power Supplies,
and Network Bridges.
C-Bus Network Interfaces can also be used when large systems are required. The C-Bus
Network Interface is a 10-Base T Ethernet compliant device. This allows a C-Bus
network to be connected to an Ethernet network. In this approach each C-Bus network
is treated as a separate network and the only limitations to system design are PC
hardware resources (memory) and network bandwidth, dependent on the response
times required. For large systems where central control with real time response is
required, the C-Bus Ethernet Network Interface approach is recommended.
01 02 03 04
00
01 02 03 04
Local
Network 1 Network 2 Network 3 Network 4
C-Bus Network Bridge Interface Architecture
240VAC
C-Bus Network / 1000 Meters / 100 Devices C-Bus Network / 1000 Meters / 100 Devices
Network Bridge
5500NB
240VAC 240VAC
Power Supply
5500PS
4 Channel Voltage
Free Relay (Learn)
L5504RVF
240VAC 240VAC
Power Supply
5500PS
4 Channel Voltage
Free Relay (Learn)
L5504RVF
Neo Key
Input (Learn)
E5058NL
PC Interface
5500PC
RS232
Neo Key
Input (Learn)
E5058NL
Software Required
Windows™ 98SE, XP, ME, 2000
C-Bus Toolkit Software
5000S/3