Specifications

C-BUS TRAINING MANUAL - VOL 2
92
1.0 Network Bridges Introduction
The C-Bus
®
DIN Rail mounted Network Bridge, is a Network support device that provides a
communication channel between C-Bus units on separate Networks. This makes programming and
monitoring of C-Bus devices on remote Networks possible from a single point.
The Network Bridge consists of two identical halves, each needing to be individually programmed with
their own operating parameters.
The Network Bridge serves the following functions:
• Provides electrical isolation between adjacent Networks
• Allows messages to pass between Networks
• Provides a path for remote programming of units across Networks
• Provides a Network burden
• Provides a system clock for data transmission synchronisation.
The Network Bridge should be used under the following conditions:
• When the total current required to run the Network exceeds 2A
• When the number of C-Bus units exceeds 100 units
• When the total cable length in the installation exceeds 1000 metres
• When there is a requirement to provide separation between Networks, such as in the case
of a multi storey building where a Network Bridge is used between floors to provide
segregation.
A Network Bridge providing electrical isolation does not permit power transmission through the
device. Therefore separate power supplies are required on both sides of the bridge.