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1B. C-Bus Concepts

1.8 C-Bus Clock

At least one clock must be enabled on the C-Bus Network. In the absence of a C-Bus clock, no

communication will be transmitted along C-Bus.

Note: This is not a real time clock, but a means by which communication is

synchronised.

There will only ever be one active clock on the C-Bus network, however it is recommended to have

multiple system clock generating units available for a redundant system. If multiple system clock

generators are available (enabled), the network will determine which unit will have the active clock.

IMPORTANT Where possible, avoid enabling a C-Bus clock on a network bridge or network

interface.

Figure 6 shows a single C-Bus Clock pulse viewed through a Cathode Ray Oscilloscope.

Figure 6 – A single C-Bus clock pulse viewed through a Cathode Ray Oscilloscope

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Clipsal C-Bus Spezifikationen Seite 39