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1A. Introduction to C-Bus

10.0 Address Structure

Several types of addresses are used when communicating with C-Bus units. These are described

in Table 3.

Network Address Identiﬁes each network. Network Addresses range from 000 to 254

(255 is reserved).

Unit Address Identiﬁes each individual unit on a C-Bus network. Unit Addresses

range from 000 to 254 (255 means undeﬁned).

Application Address

An Application Address is used with a Group Address and Area

Address to deﬁne which input(s) will control which output(s). The

default Application Address is “lighting”. The programmer can specify

up to 255 different Applications, but some Application Addresses

have been reserved for speciﬁc command types.Using a combination

of Application Address and Group or Area Address gives thousands

of unique combinations.

Group Address This is used together with an Application Address to provide an

association between C-Bus inputs and outputs. Up to 255 different

Group Addresses may be used on any one Application Address.

Area Address This is a Group Address entered into a special Area Address ﬁeld on

a C-Bus output. It is similar in action to the Group Address except

that it can be entered into one or more C-Bus relays and/or C-Bus

dimmers to give master control of all of the channels on those relays

or dimmers.

Level or Selector This is a value of a Group Address. A Level is most often used to set

a light to a speciﬁc level. A Selector is generally used to trigger a

speciﬁc scene or select a Schedule. The value of a Level or Selector

ranges from 000 to 255.

Table 3 – Types of addresses used when communicating with C-Bus units

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 63 64

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