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Chapter 4: Addressing and Zone
Numbering
This chapter explains how the control unit assigns addresses, such as to bus devices,
outputs, detectors. It also explains how the control unit maps zone numbers to detectors.
Bus device addresses
The control unit keeps a record of the address it allocates to each device on the bus. Each
device also stores its address locally in non-volatile memory.
The address of each bus device is in the format An-dd (e.g. W1-03), where:
A =
One or more letters showing the device type: K=keypad, W=Wired Expander,
R=Radio Expander.
n =
Bus number (always 1).
dd =
Bus device number. Keypads have bus device numbers in the range 51 to 97.
Expanders and other bus devices can have the following bus device numbers:
i-on30R: 03 to 50
i-on40H: 04 to 50
The maximum number of devices on the bus is shown in Table 1 on page 2.
Figure 6 shows an example of bus device addressing.
Figure 6. Bus Device Addressing Example
Note:
An EXP-R30 expander takes three consecutive bus device numbers. In the Installer
menu, the display shows only the first of these two/three addresses (e.g.
“R1-04”), but also
adds “(R30)” as a reminder.
Bus device address for devices that communicate through
a radio expander
For devices such as sounders and WAMs that communicate through a radio expander,
you select a specific radio expander to learn the identity of the radio device. The control
unit refers to these devices in the form Rn-dd-zz (e.g. R1-06-01), where:
R =
Fixed text to show that the device communicates through a radio expander.
n =
The bus number of the radio expander (always 1).
dd =
The bus device number of the radio expander (see above).
zz =
Radio device number, starting from 01.
