The System Bus
i-on Range
Page 24
Other Radio Device Addressing
For radio keypads, radio sirens and WAMs, during the learning process the
installer selects a specific radio expander to learn the identity of the radio
device. This means that when programming these devices the control unit
refers to them by a number containing three groups of characters (similar to
the characters the system uses to refer to zones and outputs):
Rn-dd-zz
Rn-dd The first two groups are the address of the bus device (see page 21).
The ―R‖ indicate that the device is a radio expander.
zz =
The last group is the radio device number.
Radio Device Numbering
When reporting alarms to an ARC using CID or SIA protocols the control unit
reports each device as a number (not as an address). Each type of device has
its own numbering range:
Radio Siren
Ext.01 to Ext.20
WAMs
WAM01 to WAM20
Note that the highest number will depend on the control unit.
Other Devices Connected to the Control Unit
Other devices connected directly to the control unit use a simpler addressing
scheme:
Sirens/Strobe
―Siren‖ and ―Strobe‖
Loudspeakers
01 and 02 (01 only for i-on30EX and i-on50)
Plug-by Outputs
01 to 16 (1 to 12 for i-on30EX and i-on50).
Bus Scanning and Re-configuring
The control unit keeps an internal list of every bus device that it has learned.
In order to keep the list up to date the control unit carries out two functions:
bus scan
and bus
re-configure
.
During a
bus scan
the control unit asks every device on the bus to report its
bus address. The control unit compares the addresses reported with the
addresses that it has stored in its list. If a device has a default bus address the
control unit ignores it.
Bus scanning takes place during power up and when the installer leaves the
Installer Menu.
If the devices reporting to the control unit do not match the stored list of
devices, then the control unit offers to
re-configure
the bus. If there are
additional devices on the bus then the control unit will add those to the list of
devices that it knows about. If there are fewer items on the bus than on the
list, then the control unit will remove those missing devices from its list.
The control unit re-configures the bus while it is still in the Installer Menu.
When the control unit leaves Installer Menu it stores the changed bus device
list in non-volatile memory (nvm).
Содержание i-On 40
Страница 1: ......
Страница 10: ...i on Range Page x This page is intentionally blank...