Address allocation
How addresses are allocated to devices
Each device that is connected to the loop circuit is allocated an address (a soft address). The first
device is given address 1 and the next one is given address 2 and so on.
¨
The allocation of addresses starts from one End of a loop circuit in a numerical order.
If both ends of the loop are connected then the allocation of addresses starts from
End-1. On reaching a T-breaker the spur circuit off the main loop is allocated with
addresses. On completion the process continues along the main loop.
"
The new map is checked against the last map held in the Flash memory, if
found to be different then a message is displayed
.
Address allocation from Loop END 1
¨
You will see the 'powering up' messages which tells you the progress of address
allocation and the number of devices found and the last device on the loop.
¨
If the address allocation reaches the last device then the panel will show 'Wiring open
circuit' fault as End 2 is not connected to the panel and also there will be a 'Backup
required' reminder. Ignore the reminder at this stage of commissioning.
¨
Even if all the devices are wired correctly, there may still be other device faults, like
mains and battery disconnected at a mains powered interface unit. The panel
fault
buzzer
will sound and the Fault LED will be lit.
¨
To stop the local buzzer from sounding, press the
Cancel Buzzer
button. You may
need to enter an access code if at level 1.
"
Refer to 'Appendix A - Message action list' for information on the displayed
fault(s) and possible action to rectify the fault(s), see page 72.
Address allocation from Loop End 2
Manually
Power-Down
the loop and disconnect Loop at End-1 and connect Loop at End-2 to
check address allocation works from Loop End 2.
Power-Up
the loop. On successful allocation of
addresses
Power-Down
the loop and then connect both ends of the loop and then
Power-up
the
loop. Upon successful allocation of addresses to all devices on the loop you can
Start Detection.
Allocation faults
¨
The device with a hardware fault may have its LED lit.
¨
An
allocation fault
that has been rectified will not be recognised until after
re-allocation of the loop.
¨
Allocation faults
will not be able to distinguish between a point type sensor and a call
point.
¨
When a short circuit fault is found, the loop re-allocates to the device before the short
circuit. The device loop breaker remains open and the device LED is lit.
Start Up
¨
A loop is started after allocation, each device is set up to start operating normally
based on device type, when analogue channels are read.
4188-949 issue 3_05/10_Nano Comms inst.
23
Nano panel based system
Address
allocation
by Honeywell
POWER
FAULT
FIRE
Test
Delay
Verify
Sounder Fault
Zone 2
Zone 6
Zone 10
Zone 14
Zone 3
Zone 7
Zone 11
Zone 15
Zone 4
Zone 8
Zone 12
Zone 16
Disablement
Zone 1
Zone 5
Zone 9
Zone 13
System Fault
Sound
Alarms
Silence
Alarms
Power Fault
Reset
Cancel
Buzzer
Sounder
Disablement
042bc
EN54 Parts 2 & 4
1
2
3
4
9
10
11
12
5
6
7
8
13
22
23
24
25
14
21
15
28
27
26
20
19
18
17
16
PANEL
Main
loop
circuit
Spur on main loop
LOOP
END 1
Note: The End 2 connection is
not made at this stage of commissioning
Spur
on
main
loop