Address Allocation; How Addresses Are Allocated To Devices; Address Allocation From Loop End 1; Address Allocation From Loop End 2 - Honeywell GENT Nano panel-based Commissioning Instructions

Address allocation

1 2
Main
loop
circuit
LOOP
END 1
28 27
Note: The End 2 connection is
Cancel Sound Silence not made at this stage of commissioning
Buzzer Reset Alarms Alarms
Disablement
Test Delay Verify
System Fault Power Fault Sounder Fault Disablement Sounder
Zone 1 Zone 2 Zone 3 Zone 4
Zone 7 Zone 8
Zone 5 Zone 6
Zone 9 Zone 10 Zone 11 Zone 12
Zone 16
Zone 13 Zone 14 Zone 15
FAULT POWER FIRE
by Honeywell
042bc EN54 Parts 2 & 4
PANEL

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.
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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.
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The new map is checked against the last map held in the Flash memory, if
found to be different then a message is displayed.
4188-949 issue 3_05/10_Nano Comms inst.
3 4 9 10
Spur on main loop
5 6 7 8
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Spur
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on
main
loop
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26 20 19 18 17

Address allocation from Loop END 1

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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.
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If the address allocation reaches the last device then the panel will show 'Wiring open
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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.
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Even if all the devices are wired correctly, there may still be other device faults, like
13 mains and battery disconnected at a mains powered interface unit. The panel fault
buzzer will sound and the Fault LED will be lit.
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To stop the local buzzer from sounding, press the Cancel Buzzer button. You may
need to enter an access code if at level 1.
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Refer to 'Appendix A - Message action list' for information on the displayed
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fault(s) and possible action to rectify the fault(s), see page 72.

Address allocation from Loop End 2

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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

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The device with a hardware fault may have its LED lit.
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An allocation fault that has been rectified will not be recognised until after
re-allocation of the loop.
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Allocation faults will not be able to distinguish between a point type sensor and a call
point.
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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

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A loop is started after allocation, each device is set up to start operating normally
based on device type, when analogue channels are read.
Nano panel based system
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