Honeywell Q7055A - Manual (Page 23)

BUILDING NETWORK ADAPTER BNA-1C/2CS/2DN
EN1B-0198GE51 R0801 23
6 BNA Bootloader
This chapter describes the functions of the BNA
Bootloader software. Each BNA device is equipped
with a Bootloader, which functions in the same way
for all BNA device types.
Note: BNA Devices are not equipped with any
application firmware. This must be loaded into
the device prior to using it.
6.1 Startup Behavior
After resetting or power-on the BNA device, all
LEDs on the front will be switched on. Immediately
after that, the BNA Bootloader starts working.
When the BNA Bootloader is active, the heartbeat
LED on the BNA front panel flashes
RED .
In contrast, any running application firmware
indicates its execution with a
GREEN flashing
heartbeat LED.
The Flowchart depicted in Figure 6-1 explains the
BNA execution sequence. It is necessary that the
user understand this in order to be able to react to
or influence the behavior of the BNA device.
Furthermore, it helps understanding in which state
the device currently is while looking at the LEDs on
the front panel of the BNA.