4 Operability
Field Xpert
20
Hauser
4.4.2
Power/batteries
The FFblue modem takes the power for the communication interface from the FOUNDATION
fieldbus H1 segment to which it is connected. The modem switches on automatically when a
voltage is detected across its terminals.
The Bluetooth transmitter, however, requires two AA alkaline batteries, which are included in the
scope of delivery. Insert them into the Bluetooth modem, making sure that the polarities are correct.
Replace the lid and secure the battery compartment by tightening the screw.
4.4.3
LED status
The FFblue modem has two LEDs which indicate the state of communication and battery status.
Their significance is shown in the table below.
LED combinations
Status LED
Traffic LED Significance
Remarks
on, red
on, red
Power on
Indicates start up of FFblue
on, red
on, red
Flash CRC error,
SW Exception
If red, red persists:
No runnable firmware is available or a fatal error situation
has been detected in the FFblue modem firmware.
on, green
on, red
Bluetooth in power down
mode
This state is assumed after 5 minutes, if no active Bluetooth
connection is available, in order to save the battery. It is
necessary to powercycle the FFblue modem to swich on
the Bluetooth again (disconnect/reconnect terminal)
Battery OK
on, green
off
Bluetooth ON but no
connection
Bluetooth module is switched on, wait for serial connection
on, green
on, blue
Bluetooth active(connected)
Serial connection with FFblue modem is established, but no
traffic
on, green
flashing, blue Bluetooth traffic
Serial connection with FFblue modem is established, serial
messages are being transferred.
Note that in order to save Bluetooth battery the traffic LED
is switched on only 20% of the blink interval
0.5 Hz, green according to
Bluetooth
connection
state
Acting as H1 Linkmaster
Indicates that device is in the token ring, but not as LAS
and battery state is OK.
The traffic LED is displayed as indicated above when
battery state is OK.
5 Hz, green
according to
Bluetooth
connection
state
Acting as H1 LAS
Indicates that device is in the token ring, acts as LAS and
battery state is OK.
The traffic LED is displayed as indicated above when
battery state is Battery state OK.
Battery Low
1 Hz, red
on, red
Bluetooth in power down
mode
Operation would be possible, but powercycle of modem is
necessary to switch on Bluetooth module (disconnect/
connect terminal)
1 Hz, red
off
Bluetooth ON, but no active
connection
Bluetooth module is switched on, wait for serial connection
1 Hz, red
on, blue
Bluetooth active (connected)
Serial connection with FFblue modem is established, but no
traffic
1 Hz, red
1 Hz, blue
Bluetooth traffic
H1 bus status not indicated as information about battery
state is more important
Battery Empty
red
off
Battery empty
Bluetooth interface cannot be used
