Q7055C BUILDING NETWORK ADAPTERS BNA-1C/2CS
7
95-7735
OPERATION
Location of Parts and Controls
Refer to Figures 11 and 12 and the following descriptions for
the location and function of parts and controls.
Fig. 11. Parts and controls on front side of BNA.
1—RESET
Hardware reset button. Located directly behind the small hole
in the front panel. To reach this button, a pointed object like a
sharp pen or an unfolded paper clip is necessary. Pressing
this button resets the BNA device immediately. This operation
is similar to applying power to the BNA device. The sequence
of operations following the RESET is similar to Power on BNA
device.
2—POWER
Power indicator. This LED lights up when power is connected
to the BNA device.
3—HEARTBEAT
System Heartbeat display consists of two LEDs, one Red and
one Green. During BNA system startup when BIOS is running,
both LEDs flash continuously. When BNA Bootloader starts to
run, the Red LED starts to flash. When the application
firmware begins to run, the Green LED starts flashing.
4—CH1
Bus Channel 1 activity display. This display contains two
green LEDs; one showing the BNA receive activity (Rx), and
the other showing the BNA transmit activity (Tx).
5—CH2
Bus Channel 2 activity display. This display contains two
green LEDs; one showing the BNA receive activity (Rx), and
the other showing the BNA transmit activity (Tx).
NOTE:
Ch2 indication is only available on two channel
devices. It is not available on the BNA-1C.
6—MODE
Mode switch button. This button is used to change the
operating modes. For a detailed description about BNA
operation modes, refer to the Operating Modes section of
form no. 74-4047, Q7055C Building Network Adapter BNA-
1C/2CS Checkout & Test.
7—LAN
Local Area Network (LAN) activity display. Shows the actual
LAN traffic status using three LEDs:
—
10LNK
. Ethernet speed of 10 mbps indicator (Green). If
this LED is lit, then the Ethernet link is operating at 10
mbps.
—
100LNK
. Ethernet speed of 100 mbps indicator (Green). If
this LED is lit, then the Ethernet link is operating at 100
mbps.
—
Activity
. Link activity indicator (Green) will blink if there is
any activity (transmission/reception) on the LAN.
Fig. 12. Parts and controls on rear side of BNA.
8—CH2
2-pin connector for field bus channel 2 connection, electrically
isolated, meets EMC and FCC requirements.
Field Bus wiring is described in the Field Bus Connection
(Ch1/Ch2) section.
NOTE:
The Ch2 field bus connector is only available on two-
channel devices. It is not available on the BNA-1C.
9—CH1/CH2 BUS TERMINATION SWITCHES
These switches are used to select field bus termination and
biasing. For a detailed description of the bus termination
switch positions, refer to the Bus Termination Switch section
of form no. 74-4047, Q7055C Building Network Adapter BNA-
1C/2CS Checkout & Test.
NOTE:
The Bus Termination Switch option near the Ch2
field bus connector is only available on BNA-2CS
two-channel devices. It is not available on the BNA-
1C.
10—CH1
2-pin connector for field bus channel 1 connection, electrically
isolated, meets EMC and FCC requirements. Field Bus wiring
is described in the Field Bus Connection (Ch1/Ch2) section.
11—AC/DC IN 24V
Power connector for 24 VAC (50 Hz to 60 Hz) or 24 VDC
power supplies and chassis ground
. An external power
supply is required. See the Power Connection section of this
document for details.
12—RS-232
9-pin SUB-D male RS-232 connector, electrically isolated, PC
pin compatible, protected against spikes. This interface is
used for initial device setup and requires a standard Null-
Modem cable when interfacing to a PC.
BUILDING NETWORK ADAPTER M
ODEL
2CS
Reset
10 100 ACT
M22563A
1
2
4
5
3
7
Rx Tx
Ch 2
Ch 1
Mode
6
Boot NML
Rx Tx
LAN
Power
Ch1
A(+) B(-)
Ch2
A(+) B(-)
AC/DC IN
24V
10
9
8
13
12
11
BNA-2CS
normal
M25116
normal
10/100
+
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