UC-8481 Series Quick Installation Guide

STEP 1: Insert the
top of the DIN rail
into the slot just
below the stiff metal
spring.
Rear View
UC-8481
Quick Installation Guide
To remove the UC-8481 from the DIN rail, reverse steps 1 and 2
above.
First Edition, May 2012
5. Connector Description
1. Overview
The UC-8481 is an 802.11n, GPS, and 3G GSM/HSPA+ enabled
embedded computer that comes with 2 RS-232/422/485 serial
ports, 2 Ethernet ports, 4 digital input channels, 4 digital output
channels, a CompactFlash socket, and 2 USB 2.0 ports, as well as
a total of seven antenna ports to allow for easy expansion of Wi-Fi,
cellular, and GPS capabilities. The UC-8481 is particularly
well-suited for rolling stock or other vehicular applications, giving
a solid, convenient foundation for constructing intelligent,
cost-effective wireless communication platforms.
2. Package Checklist
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•
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STEP 2: The
mounting
assembly should
then snap into
place, as shown.
1 UC-8481 embedded computer
Wall-mounting kit
DIN rail mounting kit
CBL-4PINDB9F-100: 4-pin pin header to DB9 female console
port cable, 100 cm
Quick installation guide (this guide)
Document and software CD
Warranty card
Note: Please notify your sales representative if any of the
above items are missing or damaged.
3. Panel Layout
Refer to the following figures for the panel layouts.
Front View
Power Connector
Connect the 24 VDC power line to the UC-8481’s power input with
the M12 connector. When the OS has fully booted up, the Ready
LED will glow a steady green color.
LED Indicators
The following table describes the LED indicators located on the
front and rear panels of the UC-8481.
LED Name
Power
LED Color
Green
Off
Storage
Yellow
CF card is detected
Off
CF card is not detected
Ready
Green
The system is ready
Off
The system is not ready
X1
Green
(programmable)
Off
LAN1, LAN2
P1 Tx, P2 Tx
(on the right of
the DB9 port)
P1 Rx, P2 Rx
(on the right of
the DB9 port)
LED Function
Power is on and functioning normally
Power is off, or power error
Grounding the UC-8481
Grounding and wire routing help limit the effects of noise due to
electromagnetic interference (EMI). Run the ground connection
from the ground screw to the grounding surface prior to connecting
the power.
ATTENTION
This product is intended to be mounted to a well-grounded
mounting surface, such as a metal panel.
There are two ground
connectors on the front
panel of the UC-8481. One
is located at the middle pin
of the power input, the
other is beside the power
input. Use either connector
for grounding.
Programmable: no default definition
Programmable: no default definition
Green
Yellow
100 Mbps Ethernet mode
10 Mbps Ethernet mode
Off
No activity
Green
Off
Serial port transmitting data
Serial port not transmitting data
Yellow
Serial port receiving data
Off
Serial port not receiving data
4. Installing the UC-8481
Wall and cabinet mounts
The two metal brackets included with the UC-8481 can be used to
attach it to a wall or the inside of a cabinet. Using two screws per
bracket, first attach the brackets to the bottom of the UC-8481.
Next, use two screws per bracket to attach the UC-8481 to a wall
or cabinet.
SIM Card
The UC-8481 comes with 3
cellular modules for wireless
communication. Unscrew
the SIM card cover and
insert the SIM card in the
desired slot. The SIM1
socket is reserved for the
default cellular module.
Ethernet Port
The UC-8481 comes with 2 10/100 Mbps Ethernet ports with M12
connectors.
DIN rail assemblies
An aluminum DIN rail mounting assembly is included in the
package. When attaching the rail assembly to the UC-8481, orient
the stiff metal spring towards the top.
P/N: 1802084800010
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Serial Port
CompactFlash
The 2 serial ports (P1 and P2) use DB9 male connectors. Each port
can be configured by software for use on RS-232, RS-422, or
RS-485 networks. The pin assignments are shown in the following
table:
The UC-8481 has a single CompactFlash type I/II slot for memory
expansion, and comes with a single CompactFlash (CF) card. The
CF card may be accessed by unscrewing the panel located on the
bottom of the UC-8481 device.
Pin RS-232
RS-422
The mount point for the CompactFlash filesystem is /mnt/sda.
1
2
3
4
5
6
7
8
TxDA(-)
TxDB(+)
RxDB(+)
RxDA(-)
GND
–
–
–
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RS-485
(4-wire)
TxDA(-)
TxDB(+)
RxDB(+)
RxDA(-)
GND
–
–
–
RS-485
(2-wire)
–
–
DataB(+)
DataA(-)
GND
–
–
–
Antenna
The UC-8481 comes with its GPS, 3G GSM/HSPA+, and dual
802.11n antenna connectors already mounted by default; three
more empty port-holes are provided, to be used when mounting
antenna connectors for additional wireless, cellular or GPS
modules. The following chart indicates the default configuration of
antenna mounts:
WARNING
Be sure to power off the computer before inserting or
removing the CompactFlash card!
Console Port
The RS-232 console port is a 4-pin header connector located on the
underside of the motherboard above the CF card socket. As above,
use a screwdriver to remove the panel protecting the CF card to
access the 4-pin RS-232 connector. This serial port is used to
access the console terminal, and is useful for viewing boot
messages, file system logs, and error messages. Use the
CBL-4PINDB9F-100 cable included with the UC-8481 to connect a
PC to the UC-8481’s serial console port.
USB
The UC-8481 computer features 2 USB 2.0 ports for external
storage expansion.
6. Powering on the UC-8481 Computer
To power on the UC-8481, connect the power cable to the M12
connector and then connect the power adapter.
ATTENTION
Antenna connectors for the default 802.11n module are mounted
on the W1 and W3 port-holes; connectors for the cellular
GSM/GPRS/EDGE/UMTS/HSPA+ module uses the W5 port, and for
the GPS module, on the W7 port. We strongly recommend that
only qualified technical engineers for antenna installations, as this
is a specific product that requires professional mounting and
configuration. Please refer to the UC-8481 User’s Manual for
detailed instructions.
DI, DO
The UC-8481 has 4 digital output channels and 4 digital input
channels. T he UC-8481 User's Manual has detailed pinout and
wiring diagrams.
The Shielded Ground should be connected to the center
pin of the power input connector.
Note that it takes approximately 30 seconds for the system to boot
up. Once the system is ready, the Ready LED will light up.
Netmask
DHCP
255.255.255.0
255.255.255.0
Note that LAN1 of the UC-8481 uses DHCP for both IP address and
netmask. Once the UC-8481 is powered on and the Ready LED has
lit up, a login page will open. The default Login and Password are
root/root:
Login: root
Password: root
Configuring the Ethernet Interface
If you use the console cable for first-time configuration of the
network settings, use the following commands to edit the
/etc/network/interfaces file:
#ifdown –a
To reconfigure LAN settings all networking interfaces (LAN 1/eth0,
LAN 2/eth1, WLANA/wlan0) must be disabled.
#vi /etc/network/interfaces
This command opens up the Vi editor to view and modify the
interfaces configuration file.
After the boot setting of the LAN interface has been modified, use
the following command to activate the LAN settings immediately:
#sync; ifup –a
NOTE: For additional configuration information, refer to the
UC-8481 User’s Manual.
7. Connecting the UC-8481 Computer to a PC
There are two ways to connect the UC-8481 to a PC: through the
serial console port, or by Telnet over the network. The COM
settings for the serial console port are: Baudrate=115200 bps,
Parity=None, Data bits=8, Stop bits =1, Flow
Control=None.
Reset Button
ATTENTION
Press and hold the “Reset” button continuously for at least 5
seconds to load the factory default configuration. After the factory
default configuration has been loaded, the system will reboot
automatically. The Ready LED will blink on and off for the first 5
seconds, and then maintain a steady glow once the system has
rebooted.
Remember to choose the “VT100” terminal type. Use the
CBL-4PINDB9F-100 cable included with the product to
connect a PC to the UC-8481’s serial console port.
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Default IP Address
DHCP
192.168.4.127
192.168.5.127
LAN 1
LAN 2
WLAN A
To use telnet you will need to know the UC-8481’s IP address and
netmask. The default LAN settings are shown below. For initial
configuration, you may find it convenient to use a crossover
Ethernet cable to connect directly from the PC to the UC-8481.
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