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— 4 — 

— 5 — 

— 6 — 

                      Wall or Panel Mounting                  DIN-Rail Mounting 

5

GPRS

 

5. Connector Description 

Power Connector 

Connect the 12 to 48 VDC LPS or Class 2 power line to the W345’s 
terminal block. If the power is supplied properly, the Power LED will 
light up. The OS is ready when the Ready LED glows a solid green. 

Grounding the W345 

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.

 

 

SG

 

SG: 

The Shielded Ground 

(sometimes called Protected 
Ground) contact is the left most 
contact of the 3-pin power terminal 
block connector when viewed from 
the angle shown here. Connect the 
SG wire to an appropriate grounded 
metal surface. 

Ethernet Ports 

The 10/100 Mbps Ethernet port uses RJ45 connectors. 

PIN Signal 

1 ETx+ 
2 ETx- 
3 ERx+ 
6 ERx- 

 

1

8

 

Serial Ports 

The serial ports use DB9 connectors. Each port can be configured by 
software for RS-232, RS-422, or RS-485. The pin assignments for the 
ports are shown in the following table: 

Pin RS-232

RS-422

RS-485

(4-wire)

RS-485 

(2-wire) 

1

DCD

TxDA(-)

TxDA(-)

--- 

2

RxD TxDB(+)

TxDB(+)

--- 

3

TxD RxDB(+)

RxDB(+)

DataB(+) 

4

DTR

RxDA(-)

RxDA(-)

DataA(-) 

5

GND

GND GND GND 

6

DSR

--- --- --- 

7

RTS --- 

---  --- 

8

CTS --- 

---  --- 

 

1 2 3 4 5

6 7 8 9

SD Slot 

The W325 has an internal SD slot for storage expansion. The SD slot 
allows users to plug in a Secure Digital (SD) memory card compliant 
with the SD 1.0 standard for up to 1 GB of additional memory space. To 
install an SD card, first use a screw driver to remove the SD slot cover to 
access the slot. The slot is located on the right panel of the W325. Plug 
the SD card directly into the socket, and then replace the SD slot cover. 
The SD card will be mounted at 

/mnt/sd

. To remove the SD card from 

the slot, press the SD card in slightly with your finger, and then remove 
your finger to allow the card to spring out partially. You may now grasp 
the top of the card with two fingers and pull it out. 

Console Port 

The serial console port is a 4-pin pin-header RS-232 port. It is designed 
for serial console terminals, which are useful for viewing boot-up 
messages. Use the CBL-4PINDB9F-100 cable included with the product 
to connect a PC to the W345’s serial console port. 

SIM card installation 

The SIM slot is located on the front panel of W345. Before you install a 
SIM card, be sure to shut down the operating system. Use a screw driver 
to remove the protective cover to access SIM card slot. Make sure the 
chip on the SIM card faces up and then plug the SIM card directly into 
the slot. 

NOTE:

 Please refer to the W345 User’s manual for information on 

GPRS network connections. 

Reset 

Press the “Reset” button and hold it in 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. 

Real-time Clock 

The W345’s real-time clock is powered by a lithium battery. We strongly 
recommend that you do not replace the lithium battery without help from 
a qualified Moxa support engineer. If you need to change the battery, 
contact the Moxa RMA service team. 

ATTENTION 

There is a risk of explosion if the battery is replaced by an incorrect type 
of battery. 

6. Powering on the W345 

To power on the W345, connect the “terminal block to power jack 
converter” to the W345’s DC terminal block (located on the left rear 
panel), and then connect the power adaptor. Note that the Shielded 
Ground wire should be connected to the right most pin of the terminal 
block. It takes about 30 seconds for the system to boot up. Once the 
system is ready, the Ready LED will light up. 

7. Connecting the W345 to a PC 

There are two ways to connect the W345 to a PC: (1) through the serial 
console port, or (2) 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

ATTENTION 

Use the CBL-4PINDB9F-100 cable included with the product to connect 
a PC to the W345’s serial console port. Remember to choose “VT100” 
terminal type. 

To use Telnet, you need to know the W345’s IP address and netmask. 
The default LAN settings are shown below. For first-time configuration, 
you may find it convenient to use a cross-over Ethernet cable to connect 
directly from the PC to the W345. 

Default IP Address     

 

 

Netmask 

LAN    

192.168.3.127 

 

    255.255.255.0 

Once the W345 is powered on, the Ready LED will light up, and a login 
page will open. Use the following default Login name and Password to 
proceed. The defaults are: 

Login: root 
Password: root 

8. Configuring the Ethernet Interface 

Type the command 

vi /etc/network/interfaces

 to edit network 

configuration. The default IP address for W345’s Ethernet LAN is: 

ifconfig eth0 192.168.3.127

 

NOTE: 

Refer to the W345 User’s Manual for information on how to 

configure the Ethernet interface. 

 

 

Click here for online support: 

www.moxa.com/support 

The Americas:   +1-714-528-6777 (toll-free: 1-888-669-2872) 

Europe:   +49-89-3 70 03 99-0 

Asia-Pacific:  +886-2-8919-1230 

China:  +86-21-5258-9955 (toll-free: 800-820-5036) 

 

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 2008 Moxa Inc., all rights reserved. 

Reproduction without permission is prohibited. 

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