Moxa Technologies DA-681A Series User manual

P/N: 1802006810030

*1802006810030*

DA-681A Series

Quick Installation Guide

x86 Rackmount Embedded Computers

Edition 1.0, November 2015

Technical Support Contact Information

www.moxa.com/support

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+91-80-4132-1045

- 2 -

Overview

The Moxa DA-681A Series x86-based rack-mount embedded computers

are designed for control, monitoring, data acquisition, and protocol

conversion applications. With its robust design, the DA-681A is suitable

for industrial automation applications, such as power automation,

transportation, and oil and gas.

The DA-681A’s main operating system is based on the 3rd Gen Intel®

Core™ Celeron 1047UE 1.4 GHz CPU and HM65 chipset, which supports

standard x86, 1 x VGA, 4 x USB, 6 Gigabit LAN ports, 2 RS/232/422/485

3-in-1 serial ports, and 10 RS-485 (RS-422 by CV) ports. The DA-681A

has a mini PCIe socket for mSATA and comes with Linux pre-installed;

Windows 7 Embedded is also supported by the CTOS process.

Another plus is that the serial ports come with 2 kV digital galvanic

isolation protection to guarantee communication reliability in harsh

industrial environments. In addition, the state-of-art IEC 61850-3, IEEE

1613, and IEC 60255 compliance all-in-one design provides rich

interfaces especially well-suited for power substation automation

applications.

Package Checklist

Each basic system model is shipped with following standard items:

•DA-681A rackmount computer

•Rackmount kit

•Documentation CD or DVD

•Quick installation guide (printed)

•Warranty card

Hardware Installation

Front View

Rear View: DPP/DPP-T Models

Rear View: SP Models

- 3 -

Connecting the Power

The DA-681A offers both single power and dual power inputs. Use a

phillips screwdriver to remove the terminal clamp screws. Connect the

power cord to the screws, and then fasten the screws to the unit. Refer to

the following figure for detailed information.

DPP and DPP-T Models

SP Models

AC Terminal

DC Terminal

NOTE

1. Disconnect all power supply cords before performing

maintenance on the product.

2. Fuses (fuse F1, F2 T6.3A, 500VAC/400VDC) should be

replaced by a qualified Moxa RMA service technician.

- 4 -

SP Model Power Terminal Block Pin Assignment

Terminal

Number

Description Note

N/C

No function

Line/DC+

Line/DC+ is connected to the positive (+)

terminal if the power source is DC, or to the

Line terminal if the power source is AC.

N/C

No function

Neutral/DC–

Neutral/DC– is connected to the negative (–)

terminal if the power source is DC, or to the

Neutral terminal if the power source is AC.

N/C

No function

N/C

No function

DPP and DPP-T Model Power Terminal Block Pin Assignment

Terminal

Number

Description Note

1 PWR1

Line/DC+

PWR1 Line/DC+

is connected to the positive

(+) terminal if the power source is DC, or to

the Line terminal if the power source is AC.

PWR1

Neutral/DC-

PWR1 Neutral/DC-is connected to the

negative (-) terminal if the power source is

DC, or to the Neutral terminal if the power

source is AC.

Reserved for future customization.

Signal Ground

Signal Ground should be connected to the

ground terminal for AC power source 1.

COM

COM pin for the alarm relay.

Normal Open pin for the alarm relay.

Signal Ground

Signal Ground should be connected to the

ground terminal for AC power source 1.

Reserved for future customization.

9 PWR2

Line/DC+

PWR2 Line/DC+

is connected to the positive

(+) terminal if the power source is DC, or to

the Line terminal if the power source is AC.

PWR2

Neutral/DC-

PWR2 Neutral/DC-is connected to the

negative (-) terminal if the power source is

DC, or to the Neutral terminal if the power

source is AC.

When finished, press the Power Switch button on the rear panel to start

the system. It will take about 30 to 60 seconds to boot up, depending on

your operating system.

- 5 -

Front Panel LEDs

There are 46 LED indicators on the front panel. Information about each

LED is given in the following table.

LED

Color

Description

Serial Port TX

1-12

Green

Serial port is transmitting data

Off

Not operating

Serial Port RX

1-12

Yellow

Serial port is receiving data

Off

Not operating

Power

Green

Power is on

Off

No power input or power error exists

Storage

Yellow/

Blinking

Data is being written to or read from the

storage unit

Off

Storage unit is idle

Power Fail 1 Red

Power 1 has failed

(for dual power models only)

Off

Power is being properly supplied

Power Fail 2 Red

Power 2 has failed

(for dual power models only)

Off

Power is being properly supplied

Gigabit LAN

LEDs 1-6

Green

100 Mbps Ethernet mode

Yellow

1000 Mbps (Gigabit) Ethernet mode

Off

Not operating, or in 10 Mbps Ethernet mode

Programmable

1-6

Green Defined by user

Reset Button

Pressing the Reset button initiates a warm reboot. The button plays the

same role as a desktop PC’s reset button. After pressing the reset button,

the system will reboot automatically. Note that all unsaved data will be

lost when you push the reset button.

Connecting to a Display

Your DA-681A embedded computer comes with a D-Sub 15-pin female

connector to connect to the VGA monitor. Be sure to remove the power

before you connect or disconnect the monitor cable.

Serial Ports

The DA-681A offers 2 RS-232/422/485 ports with DB9 connectors and 10

RS-485 ports with terminal blocks. The pin assignments for the ports are

shown in the following table:

DB9 Pin Assignment

RS-232

RS-485 (4W)

RS-485 (2W)

RS-422

DCD

TxD-(A)

–

TxD-(A)

RXD

TxD+(B)

–

TxD+(B)

TXD

RxD+(B)

Data+(B)

RxD+(B)

DTR

RxD-(A)

Data-(A)

RxD-(A)

GND

DSR

–

RTS

–

CTS

–

- 6 -

Terminal Block Pin Assignment

Ethernet Ports

The DA-681A has 6 10/100/1000 Mbps LAN ports with RJ45 connectors.

The pin assignments for the ports are shown in the following table:

Pin No.

10/100 Mbps

1000 Mbps

TX+

TRD(0)+

TX-

TRD(0)-

RX+

TRD(1)+

–

TRD(2)+

–

TRD(2)-

RX-

TRD(1)-

–

TRD(3)+

–

TRD(3)-

The default IP addresses and netmasks of the Ethernet ports are as

follows:

Default IP Address

Netmask

LAN 1

192.168.3.127

255.255.255.0

LAN 2

192.168.4.127

255.255.255.0

LAN 3

192.168.5.127

255.255.255.0

LAN 4

192.168.6.127

255.255.255.0

LAN 5

192.168.7.127

255.255.255.0

LAN 6

192.168.8.127

255.255.255.0

Configuring the Ethernet Interface

Linux users should follow these steps:

If you use the console cable to configure network settings for the first

time, use the following commands to edit the interfaces file. First, take all

network interfaces offline, before you reconfigure the LAN settings:

# ifdown –a

Next, edit the network interfaces file; you may use the text editor of your

choice, but VI is the default editor on the DA-681A-LX:

#vi /etc/network/interfaces

You may set the DA-681A for either dynamic IP addressing or static

addressing. To set it for dynamic IP addressing, enter the following lines

into the network interfaces file:

# The primary network interface

auto eth0

iface eth0 inet dhcp

- 7 -

If you wish to set an interface for static IP addressing, then use the

following configuration. Each interface must be configured with separate

entries in the network/interfaces file; LAN1 corresponds to eth0, LAN 2

corresponds to eth1, and so forth for the remaining interfaces.

# The loopback network interface

auto lo

iface lo inet loopback

# The first LAN interface, LAN 1

auto eth0

iface eth0 inet static

address 192.168.3.127

netmask 255.255.255.0

broadcast 192.168.3.255

# The second LAN interface, LAN 2

auto eth1

iface eth1 inet static

address 192.168.4.127

netmask 255.255.255.0

broadcast 192.168.4.255

Exit VI by typing:

:wq

After the interfaces file has been configured, use the following commands

to reinitialize the network interfaces and activate the new settings

immediately:

#sync; ifup –a

Win7 users should follow these steps:

Step 1:

Go to Start Control Panel Network and Internet 

Network Connections.

Step 2:

From the Local Area Connection Properties screen click

Internet Protocol (TCP/IP) and then select Properties.

Step 3:

Click OK after inputting the preferred IP address and netmask.

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