DA-720 Series
Quick Installation Guidex86 Rackmount Embedded Computers

Version 1.2, June 2022

Technical Support Contact Informationwww.moxa.com/support

 2022 Moxa Inc. All rights reserved.

P/N: 1802007200012*1802007200012*

Overview
The DA-720 Series computers are x86 platforms with 14 Gigabit
Ethernet ports, 2 isolated RS-232/422/485 serial ports, USB, VGA, and2 PCIe ports for expansion modules. The DA-720 comes in a standard
19-inch 2U rack-mountable case. Its robust design is ideal for
specialized industrial automation applications, including power
substations, transportation and shipping, and oil and gas production
and supply.
IEC-61850-3 and IEEE 1613 compliance ensures that the DA-720 candeliver stable and reliable system operations in power applications. TheDA-720 also complies with the IEC 60255 standards to provide
electrical protection relays for use in a smart substation. IEC 60255 is
one of the most widely used standards for testing relays and protection
equipment, and compliance with the standard ensures that DA-720 will
work reliably and efficiently with IEDs as part of a robust substation
automation system.
EN 50121-4 compliance ensures that the DA-720 can deliver stable andreliable system operations in rail track-side applications.
The DA-720 comes with two different CPU options and basic models
that allow system designers to install the mSATA interface, RAM, andoperating system according to their specific requirements. This
flexibility is particularly helpful when designing customized industrialsolutions.
The DA-720 is provided with 2 PCIe ports for expansion modules, which
include 8-port RS-232/422/485 module as well as 4-port and 8-port
10/100/1000 Mbps LAN modules. The DA-720 computer can support up
to 22 Gigabit LAN ports plus 10 serial ports, or 14 Gigabit LAN ports
plus 18 serial ports, making it an ideal solution for a wide range ofindustrial automation applications.

Model Names and Package Checklist
The DA-720 Series includes the following models:
••

•

•

DA-720-C5-DPP: Rackmount computer with Core i5-6300U,
2.4 GHz, dual-core CPU, without mSATA/RAM/OS, 14 gigabit
Ethernet ports, 2 isolated RS-232/422/485 ports, 2 PCIe expansion
slots, VGA x 1, DVI-D x 1, 4 USB hosts, IEC 61850-3 compliant,-25 to 55°C operating temperature
DA-720-C5-DPP-LX: Rackmount computer with Core i5-6300U,
2.4 GHz, dual-core CPU, with 8G mSATA, 4G RAM and Linux Debian
8 64-bit OS preinstalled, 14 gigabit Ethernet ports, 2 isolated RS232/422/485 ports, 2 PCIe expansion slots, VGA x 1, DVI-D x 1,4 USB hosts, IEC 61850-3 compliant, -25 to 55°C operating
temperature
DA-720-C7-DPP: Rackmount computer with Core i7-6600U,
2.6 GHz dual-core CPU without mSATA/RAM/OS, 14 gigabit
Ethernet ports, 2 isolated RS-232/422/485 ports, 2 PCIe expansion
slots, VGA x 1, DVI-D x 1, 4 USB hosts, IEC 61850-3 compliant, 25 to 55°C operating temperature
DA-720-C7-DPP-LX: Rackmount computer with Core i7-6600U,
2.6 GHz dual-core CPU, with 8G mSATA, 4G RAM and Linux Debian
8 64-bit OS preinstalled, 14 gigabit Ethernet ports, 2 isolated RS232/422/485 ports, 2 PCIe expansion slots, VGA x1, DVI-D x 1,-2-

4 USB ports, IEC 61850-3 compliant, -25 to 55°C operating
temperature
NOTE

To order a DA-720 system with a pre-installed Windows 10
Enterprise LTSB 64 Bit OS, please contact a Moxa sales
representative.

Each basic system model is shipped with following standard items:••••

DA-720 Series embedded computer
Rackmount kit
Quick installation guide (printed)
Warranty card

Hardware Installation
Front View

Rear View

Connecting the PowerThe DA-720 has dual power inputs. Use a Phillips screwdriver toremove the terminal clamp screws. Connect the power cord to thescrews, and then fasten the screws to the unit. Refer to the following
figure for detailed information:-3-DC Terminal

AC Terminal

Power Terminal Block Pin Assignment
Terminal
Description
Number1
PWR1
Line/DC+

2

345678Note

PWR1 Line/DC+ is connected to thepositive (+) terminal if the power source isDC, or to the Line terminal if the powersource is AC.
PWR1
PWR1 Neutral/DC- is connected to theNeutral/DCnegative (-) terminal if the power source isDC, or to the Neutral terminal if the powersource is AC.
Surge Ground Surge Ground is connected to the Ground
via a jumper on the terminal block. It is usedas the ground conductor for all surge andtransient suppression circuitry.
NOTE: You must disconnect the Surge
Ground from the Ground during HIPOT(dielectric strength) testing.
GroundGround should be connected to the groundterminal for AC power source 1.
NC
Reserved for future customization.
NC
Reserved for future customization.
GroundGround should be connected to the groundterminal for AC power source 2.
Surge Ground Surge Ground is connected to the Ground
via a jumper on the terminal block. It is usedas the ground conductor for all surge andtransient suppression circuitry.

9PWR2Line/DC+

10PWR2
Neutral/DC-NOTE: You must disconnect the Surge
Ground from the Ground during HIPOT(dielectric strength) testing.
PWR2 Line/DC+ is connected to thepositive (+) terminal if the power source isDC, or to the Line terminal if the powersource is AC.
PWR2 Neutral/DC- is connected to thenegative (-) terminal if the power source isDC, or to the Neutral terminal if the powersource is AC.

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After you have connected the power cords to the power input unit, thesystem will automatically boot up. Depending on the operating systeminstalled, the boot-up process will take about 30 to 60 seconds.
Front Panel LEDs
There are 60 LED indicators on the front panel of the DA-720.
Information about each LED is given in the following table:
LEDPower

StoragePower Input 1
StatusPower Input 2
StatusGigabit Ethernet
LEDs 1-14

Serial Port TX 1-2
Serial Port RX 1-2
Programmable 1-4

ColorGreenOffDescription
Power is on
No power input or a problem in thepower supply
Yellow/Blinking Data is being written to or readfrom the storage unit
OffStorage unit is idle
RedPower Input 1 has failed
OffPower is being properly supplied toPower Input 1
RedPower Input 2 has failed
OffPower is being properly supplied toPower Input 2
Green
Ethernet link is up
Blinking
Ethernet is transmitting orreceiving dataOffNo connection
Green/Blinking Serial port is transmitting data
OffNo operation on the serial TX ports
Yellow/Blinking Serial port is receiving data
OffNo operation on the serial RX ports
GreenAs defined by the user

Connecting to a Display
The DA-720 comes with two display ports, one VGA and one DVI-D
display ports that support both clone and extend modes.
USB Ports
The DA-720 comes with four USB ports, two USB 3.0 ports on the rear
panel and two USB 2.0 ports on the front panel. Users may use theseUSB ports to connect keyboard, mouse, or other peripherals such asflash drives to expand the system’s storage capacity.
Ethernet Ports
The DA-720 provides 14 100/1000 Mbps Ethernet RJ45 ports. The pinassignments are shown in the table below:
Pin12345678100 Mbps
Tx+
TxRx+
––Rx–
–1000 Mbps
TRD(0)+TRD(0)TRD(1)+TRD(2)+TRD(2)TRD(1)TRD(3)+TRD(3)-The default IP addresses and netmasks of the Ethernet ports are asfollows:-5-LAN 1
LAN 2
LAN 3
LAN 4
LAN 5LAN 6LAN 7LAN 8LAN 9LAN 10LAN 11LAN 12LAN 13
LAN 14NOTEDefault IP Address
192.168.3.127
192.168.4.127
192.168.5.127
192.168.6.127
192.168.7.127
192.168.8.127
192.168.9.127
192.168.10.127
192.168.11.127
192.168.12.127
192.168.13.127
192.168.14.127
192.168.15.127
192.168.16.127

Netmask
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0

The Windows 7E and Windows 10 models use DHCP for IP
address assignment.

Installing Expansion Modules
The DA-720 is provided with two expansion slots, which can be used toconnect Moxa’s DE Series expansion modules. Slot A is available forboth serial and LAN modules while slot B is for serial module only. You
can mount expansion modules using these slots located on the rear
panel of the DA-720.

Configuring the Ethernet Interface
Moxa Debian 8 Linux users should follow these steps:
If you are using the console cable to configure network settings for thefirst time, use the following commands to edit the interfaces file:
STEP 1: Take all network interfaces offline, before you reconfigure theLAN settings using the following command:

Moxa:~# ifdown –aSTEP 2: Edit the network interfaces file.
You can use a text editor of your choice, but VI is the default text editor
on the DA-720.

Moxa:~#vi /etc/network/interfaces
STEP 3: Set the DA-720 for either dynamic IP addressing or staticaddressing.
To set it for dynamic IP addressing, enter the following lines into
the network interfaces file:# The primary network interface
auto eth0-6-

iface eth0 inet dhcp
To set an interface for static IP addressing, use the following
configuration:# The loopback network interface
auto loiface 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
Each interface must be configured with separate entries in thenetwork/interfaces file. LAN1 corresponds to eth0, LAN 2
corresponds to eth1, and so forth for the remaining interfaces.
STEP 4: Exit the text editor.
Use the following command to exit VI::wq
STEP 5: After the interfaces file has been configured, use the following
command to reinitialize the network interfaces and to activate the newsettings:

Moxa:~#sync; ifup –a
Windows 7E and Windows 10 users should follow these steps:
Step 1: Go to Start  Control Panel  Network and Internet Network Connections.
Step 2: In Local Area Connection Properties, select Internet
Protocol Version 4 (TCP/IPv4) and click Properties.
Step 3: Click OK after entering the preferred IP address and netmask.

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For additional configuration settings, refer to the DA-720
software user’s manual for the OS installed on your machine.

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