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DA-681C Series

Intel® 7th Gen Core™ processor, IEC-61850, 1U rackmount computers with 6 Gigabit Ethernet ports, 12 isolated serial ports

Features and Benefits

  • IEC 61850-3, IEEE 1613, and IEC 60255 compliant for power substation automation systems
  • EN 50121-4 compliant for railway wayside applications
  • 7th Generation Intel® Core™ Processor
  • DDR4 memory slot; up to 32 GB capacity
  • Redundant power supply (100 to 240 VAC/VDC)
Certifications
Overview
Specifications
Resources
Models
Contact Sales

Introduction

The DA-681C computer is built around an Intel® Celeron® or Intel® Core™ i3 CPU and comes with dual display ports (2 x HDMI), 5 USB ports, 6 Gigabit LAN ports, two 3-in-1 RS-232/422/485 serial ports, 10 RS-485 (2–wire) serial ports, 6 digital input ports, and 2 digital output ports. Additionally, one 2.5” HDD/SSD slot and one mSATA slot are included to enable storage expansion for industrial applications that require large storage space for edge data acquisition.

With IEC 61850-3 and IEEE 1613 compliance, the DA-681C is sure to deliver stable and reliable system operation for power applications. EN 50121-4 compliance confirms that the DA-681C can deliver stable and reliable system operations in rail wayside applications, such as station SCADA systems, wayside disaster prevention, traction power, and signaling and safety systems, to provide an integrated view of your smart rail setup.

Appearance

Front View

Rear View

  • CPU

    Intel® Core™ i3-7100U Processor (2M Cache, 2.4 GHz)
    Intel® Celeron® 3965U Processor (2M Cache, 2.2 GHz

  • System Memory Slot

    SODIMM DDR4 slots x 2

  • DRAM

    32 GB max. capacity (SODIMM x 2, each supporting 2400 MHz and 16 GB maximum per module)

  • Storage Slot

    2.5-inch HDD/SSD slots x 1
    mSATA slots x 1

  • Graphics Controller

    Intel® HD Graphics 630

  • Supported OS

    Windows 10 IoT Enterprise LTSC 2019 Value (64-bit)
    Linux Debian 9
    Linux SDKs supported:
    Debian 12
    Ubuntu 22.04 (LTS & HWE)
    RedHat 9
    CentOS 7.9

  • Ethernet Ports

    Auto-sensing 10/100/1000 Mbps ports (RJ45 connector) x 6

  • Serial Ports

    RS-232/422/485 ports x 2 (software-selectable, DB9 male connector)
    RS-485 (2-wire) ports x 10 (terminal-block connector)

  • USB 2.0

    USB 2.0 hosts x 3, type-A connectors
    2 ports on the front panel, 1 port inside the computer

  • USB 3.0

    USB 3.0 hosts x 3, type-A connectors
    3 ports on the rear panel

  • Video Output

    HDMI x 2, HDMI connector (type A)

  • Secure Boot

    UEFI

  • TPM

    TPM v2.0

  • Connector

    Screw-fastened Euroblock terminal

  • I/O Mode

    DI

  • Isolation

    3k VDC

  • Sensor Type

    Dry contact
    Wet contact (NPN)

  • Dry Contact

    Logic 0: Close to GND
    Logic 1: Open

  • Wet Contact (COM to DI)

    Logic 0: 10 to 30 VDC
    Logic 1: 0 to 3 VDC

  • Connector

    Screw-fastened Euroblock terminal

  • Current Rating

    200 mA per channel

  • I/O Type

    Sink

  • Voltage

    0 to 30 VDC

  • Isolation

    3k VDC

  • Baudrate

    50 bps to 115.2 kbps

  • Connector

    Terminal block

  • ESD

    8 kV (level 4)

  • Isolation

    2 kV

  • Serial Standards

    RS-232/422/485

  • Surge

    2 kV

  • RS-232

    TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND

  • RS-422

    Tx+, Tx-, Rx+, Rx-, GND

  • RS-485-2w

    Data+, Data-, GND

  • System

    Programmable x 8
    Storage x 1
    Power x 1

  • LAN

    2 per port (10/100/1000 Mbps)

  • Serial

    2 per port (Tx, Rx)

  • Input Current

    100 to 240 VAC, 50/60 Hz, 1.6 A (max)
    100 to 240 VDC, 0.8 A (max)

  • Power Button

    Reset button (front panel)
    ON/OFF (rear panel)

  • Housing

    Metal

  • Dimensions (without ears)

    440 x 316 x 44 mm (17.32 x 12.44 x 1.73 in)

  • Weight

    9,000 g (21.82 lb)

  • Installation

    19-inch rack mounting

  • Operating Temperature

    -40 to 70°C (-40 to 158°F)

  • Storage Temperature (package included)

    -40 to 85°C (-40 to 185°F)

  • Ambient Relative Humidity

    5 to 95% (non-condensing)

  • EMC

    EN 55032/35

  • EMI

    CISPR 32, FCC Part 15B Class A

  • EMS

    IEC 61000-4-2 ESD: Contact: 8 kV; Air: 15 kV
    IEC 61000-4-3 RS: 80 MHz to 1 GHz: 10 V/m
    IEC 61000-4-4 EFT: Power: 4 kV; Signal: 4 kV
    IEC 61000-4-5 Surge: Power: 4 kV; Signal: 4 kV
    IEC 61000-4-6 CS: 10 V
    IEC 61000-4-8: 20 A/m
    IEC 61000-4-11

  • Power Substation

    IEC 61850-3
    IEEE 1613

  • Protection Relay

    IEC 60255

  • Shock

    IEC 61850-3 Edition 2.0, IEC 60068-2-27, IEC 60255-21-2

  • Safety

    UL 62368-1

  • Green Product

    RoHS, CRoHS, WEEE

  • Time

    285,419 hrs

  • Standards

    Telcordia Standard SR-332

Software, Firmware, and Drivers

FILTER

All Driver Firmware Software Package Utility
Name Type Checksum Version Operating System Release Date
Software Package for MXview One Series (Linux version) Download
552.6 MB 		Software Package
SHA-512
v1.7.2
  • Ubuntu 18.04
  • Ubuntu 20.04
  • Ubuntu 22.04
 May 08, 2026 May 08, 2026 Release notes
Software Package for MXview One Series (Windows version) Download
249.1 MB 		Software Package
SHA-512
v1.7.2
  • Windows 10
  • Windows 11
  • Windows Server 2016
  • Windows Server 2019
  • Windows Server 2022
 May 08, 2026 May 08, 2026 Release notes
DA Series Computers (Linux driver and SDK) Download
10.7 MB 		Software Package
SHA-512
v1.2
  • CentOS 7.9
  • Debian 12.x
  • RHEL 9
  • Ubuntu 22.04
 Dec 26, 2024 Dec 26, 2024 Release notes
MMS Service Software Package Download
1.4 MB 		Software Package
SHA-512
v1.2
  • Windows 10 IoT Enterprise LTSC 2021
 Jan 11, 2023 Jan 11, 2023 Release notes
x86 Computers (Linux drivers and SDK) Download
802.0 bytes 		Software Package
SHA-512
v1.1
  • CentOS 7.9
  • Debian 11.x
  • Ubuntu 20.04
 Nov 28, 2022 Nov 28, 2022 Release notes
Software Package for DA-681C Series (example code for Windows 10 IoT Enterprise LTSC 2021) Download
18.0 MB 		Software Package
SHA-512
v1.0
  • Windows 10 IoT Enterprise LTSC 2021
 Jul 28, 2022 Jul 28, 2022 Release notes
Utility for DA-681C Series (Windows 10 IoT Enterprise LTSC 2021) Download
2.9 MB 		Utility
SHA-512
v1.0
  • Windows 10 IoT Enterprise LTSC 2021
 Jul 28, 2022 Jul 28, 2022 Release notes
Driver for DA-681C Series (peripherals for Windows 10 IoT Enterprise LTSC 2021) Download
1.6 GB 		Driver
SHA-512
v1.0
  • Windows 10 IoT Enterprise LTSC 2021
 Jun 14, 2022 Jun 14, 2022 Release notes
MXview v3.2.6 Software Download
417.7 MB 		Software Package
SHA-512
v3.2.6
  • Windows 10
  • Windows 7
  • Windows Server 2012 R2
  • Windows Server 2016
  • Windows Server 2019
 Jan 07, 2022 Jan 07, 2022 Release notes
Firmware for DA-681C Series (Linux) Download
473.8 MB 		Firmware
SHA-512
v1.1
  • Debian 9.x
 Sep 08, 2021 Sep 08, 2021 Release notes
Proactive Monitoring Software Package Download
68.4 MB 		Software Package
SHA-512
v2.2
  • Windows 10 IoT Enterprise LTSC 2019
 Jul 28, 2021 Jul 28, 2021 Release notes
MXview v3.2.4 Software Download
389.2 MB 		Software Package
SHA-512
v3.2.4
  • Windows 10
  • Windows 7
  • Windows Server 2012 R2
  • Windows Server 2016
  • Windows Server 2019
 Jul 16, 2021 Jul 16, 2021 Release notes
Driver for DA-681C Series (Linux) Download
436.9 KB 		Driver
SHA-512
v1.0
  • Debian 9.x
 Oct 17, 2019 Oct 17, 2019 Release notes
Driver for DA-681C Series (peripherals for Windows 10 IoT Enterprise LTSC 2019) Download
695.6 MB 		Driver
SHA-512
v1.0
  • Windows 10 IoT Enterprise LTSC 2019
 Sep 16, 2019 Sep 16, 2019 Release notes
Software Package for DA-681C Series (example code for Windows 10 IoT Enterprise LTSC 2019) Download
16.9 MB 		Software Package
SHA-512
v1.0
  • Windows 10 IoT Enterprise LTSC 2019
 Sep 16, 2019 Sep 16, 2019 Release notes
Utility for DA-681C Series (Windows 10 IoT Enterprise LTSC 2019) Download
1.3 MB 		Utility
SHA-512
v1.0
  • Windows 10 IoT Enterprise LTSC 2019
 Sep 02, 2019 Sep 02, 2019 Release notes

Support Documents

FILTER

All 2D CAD Datasheet Declaration Manual QIG Tech Note
Name Type Version Release Date
Tech Note: Replacing the RTC Battery in DA Series Computers Download
3.3 MB 		Tech Note v1.0 Jan 09, 2026 Jan 09, 2026
Datasheet for DA-681C Series Download
1.1 MB 		Datasheet v1.8 Jun 23, 2025 Jun 23, 2025
Manual for DA-681C Series (hardware) Download
6.0 MB 		Manual v1.1 May 22, 2025 May 22, 2025
QIG for DA-681C Series Download
501.6 KB 		QIG v1.3 May 22, 2025 May 22, 2025
FOSS Statement for DA-681C series Win 10 LTSC 21H2 Download
216.7 KB 		Declaration v1.0 Oct 09, 2024 Oct 09, 2024
FOSS Statement for DA-681C series Win 10 LTSC 1809 Download
216.7 KB 		Declaration v1.0 Oct 09, 2024 Oct 09, 2024
Declaration of Conformity (EU/UK) for DA-681C Series Download
308.4 KB 		Declaration v1.0 Dec 22, 2023 Dec 22, 2023
Windows 10 IoT Enterprise LTSC 2021 (212H) User Manual for x86 Computers Download
9.4 MB 		Manual v1.2 Jan 20, 2023 Jan 20, 2023
Manual for Proactive Monitoring Software Download
3.9 MB 		Manual v2.0 Jun 09, 2021 Jun 09, 2021
Manual for DA-681C Series (Linux) Download
2.4 MB 		Manual v1.0 Feb 11, 2020 Feb 11, 2020
Manual for DA-681C Series (Windows) Download
7.0 MB 		Manual v1.0 Feb 11, 2020 Feb 11, 2020
2D CAD for DA-681C Series (DA-681C) Download
579.0 KB 		2D CAD Nov 27, 2019 Nov 27, 2019

Related Content

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All Solution Brochure

Available Models (3)

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moxa-da-681c-kl1-h-t-image.jpg | MoxaDA-681C-KL1-H-T
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moxa-da-681c-kl1-hh-t-image.jpg | MoxaDA-681C-KL1-HH-T
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moxa-da-681c-kl3-hh-t-image.jpg | MoxaDA-681C-KL3-HH-T
CPUIntel® Celeron® 3965UIntel® Celeron® 3965UIntel® Core™ i3-7100U
Power Input
100-240 VAC/VDC		SingleDualDual
Operating Temp.-40 to 70°C-40 to 70°C-40 to 70°C
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