Moxa Technologies DA-681C Series Manuel utilisateur

P/N: 1802006811010

*1802006811010*

DA-681C Series

Quick Installation Guide

x86 Rackmount Embedded Computers

Version 1.0, November 2019

Technical Support Contact Information

www.moxa.com/support

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

- 2 -

Overview

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, 2 3-in-1 RS-232/422/485 serial ports, 10 RS-485

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.

Package Checklist

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

•DA-681C rackmount computer

•Rack-mounting kit

•Quick Installation Guide

•Warranty card

Hardware Installation

Front View

Rear View

- 3 -

Connecting the Power

The DA-681C provides single or dual power inputs using a terminal block,

which is located on the rear panel. A grounding connector is also provided

for power surge protection.

In addition, a power button on the rear panel allows users to power on the

computer when it is in the sleep or hibernate mode.

Connect the power cord wires to the screws on the power input of the

DA-681C and then tighten the screws. The Power LED will light up to

indicate that power is being supplied to the DA-681C, after which the

BIOS will initialize the flash disk module, causing the Storage LED to

blink. It should then take about 30 to 60 seconds for the operating system

to complete the boot-up process.

For a detailed power connection and surge protection information, refer to

the DA-681C Hardware User’s Manual.

Front-panel LEDs

There are 42 LED indicators on the front panel, which are described in the

following table:

LED

Color

Description

Power

Green

Power is on

Off

No power input

Storage

Yellow/

Blinking

Data is being written to or read

from the storage unit

Off

Storage unit is idle

Power 1 Failure

Off

The 1st power supply is on

Red

Error in the 1st power supply

Power 2 Failure

Off

The 2nd power supply is on

Red

Error in the 2nd power supply

Gigabit LAN LEDs 1 to 6

Green

100 Mbps Ethernet mode

Orange 1000 Mbps (Gigabit) Ethernet

mode

Serial Port P1 to P12

(TX/RX)

Green

Tx: Serial data is being transmitted

Yellow

Rx: Serial data is being received

Programmable LEDs

1 to 8

Green/

Blinking

Can be used to indicate statuses

for debugging, as defined by users.

Connecting to Displays

The DA-681C comes with 2 HDMI interfaces on the rear panel, allowing

users to connect two displays

NOTE

For highly reliable video streaming, use premium, certified HDMI

cables.

- 4 -

Connecting to a Keyboard and Mouse

Connectors for a keyboard and mouse are located on the rear panel of the

computer. Both connectors are PS/2 interfaces; you can directly connect

a keyboard and a mouse using these connectors.

Serial Ports

The DA-681C comes with 2 software-selectable RS-232/422/485 serial

ports (P1 and P2) on the rear panel with DB9 connector.

RS-232

RS-422

RS-485

(4-wire)

RS-485

(2-wire)

DCD

TxDA(-)

–

RxD

TxDB(+)

–

TxD

RxDB(+)

DataB(+)

DTR

RxDA(-)

DataA(-)

GND

DSR

–

RTS

–

CTS

–

In addition, there are 10 serial ports (P3 to P12) that use terminal blocks.

Refer to the following table for the pin assignments:

RS-232

RS-422

RS-485

(4-wire)

RS-485

(2-wire)

TxD

TxD(+)

TxDA(+)

–

RxD

TxD(-)

TxDB(-)

–

RTS

RxD(+)

RxDB(+)

Data(+)

CTS

RxD(-)

RxDA(-)

Data(-)

GND

USB Ports

The DA-681C comes with 2 USB 2.0 ports on the front panel and 3 USB

3.0 ports on the rear panel. The USB ports can be used to connect

peripherals, such as flash drives, for expanding the systems storage

capacity.

Ethernet Ports

The DA-681C has 6 100/1000 Mbps RJ45 Ethernet ports on the rear panel.

Refer to the following table for the pin assignments:

100 Mbps

1000 Mbps

Tx+

TRD(0)+

Tx-

TRD(0)-

Rx+

TRD(1)+

–

TRD(2)+

–

TRD(2)-

Rx-

TRD(1)-

–

TRD(3)+

–

TRD(3)-

- 5 -

Digital Inputs/Digital Outputs

The DA-681C comes with six digital inputs and two digital outputs in a

terminal block. Refer to the following figures for the pin definitions and

wiring methods.

Relay Output

The DA-681C provides a relay

output located on the rear panel of

the computer. Refer to the figure

on the right for a detailed pin

definition of the relay output

connectors.

Installing a Storage Drive

The DA-681C is provided with a storage slot located on the front panel for

storage expansion.

Follow these steps to install a SATA disk.

1. Unfasten the screw on the storage slot cover and pull down the cover

to access the storage tray.

2. Push the clutch on the storage tray to the left to release the storage

tray and pull out the tray.

- 6 -

3. Place the SATA disk on the tray.

Ensure that the SATA disk aligns with the screws on the storage tray.

4. Turn the storage tray and the SATA disk arrangement around to

access the screws on the rear side of the tray. Fasten the four screws

to secure the SATA disk to the tray, as indicated in the diagram

below.

5. Insert the storage tray back into the storage slot.

Ensure that the tray is inserted correctly into the rails of the storage

slot and the tray slide smoothly inside the slot.

6. Slide the storage slot cover back and fasten the screw to secure it.

For details on installing other peripheral devices, refer to the DA-681C

Hardware User’s Manual.

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