MC-7400 Series
Quick Installation Guide

Version 1.1, January 2021

Technical Support Contact Informationwww.moxa.com/support

 2021 Moxa Inc. All rights reserved.

P/N: 1802074001012*1802074001012*

Overview
The MC-7400 box computer is powered by the 6th generation Intel Core™
i processor, delivering a full range of I/O connectivity, including serial
ports, Gigabit Ethernet ports, NMEA 0183 ports, USB 2.0/3.0 ports, and a
Mini PCI slot for storage expansion. The MC-7400 is designed to provide
outstanding PC performance, bringing a new level of flexibility and controlto marine applications.

Package Checklist
Before installing the MC-7400, verify that the package contains thefollowing items:••••••

MC-7400 embedded computer
Terminal block to power jack converter
Wall-mounting kit
Quick installation guide (printed)
Documentation
Warranty card

Please notify your sales representative if any of the above items aremissing or damaged.

MC-7410 AC Model Panel Layout

MC-7410 DC Model Panel Layout-2-MC-7420 AC Model Panel Layout

MC-7420 DC Model Panel Layout

LED Indicators
The following table describes the LED indicators located on the front panelof the MC-7400:

Real-time Clock
The embedded computer’s real-time clock is powered by a lithium battery.
We strongly recommend that you do NOT replace the lithium battery
yourself. If the battery needs to be changed, contact the Moxa RMA
service team at http://www.moxa.com/rma/about_rma.aspx.

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ATTENTION
Used batteries are environmentally hazardous; dispose of themin the proper manner.

WARNING
There is a risk of explosion if the wrong type of battery is used. To
avoid this potential danger, be sure to use the correct type ofbattery. Contact the Moxa RMA service team if you have anyquestions about replacing your battery.
LED NamePowerStatus

Description
Power is on and computer is functioning
Greennormally
OffStorage

Yellow Blinking: Data transmission
OffTx 1/2/3/4
Rx 1/2/3/4

Power is off

GreenOff
Yellow
Off

No data transmission.
Blinking: Data is being transmitted.
No connection
Blinking: Data is being transmitted.
No connection

Installing the MC-7400
Wall Mounting
The MC-7400 can be installed on a wall by using the wall-mounting kit.
STEP 1: Use eight screws for each bracket and attach the brackets to therear of the MC-7400.

-4-STEP 2: Use two screws (Ø3.7 mm, 60 mm in length) per side to attach
the MC-7400 to a wall or cabinet.

Connector Description
Power Connector
The MC-7400 comes with a 100 to 240 VAC power
input or a 24 VDC power input (via the terminalblock). If power is supplied properly, the PowerLED will light up.

NOTE

The DC model should be supplied by a UL-listed power source,
whose output meets the ES1 standard and is rated at 24 VDC,
4.06 A (min.) If you need further assistance selecting a powersource, contact a Moxa representative.

Grounding the MC-7400
Grounding and wire routing help limit the effects of noise due toelectromagnetic interference (EMI). Run the ground connection from thegrounding screw (M6) to the grounding surface prior to connecting thepower as shown in the illustrations below:
NOTE

A 4 mm2 conductor must be used when the connection to theexternal grounding screw is utilized. The heat sink is grounded tothe chassis by an internal screw.

-5-Ethernet Ports
The 10/100/1000 Mbps Ethernet ports use RJ45 connectors.
Pin1234567810/100 Mbps
ETx+
ETxERx+––ERx––1000 Mbps
TRD(0)+TRD(0)TRD(1)+TRD(2)+TRD(2)TRD(1)TRD(3)+TRD(3)-

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

RS-232

RS-422

123
45678

DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS

TxDA(-)TxDB(+)RxDB(+)RxDA(-)GND–––

RS-485(4-wire)
TxDA(-)TxDB(+)RxDB(+)RxDA(-)GND–––RS-485(2-wire)––DataB(+)
DataA(-)
GND–––

Display Outputs
For connecting display monitors, the MC-7400 comes with 1 DisplayPort,
1 DVI-I interface, and 1 DVI-D interface. The DisplayPort supports amaximum resolution of 4096 x 2304 @ 60 Hz and the DVI interface
supports a maximum resolution of 1920 x 1200 @ 60 Hz.
Removable Storage Tray
The MC-7400 computer has two removable SSD trays on the front panel.
The default boot priority is the SSD 1 slot first.
NMEA 0183 Ports (MC-7420)
By default, the MC-7420 comes with 4 NMEA 0183 ports. You can expand
it to 8 NMEA 0183 ports. See the following figure for the NMEA pin outs.

-6-Digital Input/Output Channels (MC-7420)
The MC-7400 comes with 4 digital input and 4 digital output channels. Theinterface could be expanded to 8 digital input and 8 digital output
channels. You can connect to the input/output channels using theterminal blocks included in the package. See the following figure for thepin assignments.

Power ON/OFF Switch
The MC-7400 comes with a power ON/OFF switch on the front panel. Youcan use the 2-pin terminal block on the power ON/OFF switch to boot up
a computer installed inside a marine console.
USB Hosts
The MC-7400 has five USB 2.0 and four SuperSpeed USB 3.0 type A ports
and support xHCI/ EHCI mode for full high-speed bandwidth. The USB
ports support peripherals like keyboards, mice, and other devices such as
portable HDDs or DVD-ROMs.
Audio Interface
The MC-7400 comes with an audio line-out, and a microphone input,
allowing users to connect a speaker system, an earphone, or amicrophone.

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