Moxa Technologies MGate MB3280 Manuale utente

P/N: 1802032800014

*1802032800014*

MGate MB3280

Quick Installation Guide

Version 4.1, October 2019

Technical Support Contact Information

www.moxa.com/support

Moxa Americas:

Toll

-free: 1-888-669-2872

Tel:

1-714-528-6777

Fax:

1-714-528-6778

Moxa China (Shanghai office):

Toll

-free: 800-820-5036

Tel:

+86-21-5258-9955

Fax:

+86-21-5258-5505

Moxa Europe:

Tel:

+49-89-3 70 03 99-0

Fax:

+49-89-3 70 03 99-99

Moxa Asia-Pacific:

Tel:

+886-2-8919-1230

Fax:

+886-2-8919-1231

Moxa India:

Tel:

+91-80-4172-9088

Fax:

+91-80-4132-1045



- 2 -

Overview

The MGate MB3280 is a 2-port Modbus gateway that converts between

Modbus TCP and Modbus ASCII/RTU protocols. It can be used to allow

Ethernet masters to control serial slaves, or to allow serial masters to

control Ethernet slaves. Up to 16 TCP masters and 62 serial slaves can

be connected simultaneously.

Package Checklist

Before installing the MGate MB3280 Modbus gateway, verify that the

package contains the following items:

•1 MGate MB3280 Modbus gateway

•Power adapter

•4 Stick-on pads

•Quick installation guide (printed)

•Warranty card

Optional Accessory

•DK-35A: DIN-rail mounting kit (35 mm)

•Mini DB9F-to-TB Adapter: DB9 female to terminal block adapter

Notify your sales representative if any of the above items is missing or

damaged.

NOTE

This product is designed to be powered by a listed power

source marked "LPS" and is rated 12 to 48 VDC and 0.25 A

minimum. The device's operating temperature when using the

power adapter is 0 to 40°C (32 to 104°F), and 0 to 60°C (32 to

140°F)

when using an

alternative DC power source. If you need

additional assistance purchasing a power source, please contact

Moxa for more information.

- 3 -

Hardware Introduction

As shown in the following figures, the MGate MB3280 has two DB9 male

ports for transmitting serial data.

Reset Button—The reset button is used to load factory defaults. Using

a pointed object such as a straightened paper clip to hold the reset

button down for five seconds. Release the reset button when the Ready

LED stops blinking in order to load the factory defaults.

LED Indicators—Four LED indicators are located on the top panel:

Name

Color

Function

Ready

Red

Steady on:

Power is on and the unit is booting up.

Blinking:

IP conflict exists, or DHCP or BOOTP

server is not responding properly.

Green

Steady on:

Power is on and the unit is functioning

normally.

Blinking: Unit has been found by the Location

command in MGate Manager.

Off

Power is off or power error condition exists.

Ethernet

Orange

10 Mbps Ethernet connection.

Green

100 Mbps Ethernet connection.

Off

Ethernet cable is disconnected or has a short.

P1/P2

Orange

Unit is receiving data from device.

Green

Unit is transmitting data to device.

Off

No data is being exchanged with device.

- 4 -

Hardware Installation Procedure

STEP 1:

After unpacking the MGate MB3280, connect the power

adapt

er. Make sure that the adapter is connected to an

earthed socket outlet.

STEP 2:

Use a standard straight

through Ethernet cable to connect the

MGate

MB3280 to a network hub or switch. Use a cross-over

Ethernet cable if you are connecting the gateway directly to a

STEP 3:

Connect your device(s) to the MGate MB3280’s serial port.

STEP 4:

Place or mount the MGate MB3280. The unit may be placed

on a

horizontal surface such as a desktop, mounted on a DIN

rail, or mounted on the wall

Wall or Cabinet Mounting

Mounting the MGate MB3280 onto a wall

requires two screws. The head of the screws

should be 5.0 to 7.0 mm in diameter, the

shaft should be 3.0 t

o 4.0 mm in diameter,

and the length of the screws should be at

least 10.5 mm.

DIN-rail Mounting

DIN rail attachments can be purchased separately to mount the MGate

MB3280 on a DIN rail.

Wall Mounting

DIN-rail Mounting

Termination Resistor and Adjustable Pull High/Low Resistors

For some RS-485 environments, you may need to add termination

resistors to prevent the reflection of serial signals. When using

termination resistors, it is important to set the pull high/low resistors

correctly so that the electrical signal is not corrupted. For each serial

port, DIP switches are used for termination resistor and pull high/low

resistor settings. To enable the 120 Ωtermination resistor, set switch 3

on the assigned DIP switch to ON; set it to OFF (the default setting) to

disable the termination resistor. To set the pull high/low resistors to

150 KΩ(the default setting), set switches 1 and 2 on the assigned DIP

switch to the OFF position; set them both to ON for 1 KΩ.

- 5 -

Pull High/low Resistors for the RS-485 Port

Pull High

Pull Low

Terminator

1 K

Ω

1 K

Ω

120

Ω

Default

OFF

150 K

Ω

150 K

Ω

–

Software Installation

You can download the MGate Manager, User's Manual, and Device

Search Utility (DSU) from Moxa's website: www.moxa.com. Please refer

to the User’s Manual for additional details on using the MGate Manager

and DSU.

The MGate MB3280 also supports login via a web browser.

Default IP address: 192.168.127.254

Default account: admin

Default password: moxa

Pin Assignments

Ethernet Port (RJ45)

Signals

Tx+

Tx-

Rx+

Rx-

Serial Port (Male DB9)

Pin RS-232

RS-422/485

(4-Wire)

RS-485 (2-

Wire)

DCD

TxD-(A)

–

RxD

TxD+(B)

–

TxD

RxD+(B)

Data+(B)

DTR

RxD-(A)

Data-(A)

GND

DSR

–

RTS

–

CTS

–

Environmental Specifications

Power Requirements

Power Input

12 to 48 VDC

Power Consumption

12 to 48 VDC, 250 mA (max.)

Operating Temperature

0 to 60°C (32 to 140°F)

Storage Temperature

-40 to 85°C (-40 to 185°F)

Operating Humidity

5 to 95% RH

Dimensions

With ears:

Without ears:

22 x 100 x 111 mm (0.87 x 3.94 x 4.37 inch)

22 x 77 x 111 mm (0.87 x 3.03 x 4.37 inch)

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