MGate MB3170/MB3270 Series

1 and 2-port advanced serial-to-Ethernet Modbus gateways

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Features and Benefits

Supports Auto Device Routing for easy configuration
Supports route by TCP port or IP address for flexible deployment
Connects up to 32 Modbus TCP servers
Connects up to 31 or 62 Modbus RTU/ASCII slaves
Accessed by up to 32 Modbus TCP clients (retains 32 Modbus requests for each Master)
Supports Modbus serial master to Modbus serial slave communications
Built-in Ethernet cascading for easy wiring
10/100BaseTX (RJ45) or 100BaseFX (single mode or multi-mode with SC/ST connector)
Emergency request tunnels ensure QoS control
Embedded Modbus traffic monitoring for easy troubleshooting
Serial port with 2 kV isolation protection (for “-I” models)
-40 to 75°C wide operating temperature models available
Supports redundant dual DC power inputs and 1 relay output

Certifications

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Introduction

The MGate MB3170 and MB3270 are 1 and 2-port Modbus gateways, respectively, that convert between Modbus TCP, ASCII, and RTU communications protocols. The gateways provide both serial-to-Ethernet communication and serial (master) to serial (slave) communications. In addition, the gateways support simultaneously connecting serial and Ethernet masters with serial Modbus devices. The MGate MB3170 and MB3270 Series gateways can be accessed by up to 32 TCP master/clients or connect to up to 32 TCP slave/servers. Routing through the serial ports can be controlled by IP address, TCP port number, or ID mapping. A featured priority control function allows urgent commands to obtain an immediate response. All models are rugged, DIN-rail mountable, and offer optional built-in optical isolation for serial signals.

Integrate TCP Masters without Altering the Modbus RTU/ASCII Network or Software

The MB3270 can integrate Modbus TCP with Modbus RTU/ASCII, without modifying the existing Modbus RTU/ASCII architecture or software. With the serial redirector function, a serial master can maintain direct access to serial slave devices through a specially mapped serial port. This allows the serial and TCP masters to access serial slaves simultaneously.

Optical Fiber for Ethernet Communication

The MGate MB3170 Series includes 100BaseFX fiber models that support transmission distances up to 4 km for multi-mode models, and up to 40 km for single-mode models. Optical fiber is well-suited for industrial applications because it is immune to electromagnetic noise and interference. For environments that experience high ground loop voltages, fiber provides the best isolation protection, and because there is no danger of sparking, optical fiber is safer than copper wire to use in hazardous environments.

Auto-Device Routing for Easy Configuration (Patent Pending)

Moxa’s Auto-Device Routing function helps eliminate many of the problems and inconveniences encountered by engineers who need to configure large numbers of Modbus devices. A single mouse click is all that’s required to set up a slave ID routing table and configure Modbus gateways to automatically detect Modbus requests from a supervisory control and data acquisition (SCADA) system. By removing the need to manually create the slave ID routing table, the Auto-Device Routing function saves engineers significant time and cost.

Priority Control for Urgent Commands (Patented)

As Modbus networks increase in size and complexity, the lag time between commands and responses becomes a major concern. Advanced models of the MB3000 Series provide a priority control function for urgent commands, allowing users to force certain commands to get an immediate response. Depending on your system’s requirements, different methods are available to define which commands receive priority.

Patent Numbers: (US/TW)

US7,743,192 B2/I332618
US7,725,635 B2/I321007

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10/100BaseT(X) Ports (RJ45 connector)

2 (1 IP, Ethernet cascade)
Auto MDI/MDI-X connection
Magnetic Isolation Protection

1.5 kV (built-in)
Optical Fiber

Optical Fiber

		100BaseFX
		Multi-Mode		Single-Mode
Fiber Cable Type		OM1	50/125 µm	G.652
Fiber Cable Type		OM1	800 MHz x km	G.652
Typical Distance		4 km	5 km	40 km
Wavelength	Typical (nm)	1300		1310
	TX Range (nm)	1260 to 1360		1280 to 1340
	RX Range (nm)	1100 to 1600		1100 to 1600
Optical Power	TX Range (dBm)	-10 to -20		0 to -5
	RX Range (dBm)	-3 to -32		-3 to -34
	Link Budget (dB)	12		29
	Dispersion Penalty (dB)	3		1
Note: When connecting a single-mode fiber transceiver, we recommend using an attenuator to prevent damage caused by excessive optical power. Note: Compute the “typical distance” of a specific fiber transceiver as follows: Link budget (dB) > dispersion penalty (dB) + total link loss (dB).

Industrial Protocols

Modbus TCP Client (Master), Modbus TCP Server (Slave)
Configuration Options

Web Console (HTTP/HTTPS), Device Search Utility (DSU), MGate Manager, Telnet Console
Management

ARP, DHCP Client, DNS, HTTP, HTTPS, SMTP, SNMP Trap, SNMPv1/v2c/v3, TCP/IP, Telnet, UDP, NTP Client
MIB

RFC1213, RFC1317
Time Management

NTP Client

No. of Ports

MGate MB3170 Series: 1
MGate MB3270 Series: 2
Connector

MGate MB3170/MB3170I: DB9 male for RS-232 and terminal block for RS-422/485
MGate MB3270/MB3270I: 2 x DB9 male
Serial Standards

RS-232/422/485 (software selectable)
Baudrate

50 bps to 921.6 kbps
Data Bits

7, 8
Parity

None, Even, Odd, Space, Mark
Stop Bits

1, 2
Flow Control

DTR/DSR, RTS Toggle (RS-232 only), RTS/CTS
RS-485 Data Direction Control

ADDC® (automatic data direction control)
Pull High/Low Resistor for RS-485

1 kilo-ohm, 150 kilo-ohms
Terminator for RS-485

120 ohms
Isolation

MGate MB3170I: 2 kV (I models)
MGate MB3170I-T: 2 kV (I models)
MGate MB3170I-M-SC: 2 kV (I models)
MGate MB3170I-M-SC-T: 2 kV (I models)
MGate MB3170I-S-SC: 2 kV (I models)
MGate MB3170I-S-SC-T: 2 kV (I models)
MGate MB3270I: 2 kV (I models)
MGate MB3270I-T: 2 kV (I models)

RS-232

TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS-422

Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w

Data+, Data-, GND
RS-485-4w

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

Industrial Protocols

Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave

Max. No. of Client Connections

32
Max. No. of Server Connections

32

Input Voltage

12 to 48 VDC
Input Current

MGate MB3170/MB3270: 435 mA @ 12 VDC
MGate MB3170I/MB3170-S-SC/MB3170I-M-SC/MB3170I-S-SC: 555 mA @ 12 VDC
MGate MB3270I/MB3170-M-SC/MB3170-M-ST: 510 mA @ 12 VDC
Power Connector

7-pin terminal block

Contact Current Rating

Resistive load: 1 A @ 30 VDC

Housing

Plastic
IP Rating

IP30
Dimensions (with ears)

29 x 89.2 x 124.5 mm (1.14 x 3.51 x 4.90 in)
Dimensions (without ears)

29 x 89.2 x 118.5 mm (1.14 x 3.51 x 4.67 in)
Weight

MGate MB3170 Series: 360 g (0.79 lb)
MGate MB3270 Series: 380 g (0.84 lb)

Operating Temperature

MGate MB3170: 0 to 60°C (32 to 140°F)
MGate MB3170-T: -40 to 75°C (-40 to 167°F)
MGate MB3170-M-SC: 0 to 60°C (32 to 140°F)
MGate MB3170-M-SC-T: -40 to 75°C (-40 to 167°F)
MGate MB3170-M-ST: 0 to 60°C (32 to 140°F)
MGate MB3170-M-ST-T: -40 to 75°C (-40 to 167°F)
MGate MB3170-S-SC: 0 to 60°C (32 to 140°F)
MGate MB3170-S-SC-T: -40 to 75°C (-40 to 167°F)
MGate MB3170I: 0 to 60°C (32 to 140°F)
MGate MB3170I-T: -40 to 75°C (-40 to 167°F)
MGate MB3170I-M-SC: 0 to 60°C (32 to 140°F)
MGate MB3170I-M-SC-T: -40 to 75°C (-40 to 167°F)
MGate MB3170I-S-SC: 0 to 60°C (32 to 140°F)
MGate MB3170I-S-SC-T: -40 to 75°C (-40 to 167°F)
MGate MB3270: 0 to 60°C (32 to 140°F)
MGate MB3270-T: -40 to 75°C (-40 to 167°F)
MGate MB3270I: 0 to 60°C (32 to 140°F)
MGate MB3270I-T: -40 to 75°C (-40 to 167°F)
Storage Temperature (package included)

-40 to 85°C (-40 to 185°F)
Ambient Relative Humidity

5 to 95% (non-condensing)

EMC

EN 55032/24
EMI

CISPR 32, FCC Part 15B Class A
EMS

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

ATEX, Class I Division 2, IECEx
Maritime

DNV-GL
Freefall

IEC 60068-2-32
Shock

IEC 60068-2-27
Vibration

IEC 60068-2-6, IEC 60068-2-64
Safety

EN 60950-1, IEC 60950-1, IEC 62368-1, UL 62368-1

Time

MGate MB3170/MB3170I Series: 1,349,710 hrs
MGate MB3170-M-SC/M-ST/S-SC Series: 1,175,887 hrs
MGate MB3170I-M-SC Series: 768,343 hrs
MGate MB3170I-S-SC Series: 763,707 hrs
MGate MB3270/MB3270I Series: 1,236,384 hrs
Standards

Telcordia SR332

Warranty Period

5 years
Details

See www.moxa.com/warranty

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Software, Firmware, and Drivers

Name	Type	Version	Operating System	Release Date
Device Search Utility 1.1 MB	Utility	v2.3	Windows 10 Windows 2000 Windows 7 Windows 8 Windows 8.1 Windows 95 Windows 98 SE Windows ME Windows NT Windows Server 2003 Windows Server 2008 Windows Server 2008 R2 Windows Server 2012 Windows Server 2012 R2 Windows Server 2016 Windows Server 2019 Windows Vista Windows XP	2019-09-01 Sep 01, 2019 Release notes
MXview Trial Version 331.7 MB	Software Package	v3.0	Windows 10 Windows 7 Windows Server 2012 R2 Windows Server 2016	2019-03-21 Mar 21, 2019 Release notes
Firmware for MGate MB3270 874.8 KB	Firmware	v4.1		2019-01-16 Jan 16, 2019 Release notes
Firmware for MGate MB3170 857.5 KB	Firmware	v4.1		2019-01-15 Jan 15, 2019 Release notes
MXconfig plugin for MGate Series 404.4 KB	Software Package	v1.5	Windows 10 Windows 7 Windows 8 Windows Server 2008 Windows Server 2012 Windows Server 2012 R2	2018-12-24 Dec 24, 2018 Release notes
MXview plugin for MGate Series 2.8 MB	Software Package	v2.5	Windows 10 Windows 7 Windows 8 Windows Server 2008 Windows Server 2012 Windows Server 2012 R2	2018-12-24 Dec 24, 2018 Release notes
MGate Manager for MGate Series 4.9 MB	Utility	v1.15	Windows 10 Windows 2000 Windows 7 Windows 8 Windows 8.1 Windows Server 2003 Windows Server 2008 Windows Server 2008 R2 Windows Server 2012 Windows Server 2012 R2 Windows Server 2016 Windows Server 2019 Windows Vista Windows XP	2018-12-24 Dec 24, 2018 Release notes
Moxa CLI Configuration Tool for Linux 8.1 MB	Utility	v1.1	Linux Kernel 2.6.x Linux Kernel 3.x Linux Kernel 4.x	2018-11-16 Nov 16, 2018 Release notes
Moxa CLI Configuration Tool for Windows 1.4 MB	Utility	v1.1	Windows 10 Windows 7 Windows 8 Windows 8.1 Windows Server 2008 Windows Server 2008 R2 Windows Server 2012 R2 Windows Server 2016	2018-11-15 Nov 15, 2018 Release notes

Support Documents

Name	Type	Version	Release Date
Manual for MGate MB3170/MB3270 Series 15.4 MB	Manual	v11.2	2020-02-25 Feb 25, 2020
QIG for MGate MB3170/MB3270 Series 858.7 KB	QIG	v8.1	2019-12-02 Dec 02, 2019
Moxa CLI Configuration Tool User's Manual 1.1 MB	Manual	v2.0	2019-03-05 Mar 05, 2019
Datasheet for MGate MB3170/MB3270 Series 1.4 MB	Datasheet	v1.0	2018-11-12 Nov 12, 2018
2D CAD for MGate MB3170 425.7 KB	2D CAD		2015-01-07 Jan 07, 2015
2D CAD for MGate MB3170-SC 241.1 KB	2D CAD		2015-01-07 Jan 07, 2015
2D CAD for MGate MB3170-ST 241.8 KB	2D CAD		2015-01-07 Jan 07, 2015
2D CAD for MGate MB3270 TOP 145.2 KB	2D CAD		2015-01-07 Jan 07, 2015
Tech Note: How to Configure KingSCADA with MGate MB3000 2.7 MB	Tech Note	v1.0	2015-01-06 Jan 06, 2015
Tech Note: How to Configure WinCC with MGate MB3000 3.5 MB	Tech Note	v1.0	2015-01-06 Jan 06, 2015

Power Substation Guidebook

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Connect Different Protocols–It’s Quick, Easy, and Reliable

Solution Brochure

How to Ensure That Your Critical Power Systems Are Reliable

Solution Brochure

Save Time on Selecting and Configuring Your Protocol Gateway

Technology Guide

Implementing Industrial Cybersecurity on Your Serial-to-Ethernet Devices

Technology Guide

An Insider’s Guide to Bringing Your Serial Devices to the IIoT

White Paper

Frequently Asked Questions (FAQ) About Modbus Conversion

White Paper

How to Easily Troubleshoot Protocol Gateways

White Paper

New Technology Automates Arduous Routing Setup in Modbus Gateways

White Paper

Hands-on Advice for Your First Step towards IIoT Field Connectivity

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How to Architect Your Systems to Get the Most Out of Your Modbus Devices

White Paper

Finding a Better Protocol Conversion Solution Between PLCs and Devices

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Optimizing PLC Network Performance and Management

Available Models (18)

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	Compare MGate MB3170	Compare MGate MB3170I	Compare MGate MB3270	Compare MGate MB3270I
Ethernet	2 x RJ45	2 x RJ45	2 x RJ45	2 x RJ45
No. of Serial Ports	1	1	2	2
Serial Standards	RS-232/422/485	RS-232/422/485	RS-232/422/485	RS-232/422/485
Serial Isolation	–	2 kV	–	2 kV
Operating Temp.	0 to 60°C	0 to 60°C	0 to 60°C	0 to 60°C
	Add to Quote View Bag	Add to Quote View Bag	Add to Quote View Bag	Add to Quote View Bag

	Compare MGate MB3170-T	Compare MGate MB3170I-T	Compare MGate MB3270-T	Compare MGate MB3270I-T
Ethernet	2 x RJ45	2 x RJ45	2 x RJ45	2 x RJ45
No. of Serial Ports	1	1	2	2
Serial Standards	RS-232/422/485	RS-232/422/485	RS-232/422/485	RS-232/422/485
Serial Isolation	–	2 kV	–	2 kV
Operating Temp.	-40 to 75°C	-40 to 75°C	-40 to 75°C	-40 to 75°C
	Add to Quote View Bag	Add to Quote View Bag	Add to Quote View Bag	Add to Quote View Bag

	Compare MGate MB3170-M-SC	Compare MGate MB3170-M-ST	Compare MGate MB3170-S-SC	Compare MGate MB3170I-M-SC
Ethernet	1 x Multi-Mode SC	1 x Multi-Mode ST	1 x Single-Mode SC	1 x Multi-Mode SC
No. of Serial Ports	1	1	1	1
Serial Standards	RS-232/422/485	RS-232/422/485	RS-232/422/485	RS-232/422/485
Serial Isolation	–	–	–	2 kV
Operating Temp.	0 to 60°C	0 to 60°C	0 to 60°C	0 to 60°C
	Add to Quote View Bag	Add to Quote View Bag	Add to Quote View Bag	Add to Quote View Bag

	Compare MGate MB3170I-S-SC	Compare MGate MB3170-M-SC-T	Compare MGate MB3170-M-ST-T	Compare MGate MB3170-S-SC-T
Ethernet	1 x Single-Mode SC	1 x Multi-Mode SC	1 x Multi-Mode ST	1 x Single-Mode SC
No. of Serial Ports	1	1	1	1
Serial Standards	RS-232/422/485	RS-232/422/485	RS-232/422/485	RS-232/422/485
Serial Isolation	2 kV	–	–	–
Operating Temp.	0 to 60°C	-40 to 75°C	-40 to 75°C	-40 to 75°C
	Add to Quote View Bag	Add to Quote View Bag	Add to Quote View Bag	Add to Quote View Bag

	Compare MGate MB3170I-M-SC-T	Compare MGate MB3170I-S-SC-T
Ethernet	1 x Multi-mode SC	1 x Single-Mode SC
No. of Serial Ports	1	1
Serial Standards	RS-232/422/485	RS-232/422/485
Serial Isolation	2 kV	2 kV
Operating Temp.	-40 to 75°C	-40 to 75°C
	Add to Quote View Bag	Add to Quote View Bag

Easy As 1-2-3

Our MGate MB3000 Series Modbus gateways not only feature the MGate Manager tool that makes configuration and troubleshooting fast and easy, but they also support active polling to speed up SCADA performance, providing an easy solution for Modbus-RTU-to-Modbus-TCP conversion.

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