S-CONNECT - MOXA MGate MB3170-G2/MB3270-G2/MB3470-G2 Series

Supports high-performing and low-latency agent mode to actively poll Modbus devices and cache data
Supports proprietary Modbus and Modbus extensions for various devices
Supports Auto Device Routing for easy configuration
Supports route by TCP port or IP address for different system architectures
Connects up to 32 Modbus TCP clients (MGate can queue 32 Modbus requests for each Modbus client connected)
Supports Modbus serial client to Modbus serial server communications
Ethernet cascading or dual subnet for flexible network system design
10/100BaseTX (RJ45) or 100BaseFX (single mode or multi-mode with SC/ST connector or SFP option)
Modbus communication test tools independant of external software
Intuitive Modbus diagnostics and traffic monitoring for easy troubleshooting
Serial port with 2 kV isolation protection (for -I models)
Supports redundant dual DC power inputs and 1 relay output
Compliance with IEC 62443-4-2 Security Level 2 requirements
-40 to 75°C wide operating temperature range (-T models)

The MGate MB3170-G2, MB3270-G2, and MB3470-G2 are new-generation Modbus gateways that convert between Modbus TCP, RTU, ASCII, and even proprietary or extended Modbus serial protocols. These MGate gateways transparently convert protocols, actively poll connected devices, and cache data in memory. These capabilities make it possible for SCADA systems to retrieve Modbus data directly from the gateway instead of waiting for all Modbus devices to respond, greatly increasing communication performance.

Moxa has developed the MGate Series using the IEC 62443-4-1 secure development life-cycle process ensuring secure connections and management of these gateways within industrial networks.

In addition, the user experience is enhanced by versatile installation options that accommodate diverse mounting and wiring requirements, a rugged design suitable for harsh environments, and easy-to-use configuration and troubleshooting tools for quick maintenance.

Hight-performance Modbus Conversion

MGate MB3170-G2/MB3270-G2/MB3470-G2 gateways operate in either transparent (direct protocol conversion) or agent (polling and caching) mode. Transparent mode converts protocols on a per-request basis. But for larger Modbus systems or when lower latency is needed, agent mode greatly enhances SCADA communication by directly accessing the gateway's cache.

Flexible Modbus Conversion for Various Systems

Supporting dual subnet network configuration, the MGate seamlessly integrates Modbus TCP with Modbus RTU/ASCII without disrupting existing systems. With multiple serial port models, the MGate simultaneously converts between Modbus serial and Modbus TCP, as well as serial-to-serial and TCP-to-TCP. Even with legacy serial, or COM port-based software, the MGate's Real COM mode enables communication through Ethernet TCP with no software adjustments. Beyond standard Modbus RTU and ASCII, the MGate also converts proprietary and extended Modbus serial protocols, eliminating the need for custom development or additional equipment and ensuring near-universal Modbus system compatibility. The MGate-G2 is capable of simultaneous conversion from proprietary serial and Modbus serial to Modbus TCP.

Intuitive Configuration and Minimal Maintenance

Downtime during maintenance can be costly. System alerts often require contacting vendors, prolonging troubleshooting due to information gathering and consultations. MGate-G2 gateways streamline this process by providing comprehensive troubleshooting information for rapid issue identification. One-click diagnostics gather all necessary data for technical support, empowering users to efficiently resolve issues and drastically reduce downtime.

Specifiation

Ethernet Interface

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

2 (Ethernet cascade or dual subnet configured by software)
Auto MDI/MDI-X connection

Magnetic Isolation Protection

1.5 kV (built-in)

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).

Ethernet Software Features

Industrial Protocols

Modbus TCP Client
Modbus TCP Server

Configuration Options

Web Console (HTTP/HTTPS)
Device Search Utility (DSU)
MCC Tool
Windows Driver Manager Utility
MXview One Software
MXconfig Software

Management

ARP
DHCP Client
DNS
HTTPS
ICMP
IPv4/IPv6
SMTP
SMTPS
SNMPv1/v2c/v3
SNTP
TCP/IP
UDP

MIB

MIB-II
RFC1213, RFC1317

Time Management

SNTP Client

Security Functions

Authentication

Local database

Encryption

AES-128
AES-256
ECC-256
ECC-384
ECC-521
HMAC
RSA-1024
RSA-2048
RSA-3072
RSA-4096
SHA-256
SHA-384

Security Protocols

SNMPv3
HTTPS (TLS 1.2)

Serial Interface

No. of Ports

MGate MB3170-G2 models: 1
MGate MB3270-G2 models: 2
MGate MB3470-G2 models: 4

Connector

MGate MB3170-G2/MB3270-G2/MB3470-G2 models: 1/2/4 x DB9 male
MGate MB3270-TB-G2/MB3470-TB-G2 models: 2/4 x 5-pin spring type terminal block

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

Pull High/Low Resistor for RS-485

1 kilo-ohm, 150 kilo-ohms
(software selectable)

Terminator for RS-485

120 ohms
(software selectable)

Isolation

I models: 2 kV

RS-485 Data Direction Control

ADDC (automatic data direction control)

Serial Signals

RS-232

TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
or
TxD, RxD, GND (for -TB models)

RS-422

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

RS-485-2w

Data+, Data-, GND

RS-485-4w

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

Serial Software Features

Industrial Protocols

Modbus RTU/ASCII Client
Modbus RTU/ASCII Server
(supported in Agent mode)
Proprietary Modbus Serial Client

Modbus (Transparent)

Max. No. of Client Connections

32

Max. No. of Server Connections

32

Modbus RTU/ASCII (Agent)

Mode

Client (Master)
Server (Slave)
Proprietary Serial (client)

Functions Supported

1, 2, 3, 4, 5, 6, 15, 16, 23

Max. No. of Commands

128/serial port

No. of Tags

MGate MB3170?G2 models: 150
MGate MB3270?G2 models: 300
MGate MB3470?G2 models: 600

Total Tag Size

MGate MB3170?G2 models: 2048 Bytes
MGate MB3270?G2 models: 3072 Bytes
MGate MB3470?G2 models: 4096 Bytes

Modbus TCP (Agent)

Mode

Client (Master)
Server (Slave)

Max. No. of Client Connections

32

Max. No. of Server Connections

32

Functions Supported

1, 2, 3, 4, 5, 6, 15, 16, 23

Max. No. of Commands

128

No. of Tags

MGate MB3170?G2 models: 150
MGate MB3270?G2 models: 300
MGate MB3470?G2 models: 600

Total Tag Size

MGate MB3170?G2 models: 2048 Bytes
MGate MB3270?G2 models: 3072 Bytes
MGate MB3470?G2 models: 4096 Bytes

Power Parameters

Input Voltage

12 to 48 VDC

Input Current

MGate MB3170-G2/MB3270-G2 models: 452 mA @ 12 VDC
MGate MB3470-G2 models: 583 mA @ 12 VDC

Power Connector

8-pin terminal block

Relays

Contact Current Rating

Resistive load: 1 A @ 30 VDC

Physical Characteristics

Housing

Metal

IP Rating

IP30

Dimensions (with ears)

MGate MB170-G2/MB3270-G2 models:
25 x 89 x 132 mm (0.98 x 3.50 x 5.19 in)
MGate MB3470-G2 models:
42 x 89 x 132 mm (1.65 x 3.50 x 5.19 in)

Dimensions (without DIN-rail mouting kit)

MGate MB170-G2/MB3270-G2 models:
25 x 89 x 129 mm (0.98 x 3.50 x 5.08 in)
MGate MB3470-G2 models:
42 x 89 x 129 mm (1.65 x 3.50 x 5.08 in)

Weight

MGate MB3170-G2 models: 338 g (0.75 lb)
MGate MB3270-G2 modelss: 393 g (0.87 lb)
MGate MB3470-G2 Series: 444 g (0.98 lb)

Environmental Limits

Operating Temperature

Standard models : -10 to 60°C (14 to 140°F)
Wide temp. models: -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)

Standards and Certifications

EMC

EN 61000-6-2/-6-4

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 2 GHz: 10 V/m
IEC 61000-4-4 EFT: Power: 4 kV; Signal: 4 kV
IEC 61000-4-5 Surge: Power: 2 kV, Signal: 1 kV
IEC 61000-4-6 CS: 10 V
IEC 61000-4-8 PFMF
IEC 61000-4-11

Hazardous Locations

ATEX
Class I Division 2
IECEx
Note: Certification processes are underway; expected completion by the end of June 2026.

Maritime

DNV
Note: Certification process is underway; expected completion by the end of June 2026

Safety

EN 62368-1
UL 62368-1

Vibration

IEC 60068-2-6

Package Drop Test

ISTA 1A

MTBF

Time

MGate MB3170-G2 models: 3,238,923 hrs
MGate MB3170I-G2 models: 3,156,544 hrs
MGate MB3170-S/M-SC-G2/M-ST-G2 models: 2,889,487 hrs
MGate MB3170-SFP-G2 models: 3,109,327 hrs
MGate MB3270-TB-G2 models: 2,943,248 hrs
MGate MB3270-G2 models: 2,931,934 hrs
MGate MB3270I-TB-G2 models: 2,809,979 hrs
MGate MB3270I-G2 models: 2,799,662 hrs
MGate MB3470-TB-G2 models: 2,377,791 hrs
MGate MB3470-G2 models: 2,363,042 hrs
MGate MB3470I-TB-G2 models: 2,208,607 hrs
MGate MB3470I-G2 models: 2,195,874 hrs

Standards

Telcordia Standard SR-332

Warranty

Period 5 years

Details

See www.moxa.com/warranty

Package Contents

Device

1 x MGate MB3170-G2/MB3270-G2/MB3470-G2 Series gateway

Documentation

1 x quick installation guide
1 x warranty card

Ordering Information

Model Name	Ethernet	No. of Serial Ports	Serial Connector	Serial Isolation	Operating Temperature
MGate MB3170-G2	2 x RJ45	1	DB9	-	-10 to 60°C
MGate MB3170-G2-T	2 x RJ45	1	DB9	-	-40 to 75°C
MGate MB3170-M-SC-G2	1 x RJ45 1 x Multi-mode SC Fiber	1	DB9	-	-10 to 60°C
MGate MB3170-M-SC-G2-T	1 x RJ45 1 x Multi-mode SC Fiber	1	DB9	-	-40 to 75°C
MGate MB3170-M-ST-G2	1 x RJ45 1 x Multi-mode ST Fiber	1	DB9	-	-10 to 60°C
MGate MB3170-M-ST-G2-T	1 x RJ45 1 x Multi-mode ST Fiber	1	DB9	-	-40 to 75°C
MGate MB3170-S-SC-G2	1 x RJ45 1 x Single-mode SC Fiber	1	DB9	-	-10 to 60°C
MGate MB3170-S-SC-G2-T	1 x RJ45 1 x Single-mode SC Fiber	1	DB9	-	-40 to 75°C
MGate MB3170-SFP-G2	1 x RJ45 1 x SFP Slot	1	DB9	-	-10 to 60°C
MGate MB3170-SFP-G2-T	1 x RJ45 1 x SFP Slot	1	DB9	-	-40 to 75°C
MGate MB3170I-G2	2 x RJ45	1	DB9	2 kV	-10 to 60°C
MGate MB3170I-G2-T	2 x RJ45	1	DB9	2 kV	-40 to 75°C
MGate MB3270-G2	2 x RJ45	2	DB9	-	-10 to 60°C
MGate MB3270-G2-T	2 x RJ45	2	DB9	-	-40 to 75°C
MGate MB3270-TB-G2	2 x RJ45	2	5-pin Terminal Block	-	-10 to 60°C
MGate MB3270-TB-G2-T	2 x RJ45	2	5-pin Terminal Block	-	-40 to 75°C
MGate MB3270I-G2	2 x RJ45	2	DB9	2 kV	-10 to 60°C
MGate MB3270I-G2-T	2 x RJ45	2	DB9	2 kV	-40 to 75°C
MGate MB3270I-TB-G2	2 x RJ45	2	5-pin Terminal Block	2 kV	-10 to 60°C
MGate MB3270I-TB-G2-T	2 x RJ45	2	5-pin Terminal Block	2 kV	-40 to 75°C
MGate MB3470-G2	2 x RJ45	4	DB9	-	-10 to 60°C
MGate MB3470-G2-T	2 x RJ45	4	DB9	-	-40 to 75°C
MGate MB3470-TB-G2	2 x RJ45	4	5-pin Terminal Block	-	-10 to 60°C
MGate MB3470-TB-G2-T	2 x RJ45	4	5-pin Terminal Block	-	-40 to 75°C
MGate MB3470I-G2	2 x RJ45	4	DB9	2 kV	-10 to 60°C
MGate MB3470I-G2-T	2 x RJ45	4	DB9	2 kV	-40 to 75°C
MGate MB3470I-TB-G2	2 x RJ45	4	5-pin Terminal Block	2 kV	-10 to 60°C
MGate MB3470I-TB-G2-T	2 x RJ45	4	5-pin Terminal Block	2 kV	-40 to 75°C

Accessories (sold separately)

SFP Modules
SFP-1FELLC-T	SFP module with 1 100Base single-mode with LC connector for 80 km transmission, -40 to 85°C operating temperature
SFP-1FESLC-T	SFP module with 1 100Base single-mode with LC connector for 40 km transmission, -40 to 85°C operating temperature
SFP-1FEMLC-T	SFP module with 1 100Base multi-mode, LC connector for 2/4 km transmission, -40 to 85°C operating temperature
Mounting Kits
DK-89-01	DIN-rail mounting kit with 1 plate (89 x 19 x 9 mm), 3 M3 x 5 mm screws
WK-178-01	Wall-mounting kit with 1 plate (178 x 25 x 1.5 mm), 3 M3 x 5 mm screws
Cables
CBL-F9M9-150	DB9 female to DB9 male serial cable, 1.5 m
CBL-F9M9-20	DB9 female to DB9 male serial cable, 20 cm
Connectors
Mini DB9F-to-TB	DB9 female to terminal block connector
Power Cords
CBL-PJTB-10	Non-locking barrel plug to bare-wire cable

MOXA MGate MB3170-G2/MB3270-G2/MB3470-G2 Series Datasheet (1154.7 kB)