Please note that we will be closed for the holiday period starting from 24th December, and will reopen on 2nd January 2026. Our last shipping dates to customers this year will be - UK Mainland: 22/12/2025. Highlands/2-day carriage: 18/12/2025. FedEx Priority: 16/12/2025. FedEx Economy: 15/12/2025.

MGate MB3170-G2 Series - Moxa 1 Port RS-232/422/485 Ethernet Modbus Gateway

Ethernet Modbus Gateway – 1x RS-232/422/485 Port – 2x LAN ports with Fibre options – IEC62443-4-2 Compliant – Modbus TCP & Modbus RTU/ASCII Support – DIN-Rail Mount – Front Facing I/O – 12V to 48V DC – Up to Extended -40°C to +70°C Temperature Operation

Who We Are

Impulse Embedded is a leading provider of Industrial computing systems and solutions. Our customers rely on us to provide the best embedded computing products and solutions for the challenges presented by today’s industrial demands. Together with our global manufacturing partners we provide world-class innovative embedded computing and automation products and solutions suitable for multiple industrial market sectors.

Not found what you're looking for?

We're only a phone call away. Contact us for more information or for personalised help with your project.

Contact Us

MGate MB3170-G2 is a next-generation 1-port Modbus gateway that bridges Modbus TCP with Modbus RTU/ASCII to modernise brownfield assets without changing existing control logic. It supports transparent protocol conversion or high-performance agent mode, which actively polls serial devices and caches values, allowing SCADA systems to read data directly from the gateway with lower latency and higher throughput. Up to 32 Modbus TCP clients and 32 server connections are supported, providing ample headroom for future expansion. For network design flexibility, the device offers two 10/100Base-T(X) ports that can be configured for Ethernet cascading or dual subnets. Selected models also add 100Base-FX fibre (SC/ST, single-mode or multi-mode) or an SFP slot for long-distance backbone links.

Day-to-day work is simplified with an HTTPS web console, discovery utilities and one-click diagnostics that capture all relevant logs and status for rapid troubleshooting. Security is enhanced by TLS 1.2 and SNMPv3, and the platform is developed in accordance with the IEC 62443-4-1 secure development lifecycle. Industrial features include dual 12–48 VDC power inputs, a relay output and DIN-rail mounting. Standard models operate from -10 to +60°C, with -T variants extending to -40 to +75°C; “I” versions add 2 kV serial isolation for noisy environments. If you need a compact, robust bridge between PLCs, drives and SCADA over copper or fibre, MB3170-G2 is purpose-built for the job. (See specs and ordering table, pages 1–7.)

Ready to streamline your Modbus integration? Ask us for a matched fibre or SFP variant and a pre-configured build.

Compare Model Specifications

Model Name Device Type Ethernet Ports Ethernet Speed Serial Ports Baud Rate Communication Interface Protocol Support Operation Mode Input Voltage Operating Temperature Market Certifications Mounting Warranty
MGate MB3170-G2 Serial-to-Ethernet Modbus Gateway 2x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-G2-T Serial-to-Ethernet Modbus Gateway 2x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170I-G2 Serial-to-Ethernet Modbus Gateway 2x RJ45 10/100 Mbps 1x Isolated RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170I-G2-T Serial-to-Ethernet Modbus Gateway 2x RJ45 10/100 Mbps 1x Isolated RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-M-SC-G2 Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-M-SC-G2-T Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-M-ST-G2 Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-M-ST-G2-T Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-SFP-G2 Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-SFP-G2-T Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-S-SC-G2 Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-S-SC-G2-T Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
Add to Quote List
Model Name Device Type Ethernet Ports Ethernet Speed Serial Ports Baud Rate Communication Interface Protocol Support Operation Mode Input Voltage Operating Temperature Market Certifications Mounting Warranty
MGate MB3170-G2 Serial-to-Ethernet Modbus Gateway 2x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-G2-T Serial-to-Ethernet Modbus Gateway 2x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170I-G2 Serial-to-Ethernet Modbus Gateway 2x RJ45 10/100 Mbps 1x Isolated RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170I-G2-T Serial-to-Ethernet Modbus Gateway 2x RJ45 10/100 Mbps 1x Isolated RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-M-SC-G2 Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-M-SC-G2-T Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-M-ST-G2 Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-M-ST-G2-T Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-SFP-G2 Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-SFP-G2-T Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-S-SC-G2 Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -10°C to 60°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years
MGate MB3170-S-SC-G2-T Serial-to-Ethernet Modbus Gateway 1x RJ45 10/100 Mbps 1x RS-232/422/485 (DB9) 50bps to 921.6kbps Ethernet, Serial Modbus TCP, MODBUS RTU/ASCII Modbus TCP Client (Master), Modbus TCP Server (Slave), Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave 12V to 48V DC -40 to 75°C CE, FCC Class A, ROHS, Class I Division 2, ATEX DIN-Rail 5 Years

Delivery & Returns

We offer a range of delivery options to suit your needs.

UK Mainland

  • Free next day shipping on all orders over £150 (UK Mainland only)
  • Next day delivery - £12 (UK Mainland only)
  • Postcode Exclusions: ZE, KW15+ PO 30, JE, HS, GY, TR, IM, AB31+, KW 1-14, FK19+, PA20+, IV, PH

Northern Ireland & Highlands

  • Northern Ireland (2 business day delivery) - from £40 (UKIMS required for NI)
  • Highlands delivery (up to 3 business days) - from £30

Ireland

  • Ireland Economy (2-5 business days) - from £35
  • Ireland Priority (1-3 business days) - from £50

RMA

In order to process returned goods, Impulse Embedded Limited uses an internal RMA system. Before returning goods for any reason, please contact Impulse Embedded Limited (returns@impulse-embedded.co.uk) to request an RMA number. Please confirm the reason for the return of the goods, providing the Serial Number, Product Code, and Impulse Embedded Limited Invoice Number (if known).

When returning goods, please ensure they are suitably packed so as to avoid damage, are in the original packaging, along with all accessories, with the outer packaging marked with the RMA number. It is recommended that you use a signed delivery service, as goods lost in transit are not the responsibility of Impulse Embedded Limited.

Please do not write the RMA number on the goods or on the original packaging. Impulse Embedded Limited may refuse returned goods and return them if they arrive without an RMA number, or not in the original packaging.

Add to a wishlist

Create a new list
Done

Moxa 1 Port RS-232/422/485 Ethernet Modbus Gateway

Please complete the details below to receive your quote

Select the products of this series that you wish to request quantity or project pricing, or lead time information for:

  • MGate MB3170-G2

    1 Port RS-232/422/485 Ethernet Modbus Gateway – Standard Operating Temperature

  • MGate MB3170-G2-T

    1 Port RS-232/422/485 Ethernet Modbus Gateway – Extended Wide Operating Temperature

  • MGate MB3170I-G2

    1 Port Isolated RS-232/422/485 Ethernet Modbus Gateway – Standard Operating Temperature

  • MGate MB3170I-G2-T

    1 Port Isolated RS-232/422/485 Ethernet Modbus Gateway – Extended Wide Operating Temperature

  • MGate MB3170-M-SC-G2

    1 Port RS-232/422/485 Ethernet Modbus Gateway – Multi-mode SC fiber – Standard Operating Temperature

  • MGate MB3170-M-SC-G2-T

    1 Port RS-232/422/485 Ethernet Modbus Gateway – Multi-mode SC fiber – Extended Wide Operating Temperature

  • MGate MB3170-M-ST-G2

    1 Port RS-232/422/485 Ethernet Modbus Gateway – Multi-mode ST fiber – Standard Operating Temperature

  • MGate MB3170-M-ST-G2-T

    1 Port RS-232/422/485 Ethernet Modbus Gateway – Multi-mode ST fiber – Extended Wide Operating Temperature

  • MGate MB3170-SFP-G2

    1 Port RS-232/422/485 Ethernet Modbus Gateway – SFP fiber – Standard Operating Temperature

  • MGate MB3170-SFP-G2-T

    1 Port RS-232/422/485 Ethernet Modbus Gateway – SFP fiber – Extended Wide Operating Temperature

  • MGate MB3170-S-SC-G2

    1 Port RS-232/422/485 Ethernet Modbus Gateway – Single-mode SC fiber – Standard Operating Temperature

  • MGate MB3170-S-SC-G2-T

    1 Port RS-232/422/485 Ethernet Modbus Gateway – Single-mode SC fiber – Extended Wide Operating Temperature

Add to Quote List