MGate MB3170 Series

1 and 2-port advanced serial-to-Ethernet Modbus gateways
  • 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
Series Description

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

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

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.

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PRODUCTS IN THIS SERIES

1 Port RS-232/422/485 advanced Modbus TCP to Serial Communication Gateway with 2 KV Isolation

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£306.00

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1 Port Modbus TCP – Serial Comm. Gateway advanced, 3 in 1, -40~75℃, with 2 KV Isolation

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£444.00

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1-port advanced Modbus gateway with 1 100BaseF(X) single-mode fiber port (SC connectors) and 2 KV optical isolation, 0 to 60°C operating temperature

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£462.00

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1-port advanced Modbus gateway with 1 100BaseF(X) single-mode fiber port (SC connectors) and 2 KV optical isolation, -40 to 75°C operating temperature

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£607.00

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1-port advanced Modbus gateway with 1 100BaseF(X) multi-mode fiber port (SC connectors) and 2 KV optical isolation, 0 to 60°C operating temperature

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£399.00

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1-port advanced Modbus gateway with 1 100BaseF(X) multi-mode fiber port (SC connectors) and 2 KV optical isolation, -40 to 75°C operating temperature

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£530.00

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Moxa

Moxa is a leading provider of edge connectivity, industrial computing, and network infrastructure solutions for enabling connectivity for the Industrial Internet of Things (IIoT). With over 35 years of experience, they help industrial enterprises overcome roadblocks and achieve operational resilience through purpose-built OT networking and cybersecurity. They are dedicated to changing the world through the power of connectivity, driving industrial transformation.

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ATOP

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Phoenix Contact

Phoenix Contact Connect distributes and controls power and data flows – they have been developing the right products for this purpose since 1923. Whether in industrial production facilities, in the field of renewable energies, in infrastructure, or for complex device connections, their solutions are used wherever processes must run automatically. Above and beyond their pure function, they help our partners develop sustainable applications with more efficient processes and reduced costs.

Phoenix Contact: We are paving the way to a climate-neutral and sustainable world with innovative products and solutions.

Manuals & Datasheets

Supported Documents & Firmware Last Updated: April 1, 2025

Support Documents

NAME TYPE VERSION RELEASE DATE
Datasheet for MGate MB3170/MB3270 Series

1.4 MB

Datasheet v1.3 Oct 19, 2022
Manual for MGate MB3000 Series

13.5 MB

Manual v13.0 Sep 11, 2022