---
lang: "en"
title: "MOXA MGate MB3170-G2"
sku: "MOXA-MB3270"
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end_of_life: "true"
---

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MOXA MGate MB3170-G2: Advanced 1-port Serial-to-Ethernet Modbus gateway with 2 RJ45 Ethernet ports, DB9 serial connector, operating temperature from -10 to 60 °C

The MGate MB3170-G2, MB3270-G2, and MB3470-G2 devices are next-generation Modbus gateways that convert between Modbus TCP, RTU, and ASCII protocols, and even proprietary or extended Modbus serial protocols. These MGate gateways convert protocols transparently, actively poll connected devices, and cache the data. These features allow SCADA systems to retrieve Modbus data directly from the gateway instead of waiting for responses from all Modbus devices, greatly improving communication performance. Moxa developed the MGate series using the IEC 62443-4-1 secure development lifecycle process, ensuring secure connections and management of these gateways within industrial networks. In addition, the user experience is enhanced by versatile installation options that suit different mounting and wiring needs, a rugged design suited to harsh environments, and easy-to-use configuration and troubleshooting tools for quick maintenance.

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

## Technical Specifications

- 10/100BaseT(X) ports (RJ45 connector): 2 (cascaded Ethernet or software-configured dual subnet), Auto MDI/MDI-X connection
- 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
- Authentication: Local database
- Number of ports: 1
- Connector: 1/2/4 x DB9 male
- Serial standards: RS-232/422/485 (software selectable)
- RS-485 terminator: 120 ohm (software selectable)
- Isolation: I models: 2 kV
- RS-485 data direction control: ADDC (Automatic Data Direction Control)
- Modbus

- Max. number of client connections: 32
- Max. number of server connections: 32
- Modbus RTU/ASCII (Agent)

- Modes: Client (Master), Server (Slave), Proprietary Serial (client)
- Supported functions: 1, 2, 3, 4, 5, 6, 15, 16, 23
- Max. number of commands: 128/serial port
- Modbus TCP (Agent)

- Modes: Client (Master), Server (Slave)
- Max. number of client connections: 32
- Max. number of server connections: 32
- Input voltage: 12 to 48 VDC
- Input current: 452 mA @ 12 VDC
- Housing: Metal
- IP protection rating: IP30
- Operating temperature: -10 to 60 °C
- Storage temperature (package included): -40 to 85 °C
- Ambient relative humidity: 5 to 95% (non-condensing)

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Source: https://shop.marcomweb.it/en/modbus/moxa-mgate-mb3170-g2-copia

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.