---
lang: "en"
title: "MGate MB3280: MODBUS TCP - RTU two-port gateway"
sku: "MB3280"
canonical_url: "https://shop.marcomweb.it/en/modbus/mgate-mb3280-modbus-tcp-rtu-two-port-gateway"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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MGate MB3280: MODBUS TCP - RTU gateway with two serial ports

The MB3280 gateway is a standard Modbus gateway that converts between Modbus TCP and Modbus RTU/ASCII protocols. Up to 16 simultaneous Modbus TCP masters are supported, with a maximum of 31 RTU/ASCII slaves per serial port (with repeater max 250). For RTU/ASCII masters, up to 32 TCP slaves are supported.

**Integration into a standard Modbus network**

The MB3280 gateway is designed for easy integration into Modbus TCP and RTU/ASCII networks.

With this model, serial Modbus slave devices can be seamlessly incorporated into an existing Modbus TCP network, and Modbus TCP slave devices can be made accessible to serial masters.

The MB3280 gateway offers features that make network integration simple, customizable, and compatible with almost all Modbus networks.

**Cost-effective gateway for high volumes**

The MGate MB3280 device can effectively integrate high-density Modbus node networks.
Each RS-233/422/485 serial port can be individually configured for Modbus RTU or Modbus ASCII or even operate at different baud rates, allowing both types of networks to be integrated with Modbus TCP within a single package.

 

KEY FEATURES

 

| Number of ports | 1x Ethernet port (10-100 Mbps)
2x RS232/RS422/RS485 port (DB9 male connector) |
|---|---|
| Protections | - Ethernet port: 1.5KV isolation protection
- Serial port: 1.5KV ESD protection |
| Serial port signals | - RS232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
- RS422 / RS485(4w): Tx+, Tx-, Rx+, Rx-, GND
- RS485 (2w): Data+, Data-, GND |
| Operating Modes | RTU Slave, RTU Master, ASCII Slave, ASCII Master |
| Multi-master and Multi-drop | - Master Mode: 32 TCP slaves
- Slave Mode: 16 TCP masters (request queue length: 32 for each master) |
| Power Supply | 12 ~ 48VDC (barrel connector)
Max current consumption: 200mA |
| Environmental Conditions | - Operating temperature: 0 ~ 55°C
- Humidity: 5 ~ 95% (non-condensing) |

 

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Source: https://shop.marcomweb.it/en/modbus/mgate-mb3280-modbus-tcp-rtu-two-port-gateway

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