Modbus RTU / Modbus TCP Gateway


MR-(F)-GW is a compact Modbus RTU / Modbus TCP Gateway. The MR-Gateway enables bidirectional data exchange between Modbus RTU fieldbus devices and a Modbus TCP master (client). The MR-(F)-GW can be operated in two modes. Either as a transparent gateway in Modbus RTU over TCP mode or as a protocol converter (Modbus TCP mode). The MR-Gateway can be connected to METZ CONNECT Modbus RTU devices via two 4-pole terminals on the front of the device and a jumper plug. An integrated web server is used for parameter settings, management and monitoring of the two interfaces (Ethernet / RS485). The web interface is also used to update the firmware. The MR-Gateway is suitable for decentralised mounting in electrical sub-distribution boards or in control cabinets on TH35 mounting rails in accordance with IEC 60715.

  • Simultaneous access from 32 Modbus TCP clients
  • Bidirectional exchange of data between Modbus RTU Slave devices and a Modbus TCP Master (client)
  • Protocol: Modbus RTU over TCP (Transparent gateway), Modbus TCP/IP v1.0b, HTTP 1.0
  • Integrated web server
  • Intuitive and software-independent TCP configuration via web interface
  • Simple device search of METZ CONNECT Modbus RTU devices on the RS485 bus
  • Fast connection of METZ CONNECT Modbus RTU devices via proven jumper plug technology
  • Galvanic 3-way isolation (RS485- Ethernet-power supply)
  • Status monitoring of TCP and RS485 communication
  • Demo access to the web interface: metz-connect.com/mr-gateway
Technical Data
General Data
1 x Ethernet port (RJ-45 IEC 60603-7-51 (2010))
10/100 Mbits with auto-negotiation
Modbus RTU over TCP (Transparent gateway), Modbus TCP/IP v1.0b, HTTP 1.0
Modbus RTU v1.1b3
300 to 115200 Bit/s
120 Ohm switchable
1,5 kV
24 V DC +/- 10 % (SELV)
50 mA
1.3 W
green LED
green LED (100 Mbit), yellow LED (10 Mbit)
green LED
35 x 69.3 x 60 mm
64 g
-5 °C to 55 °C
-20 °C to 70 °C
IP40 / IP20
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Accessory of
Part number
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