Data sheet
MR-GW
Modbus RTU / Modbus TCP Gateway
Page 1/8
P/N
11083001
EAN 4251394632391
2022/04/04
Version: H
Illustrations
Principle diagram Wiring diagram
See enlarged drawings at the end of document
Product specification
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
Data sheet
MR-GW
Modbus RTU / Modbus TCP Gateway
Page 2/8
P/N
11083001
EAN 4251394632391
2022/04/04
Version: H
Technical Data
Approvals
Open Energy Management Equipment 34TZ
Ethernet interface
Network connection 1 x Ethernet port (RJ-45 IEC 60603-7-51 (2010))
Speed 10/100 Mbits with auto-negotiation
Protocol HTTP 1.0, Modbus TCP/IP v1.0b, Modbus RTU over TCP
(Transparent gateway)
RS485 interface
Protocol Modbus RTU v1.1b3
Transmission parameters
Transmission rate min. 300 Bit/s (Bd) - max. 115200 Bit/s (Bd)
Transmission rate default setting 19200 Bit/s (Bd)
Parity None, Even (default setting), Odd
Stopbits 1 (default setting), 2
Galvanic isolation 1.5 kV
Bus termination resistor 120 Ohm switchable
Number of bus participants 32; with 1 unit load per participant
Supply
Operating voltage 24 V DC +/- 10 % (SELV)
Power consumption (max.) 50 mA
Power loss (max.) 1.3 W
Housing
Dimensions
Dimension (W x H x D) 35 mm x 69.3 mm x 60 mm
Dimension (W x H x D) 1.378 in. x 2.728 in. x 2.362 in.
Weight 64 g
Mounting style Standard rail TH35
Mounting position any
Apposition without distance
Connection type Screw type terminal blocks