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iSMA Gateway
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Meter Gateway with built-in M-Bus to M-Bus IP gateway with power supply for up to 60 devices and Modbus TCP/IP to Modbus RTU Gateway.

Application and Use

The MG-IP multiprotocol meter gateway is designed to simplify the integration of water, electricity, gas, and other meters installed in the building to the BMS using an IP connection. The device allows simultaneous integration of up to 180 meters of various types. The M-Bus interface allows for communication and power supply of up to 60 M-Bus meters. The maximum current must not exceed 130 mA. The RS485 interface allows for the connecting of up to 128 Modbus devices. The device address and Modbus baud rate are set using DIP switches. The built-in TCP/IP interface provides the ability to use an existing LAN infrastructure and allows for distributed meter monitoring systems. The MG-IP device configuration is possible with the built-in web server or dedicated software, the iSMA Configurator.

The Power of Communication

Take advantage of the multiprotocol gateway device to bring your data to the IP network level. With just one compact device, up to 60 M-Bus meters can be integrated into the IP network along with 128 Modbus RTU/ASCII devices.

M-Bus Interface

The M-Bus interface allows for communication and power supply for up to 60 M-Bus meters with a maximum current load of up to 130 mA. This way, up to 60 energy, flow, water, and other types of meters can be powered up and integrated with the M-Bus protocol to a master controller.

M-Bus to M-Bus IP

Bring data from meters to various systems based on the versatility of communication with support for M-Bus TCP/IP and M-Bus UDP/IP protocols.

Modbus TCP/IP to Modbus RTU/ASCII Gateway

Built-in Modbus gateway on the COM1 port enables integration of up to 128 Modbus slave devices to the IP layer.

Two Independent Gateways Operating Simultaneously in One Device

By applying the most popular interfaces for M-Bus and Modbus meters, the device allows for handling up to 180 meters of various types simultaneously.

Simplified Configuration and Commissioning Process

MG-IP allows for seamless configuration with a built-in web server or dedicated free of charge tool. The ability to be powered from a USB port facilitates local testing and a straightforward updating process.


  • M-Bus TCP/IP to M-Bus gateway
  • M-Bus UPD/IP to M-Bus gateway
  • Modbus TCP/IP to Modbus RTU/ASCII gateway
  • Built-in configuration web server
  • Dedicated iSMA Configurator software
  • Built-in power supply for up to 60 M-Bus meters (up to 130 mA)
  • Mini USB allows for powering the device and simplifies the configuration and updates

Technical Specification

Power Supply (Voltage)24 V AC/DC ± 20%
M-BusBus: Up to 60 devices
Baud rate: From 300 to 38400
RS485 interface
Up to 128 devices
COM1Communication protocol: Modbus RTU/ASCII
Ports: Screw connector
Baud rate 2400-115200
ETH1Communication protocol: Modbus TCP/IP
Baud rate: 10/100 Mb/s
Port: RJ45
USB1mini USB: 2.0
Ingress protectionIP rating: IP 40 for indoor installation
TemperatureStorage: -40°C to +85°C (-40°F to +185°F)
Operating: -10°C to +50°C (14°F to 122°F)
HumidityRelative: 5 to 95% RH (without condensation)
Screw connectorsType: Removable screw terminals
Maximum cable size: 2.5 mm2 (18…12 AWG)
HousingMaterial: Self-extinguishing plastic (PC/ABS)
Mounting: DIN (DIN EN 50022 norm)
DimensionsWidth: 36.30 mm/1.43 in
Length: 111.40 mm/4.38 in
Height: 62.00 mm/2.44 in

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