Customer solution: M-Bus to Ethernet communication converter - EthMBus-5

We introduce to you a modern communication converter intended for connection of industrial M-Bus devices to the Ethernet, using the LAN/serial interface module XPort.
This is an archive article published 09/11/2012. Some information may no longer be up to date and in line with the current state. Please contact us in case of interest.

The communication converter is used in industry and building automation for data acquisition from heat consumption meters, flow meters, power consumption meters etc. It supports a connection of 1 to 5 M-Bus slave devices and a bus with devices connected can reach up to a few hundreds of meters length, depending on a connection quality, communication speed and additional protections. Connection of the interface module with a PC application can be realized by a virtual COM port, or directly through a TCP/IP connection. Connection through a virtual serial port is suitable for older programs, suitable only for a serial communication interface. Configuration of the interface module is possible via a password protected web interface.
Main Features
A construction of the interface module is based on practical experience from implementing of communication interfaces in an industrial environment. In order to reach a high reliability and immunity, the module has an above-standard protection against overvoltage. M-Bus port is resistant to a continuous shortcut, overload and it contains a filter increasing the resistance of communication to disturbances. M-Bus port is galvanic isolated from power supply, as well as from an Ethernet interface, to ensure a high overvoltage immunity and it prevents ground loops creation. A range of a DC and AC power supply has a wide range and the power supply port has an overvoltage protection, as well as a self-resettable PTC current fuse.. The module is in a robust aluminium enclosure, with a possibility of mounting to a 35mm DIN rail. For a simple assembly and replacement is the connection of leads realized by plug-in connectors. Operation statuses are indicated by six LEDs for a quick detection of an actual module status, its work and an indication of possible communication errors. The „overload/short“ LED diode differs two basic M-bus link error statuses. A shortcut is indicated by a continuous light and an overload by blinking.
Customer solution: M-Bus to Ethernet communication converter - EthMBus-5

Quality guarantee, references
● EMC certification in an accredited laboratory, for an industrial environment with a more stringent immunity testing.
● Precise design and construction based on a long-term practical experience and a long-term operation of a big amount of interface modules in demanding conditions at customers from Czech republic and Slovakia.
● Every interface passes during a production a series of electric tests and by a final functional test.
Main specification of the EthMBus-5 communication converter
Ammount of M-Bus devices to be connected : 1 to 5 SLAVE devices
Transfer rate : 300 - 9600 bps
Overvoltage protection : M-Bus port, power supply
Current fuse : M-Bus port, power supply
Galvanic isolation of the M-Bus port : from power supply, from Ethernet
Power supply voltage : DC 10-33V, AC 12-24V
Power consumption : 1,7 to 3W depending on a load
Operating temperature : -40°C to 60°C
Dimensions : 33 x 57 x 106mm

Orders and further information


  • Connection of 5 M-Bus slave devices
  • 100/10 Mbps ethernet
  • TCP or UDP telegram transfer.
  • Simple web interface for configuration
  • Wide range of a DC and AC power supply.
  • Protections, fuses and filters ensuring a high imunity of a whole interface to surges and disturbances
  • Versions of modules with an RS232/RS485 to M-Bus interface.

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