Products > M-Bus converters > EthMBus-XL SMART

EthMBus-XL SMART, models 20, 45, 80, 120, 190

Ethernet to M-Bus communication converter

Converter for SMART metering

Designed for remote communication with M-Bus meters using the Ethernet computer network in industry, building automation.

In the Smart M-Bus mode the converter works as a server. It communicates with the M-Bus meters independently, processes their data and stores it in its own memory.
The meter data is simultaneously available in form of:

table on a webpage
xml, xml(REST) and csv export
M-Bus protocol communication
e-mail with attached xml, csv exports
exports uploaded to an FTP server

Document with detailed functionality description.

In the basic mode the converter works as a transparent gateway for transfer of M-Bus messages using TCP or UDP Ethernet protocols.

Notice

The Smart M-Bus mode for converter models XL120 a XL190 is limited to 92 addresses for M-Bus slave devices in current version of firmware (Feb 2026 and newer).

Changes in firmware

The latest version of firmware adds important improvements and better functionality to existing features. The list of changes is available in this file.

Main characteristics

The M-Bus converter features a processor controlled monitoring of internal state, power supply state and M-Bus line state. Operation and error states are indicated by status LEDs which simplify and make it easier to troubleshoot possible M-Bus communication errors.

M-Bus port

Connection of 1 to 20, 45, 80, 120 or 190 M-Bus slave devices depending on converter model.
The most commonly used devices are heat, water, gas and electricity consumption meters.
Surge protection warranting above standard level of protection against overvoltage.
Current protection against overload and short circuit on the communication line.
External voltage protection.
Processor controlled monitoring of M-Bus line state with LED indication for various error states.
Indication of M-Bus slave devices reply collision.
Indication of slave devices presence on the M-Bus line.
Indication of M-Bus line overload, short and capacitive overload.

Power supply

Wide range of operating DC power supply voltages 12-30V (20-30V for the XL190 model).
Overvoltage protection.
Processor controlled monitoring of power supply voltage with indication of its correctness and errors.

Ethernet

TCP, UDP protocols and virtual COM port software.
10/100BASE-TX ethernet port, RJ45 connector.

Mechanical construction

Aluminium box with mounting on 35 mm DIN rail.

Main software characteristics Transparent gateway mode: TCP/IP connection - server or client mode - backup IP addresses for connection - connection to a web address (DNS) UDP connection
Smart M-Bus application mode: web page with meter data xml, xml(REST), csv exports e-mails with exports and service information exports uploaded to an FTP server

Software functions

Configuration of the converter through a web interface or Telnet.
TCP and UDP communication in server or client mode including
connection backup IP addresses.
DNS support (host name instead of IP)
Logging of Ethernet activity and error states.
Search for meter addresses and their change (meter must support this functionality).
Success rate statistics for communication with individual meters.

Guarantee of quality

Each converter passes through several functional electrical tests during the production.
Additionally a communication test is performed after final assembly.
EMC certification in an accredited laboratory for industrial environment.
Solid design and construction based on many years practical experience.

Ethernet communications interface
Communications interface	10BASE-T or 100BASE-TX (auto-sensing)
Communication protocols	ARP, UDP, TCP, ICMP, Telnet, TFTP, AutoIP, DHCP, HTTP, SNMP
Connector	RJ45
Compatibility	Ethernet: Version 2.0/IEEE 802.3
M-Bus Master communication interface
Number of attachable devices - XL20	1 to 20 SLAVE devices, idle current max. 30mA
Number of attachable devices - XL45	1 to 45 SLAVE devices, idle current max. 67.5mA
Number of attachable devices - XL80	1 to 80 SLAVE devices, idle current max. 120mA
Number of attachable devices - XL120	1 to 120 SLAVE devices, idle current max. 180mA
Number of attachable devices - XL190	1 to 190 SLAVE devices, idle current max. 285mA
Baud rate	300 - 9600 bps
Protection	- overvoltage protection TVS 1500W
	- electronic protection against external voltage
	- electronic protection against overloads and short circuit on the communication line
	note: converter can withstand sustained short circuit on the communication line
Galvanic separation	up to 1kV from power supply, more than 1kV from Ethernet
Connector	terminal block with plug-in connector for wires of up to 2.5 mm² cross-section area
Power supply
Recommended range of power supply voltages
DC power supply	12V to 30V, model XL190 20V to 30V
Maximum limits of supply voltage - permanent operation at these voltages is not recommended
Minimum DC voltage	11V - min. voltage required for converter operation
Maximum DC voltage	31V - at higher the overvoltage protection starts to activate
Protection	- overvoltage protection TVS 1500W
Protection	- power supply polarity reversal protection
Power consumption	1.8W to 16W depends on converter model and number of M-Bus devices
Connector	terminal block with plug-in connector for wires of up to 2.5 mm² cross-section area
Status LEDs
Power - green	power indication. Indicates a converter malfunction when flashing.
Transmit - green	indication of data transmission on the M-Bus line
Receive - yellow	indication of data reception on the M-Bus line
Meters - yellow	indication of M-Bus meters on the line
Err./Coll. - red	indication of error, overload, collision on the M-Bus line
Note: For further details on LED indication see manual.
Temperature
Operating range	-40°C to 60°C
Mechanical construction
Mechanical design	aluminium box
Mounting	35 mm DIN rail (EN 50022 top hat rail)
Dimensions: height x width x length	38 x 81.5 x 107 mm - without connectors
Dimensions: height x width x length	38 x 81.5 x 125 mm - with connectors
Protection classification	IP40
Weight	230g (XL20, XL45, XL80) 250g (XL120, XL190)

EMC compatibility of the M-Bus converter has been tested according to the following industrial environment standards.

EMC emission tests
Standard	Test	Level
EN 55011	Power line - CONDUCTED EMISSIONS 10/150 kHz - 30 MHz	Class A
EN 55011	RADIATED EMISSIONS (Electric Field) 30 MHz - 1000 MHz	Class A

EMC immunity tests
Standard	Test	Level
EN 61000-4-2	ELECTROSTATIC DISCHARGE (ESD) - Contact discharge	± 4 kV
EN 61000-4-2	ELECTROSTATIC DISCHARGE (ESD) - Air discharge	± 8 kV
EN 61000-4-3	RADIATED RADIO-FREQUENCY ELECTROMAG. FIELD 80MHz - 1GHz	10 V/m
EN 61000-4-3	RADIATED RADIO-FREQUENCY ELECTROMAG. FIELD 1.4GHz - 2GHz	10 V/m
EN 61000-4-3	RADIATED RADIO-FREQUENCY ELECTROMAG. FIELD 2GHz - 2.7GHz	3 V/m
EN 61000-4-4	ELECTRICAL FAST TRANSIENT/BURST - Power line	± 4 kV
EN 61000-4-4	ELECTRICAL FAST TRANSIENT/BURST - M-Bus line	± 4 kV
EN 61000-4-5	SURGE IMMUNITY - Power line. Common/differential mode.	± 1 kV / ± 500 V
EN 61000-4-5	SURGE IMMUNITY - M-Bus line. Cable shielding.	± 4 kV
EN 61000-4-5	SURGE IMMUNITY - M-Bus line. Common/differential mode.*	± 4 kV / ± 2 kV
EN 61000-4-6	CONDUCTED DISTURBANCES, INDUCED BY RADIO-FREQUENCY	10 V
EN 61000-4-6	FIELDS 0.15MHz - 80 MHZ. M-Bus line.	10 V

* test carried out at the request of the manufacturer. The M-Bus port has an increased durability against overvoltage. Carrying out this type of test is not required with the use of shield cable.

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EthMBus-XL SMART, models 20, 45, 80, 120, 190

Ethernet to M-Bus communication converter

Converter for SMART metering

Changes in firmware

Main characteristics

Main software characteristics

Guarantee of quality

End user

Integrator

Promotional leaflet

Manuals for new converters with Smart firmware

Short overview of modes and functions

Manual

Web Interface manual

Telnet Setup manual

Data exports manual

Readout software

Excel® file for M-Bus data collection and processing

Manual for the data collecting Excel® file

Lantronix utilities

Contents

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Home

Products

Meters information

Webshop

About us

Address

Contact

EthMBus-XL SMART, models 20, 45, 80, 120, 190

Ethernet to M-Bus communication converter

Converter for SMART metering

Changes in firmware

Main characteristics

Main software characteristics

Guarantee of quality

End user

Integrator

Promotional leaflet

Manuals for new converters with Smart firmware

Short overview of modes and functions

Manual

Web Interface manual

Telnet Setup manual

Data exports manual

Readout software

Excel® file for M-Bus data collection and processing

Manual for the data collecting Excel® file

Lantronix utilities

Contents