EthMBus-5 SMART

X-Port line

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 and 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.

Main characteristics

M-Bus port
  • Connection of 1 to 5 M-Bus slave devices.
    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 with
    LED status indication.
Power supply
  • Wide range of power supply voltages. DC 9-39.5V or AC 9-27.5V.
  • Overvoltage protection and resettable current fuse.
  • LED power supply indication.
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.

Differences from the EthMBus-5M SMART converter

  • More powerful overvoltage protections on the M-Bus line and the power port.
  • More powerful M-Bus line driver with more efficient filters. The length of the M-Bus line can be more then 1km.
  • Wider range of operating temperatures.
  • More robust mechanical construction.

References

In between years 2011-2018 more than 600 units of the Ethernet to M-Bus converters have been deployed in cooperation with the company IPECON s.r.o. for several custommers in Slovakia and Czech Republic. Converters were used to collect data from utility heat meters into SCADA systems.

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.
  • Converters deployed with trouble free operation in various applications since 2011.
Ethernet communication 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 devices that can be connected 1 to 5 SLAVE devices, idle current max. 7.5mA
Baud rate 300 – 9600 bps
Protection – overvoltage protection TVS 1500W
– 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 9V to 39.5V
AC power supply 9V to 27.5V
Maximum limits of supply voltage – permanent operation at these voltages is not recommended
Minimum power 8.5V DC, 8.5V AC
Maximum power 42.5V DC, 29.5V AC
Protection overvoltage protection TVS 1500W
Power consumption 1.7W to 3W* depending on load and power supply. *short on the M-Bus line
Connector terminal block with plug-in connector for wires of up to 2.5 mm² cross-section area
Status LEDs
Power – green indication of connected supply voltage
Transmit – green indication of data broadcasting on the M-Bus line
Receive – yellow indication of data reception on the M-Bus line
Overload/Short – red indication of M-Bus line overload – flashing (idle current > 8mA),
indication of short on the M-Bus line – turned on (resistance of the line < 500Ω)
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 33 x 57 x 87 mm – without connectors
33 x 57 x 106 mm – with connectors
Protection classification IP40
Weight 136g

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 ± Information sheet
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 / ± 1 kV
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 FIELDS 0.15MHz – 80 MHZ. Power line and 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.

End user

Price list for individuals and companies which do not buy converters for resale.

Pricelist

Integrator

Price list for companies which buy converters for the purpose of resale to their custommers as manufacturers or suppliers.

Pricelist (registered business partners)

The price list is available only to registered business partners.
Registration request.

Registration

Leaflet

Name / File
Date
Size
Promotional leaflet
EthMBus5_SMART_flyer_v1_2_EN.pdf
Date:
20.4. 2021
Size:
292 kB

Manuals

Name / File
Date
Size
Short overview of modes and functions
Ethernet_SMART_features_flyer_v0_13_EN.pdf
Date:
19.10. 2016
Size:
640 kB
Manual
EthMBus5_SMART_manual_v1_2_EN.pdf
Date:
20.4. 2021
Size:
1.21 MB
Web Interface manual
Ethernet_SMART_Web_Interface_v0_53_EN.pdf
Date:
23. 2. 2026
Size:
2,30 MB
Telnet Setup manual
Ethernet_SMART_Telnet_v1_30_EN.pdf
Date:
23. 2. 2026
Size:
1,25 MB
Data exports manual
Ethernet_SMART_exports_v1_06_EN.pdf
Date:
23. 2. 2026
Size:
1,09 MB

Readout software

Name / File
Date
Size
Excel® file for M-Bus data collection and processing
JC-E_readout_v11_6_EN.xlsm
Date:
16. 3. 2018
Size:
228 kB
Manual for the data collecting Excel® file
JC-E_readout_xls_manual_v1_12_EN.pdf
Date:
11.1. 2023
Size:
2.13 MB

Lantronix utilities

Name / File
SW application from Lantronix for advanced configuration of the converters
https://ltrxdev.atlassian.net/wiki/spaces/LTRXTS/pages/106070471/Latest+version+of+DeviceInstaller
SW application for creating a virtual COM port from Lantronix
http://www.lantronix.com/device-networking/utilities-tools/com-port-redirector.html

Warning: Lantronix Com Port Redirector doesn’t work with LITE converters. Those use a different application to provide this type of functionality.

Name / File
Date
Size
Manual EthMBus-5 (2 pin power connector, JC-e webinterface)
Ethernet_MBus_5_manual_v2_8_EN.pdf
Date:
22.9. 2014
Size:
1.15 MB
Manual EthMBus-5 (old firmware, Lantronix webinterface)
Ethernet_MBus_5_manual_v2_7_EN.pdf
Date:
24.6. 2014
Size:
1.13 MB

Note: this manual applies only to the old Lantronix firmware version

Extended Manual EthMBus-5 (old fw., Lantronix webinterface)
Ethernet_MBus_5_navod_uplny_v1_4_SK.pdf
Date:
31.7. 2012
Size:
950 kB

Note: this manual applies only to the old Lantronix firmware version

Top view

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Typical application

Typical wiring of the converter with M-Bus devices, power supply and Ethernet network connection to a computer.

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Connectors on the M-Bus side

Connector Type
M-Bus Connector for connecting M-Bus line. SH-02-5,08
Status LEDs Color
Transmit Indication of broadcasting on the M-Bus line. green
Receive Indication of receiving on the M-Bus line. yellow
Overload/Short Indication of overload or short circuit on the M-Bus line red
– during overload the LED flashes alternately with Receive LED, I > 8mA
– short circuit is indicated with the LED turned on permanently, resistance of the M-Bus line < 500Ω

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Connectors on the Power Supply and Ethernet side

Connectors Type
Power Connector for power supply and earth ground. SH-02-5,08
Ethernet RJ45 Connector for Ethernet. RJ45
Status LEDs Color
Power Indication of correct power supply voltage. green
Link 10Mbps connection speed. orange
100Mbps connection speed. green
Rx/Tx Half-duplex orange
Full-duplex green

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Web Interface

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M-Bus meter table

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Dimensions

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