EMU M-Bus Center

M-Bus data logger with integrated web-server
Internet of things und Industrie 4.0 ready
M-Bus to BACnet IP and OPC UA
Made in Switzerland

Suitable for
20/60/120/250 M-Bus slaves

Visualization: consumption per day / week / month

Integrated high-power M-Bus level converter

Support all meters with M-Bus interface
electric, water, heat, gas

Plug & Play connection to Joulio-Web energy management

Converts M-Bus to BACnet IP

Flexible and expandable

The M-Bus Center is configured entirely using an appealing, user-friendly interface operable with any customary web browser (HTML5). The graphic display shows the IP address configured manually or obtained via DHCP.

M-Bus to BACnet IP Gateway
The M-Bus Center is furthermore an ideal system component for integration into a BACnet IP network. Once an M-Bus meter is registered or imported to a Center, it is immediately readable via the BACnet IP. The M-Bus Center and the registered M-Bus slaves are each detected as separate device objects with a static list of analogue input objects (M-Bus value). Integration into a higher-level BACnet IP system requires no configuration.

General menu navigation

  • Overview of all meters
  • Meter and data logger configuration
  • Backup and data export
  • Status of the M-Bus readout is immediately visible


  • Daily usage
  • Weekly usage
  • Monthly usage
  • Annual usage

Current and historic measurements

  • Meter identification including name, cost centre and location
  • Measurements of the last readout
  • Last readout on specific dates, e.g. end of month

Testing and commissioning

The M-Bus Center with integrated high-power level converter enables rapid configuration and commissioning.
The automated read-out of up to 250 M-Bus slaves guarantees error-free and continuous data acquisition for later analysis and billing.

  • Automatic meter scan
  • Supports M-Bus primary and secondary address
  • 300 to 9600 baud
    2400 baud recommended


  • Meter readout failure
  • M-Bus error flags analysis
  • Monitor for communication with third-party systems
  • Relay outputs for alarm system

Protection of investment

The open communication and Gateway functions allow our energy meters and data loggers to communicate with systems of different manufacturers. This protects your hardware and installation investments.

Plug & Play communication to energy management and billing software.

As an open energy management system, all energy meters with M-Bus are read. If necessary, individual device drivers can be created. All available measured values are archived and transferred to the higher-level energy management and billing system e.g. EMU Joulio-Web

Hard- and Software

  • Integrated high performance level converter
  • MicroSD card for data storage
  • Modular software architecture
  • M-Bus short-circuit and current monitor

Data communication

  • M-Bus to BACnet IP
  • M-Bus to OPC UA
  • Data expot as .CSV and  .JSON
  • (s)FTP Upload

Order information

201.250.00EMU M-Bus Center für 250 M-Bus Zähler (250x1.5mA)
201.120.00EMU M-Bus Center für 120 M-Bus Zähler (120x1.5mA)
201.060.00EMU M-Bus Center für 60 M-Bus Zähler (60x1.5mA)
201.020.00EMU M-Bus Center für 20 M-Bus Zähler (20x1.5mA)


    Product data

    Anzahl M-Bus SlavesMax. 20 / 60 / 120 / 250, (250 x 1.5mA) siehe Bestellinformationen
    AuswertungWebserver / Diagramm geeignet für ISO 50001
    Schnittstellen1 x USB Typ A
    1 x USB Typ B
    1 x Ethernet 10/100 Base RJ45
    Eingänge3 x M-Bus
    4 x S0 Impulseingang
    2 x Temperatur PT1000
    Ausgänge2 x Relais
    M-Bus PegelwandlerHochleistungs Pegelwandler integriert
    Datenexportcsv und JSON Datei, BACnet IP, weitere Formate auf Anfrage
    DatenspeicherMicro SD-Card, SQL
    Firmware-UpdateJa, via Benutzeroberfläche möglich
    BackupJa, via Benutzeroberfläche möglich
    KonfigurationLokal- und Fernkonfiguration mit Webserver

    Technical data

    StromaufnahmeMax. 1A
    M-Bus Baudrate300, 600, 1200, 2400, 4800, 9600
    M-Bus RuhestromMax. 375mA (250 x 1.5mA), siehe Bestellinformationen
    KompatibilitätWärme, Wasser, Gas und Elektro-Zähler mit M-Bus nach EN 13757-2, -3
    (früher EN1434-3)
    Galvanische Trennung, Kurzschluss-
    und Überlastschutz
    EMV-MessungEN 61000-6-2
    StörfestigkeitEN 61000-6-3
    M-Bus NormEN 13757-2,-3
    EnergiemanagementGeeignet für ISO 50001
    BACnet IPB-ASC zertifiziert (2017)
    DisplayLCD Display mit Hintergrundbeleuchtung
    GewichtCa. 400g
    Montage35mm DIN-Schiene
    GehäusePolycarbonat, recycelbar, nicht brennbar