Communication mbus

  • How does a M-Bus work?

    The M-Bus works as a Fieldbus to log, analyze, optimize, and control energy and process data.
    This Bus is made for communication on two wires, making it cost-effective.
    The M-Bus fulfills the requirements of electric-powered or battery-driven systems, including consumer utility meters..

  • How does M-Bus protocol work?

    The M-Bus is a typical single-master bus in which the master makes requests and picks up the data from the slaves.
    The M-Bus uses two-wire cables that are going from the Master/Repeater to each device (bus structure).
    When requested, the meters deliver the data collected to the common master at periodic intervals..

  • How does wireless M-Bus work?

    Meters with Wireless M-Bus transmit data to the gateway on a regular basis – typically a few seconds or minutes between each transmission.
    The secure and encrypted Wireless M-Bus data can assure reliable billing data to the utility company, as well as near real-time visualization data to the user..

  • What is an M-Bus network?

    M-Bus (Meter-Bus) is a European standard (EN 13757-2 physical and link layer, EN 13757-3 application layer) for the remote reading of water meter, gas or electricity meters.
    M-Bus is also usable for other types of consumption meters.
    The M-Bus interface is made for communication on two wires, making it cost-effective..

  • What is M-Bus communication?

    M-Bus Communication
    M-Bus is a communication protocol used between meters and the central data collection system or Pre-Payment unit.Dec 14, 2020.

  • What is M-Bus used for?

    M-Bus or Meter-Bus is a European standard (EN 13757-2 physical and link layer, EN 13757-3 application layer) for the remote reading of water, gas or electricity meters.
    M-Bus is also usable for other types of consumption meters, such as heating systems or water meters..

  • What is the communication speed of M-Bus?

    The M-Bus supports standard communication speeds of 300 to 9600 bps.
    The speed of 2400 bps is most often used, it is also the default set speed for most meters..

  • What is the difference between M-Bus and Modbus?

    M-Bus is a bus especially used to transmit counter data.
    Its data transmission capacity, speed and quantity can fully meet the requirements.
    It has the characteristics of long-distance transmission using low-cost cables.
    Modbus is a serial communication protocol..

  • M-BUS is the main bus used for energy metering and intelligent meter management, i.e. separate recording of heat, water, electricity and gas consumption.
    R-KEY-MBUS is a converter capable of reading, converting and transferring data from ModBUS RTU/TCP-IP to up to 25 Meter-BUS instruments and vice-versa.
  • Meters with Wireless M-Bus transmit data to the gateway on a regular basis – typically a few seconds or minutes between each transmission.
    The secure and encrypted Wireless M-Bus data can assure reliable billing data to the utility company, as well as near real-time visualization data to the user.
  • The M-Bus is a hierarchical system, with communication controlled by a master (Central Allocation Logic).
    The M-Bus consists of the master, a number of slaves (end-equipment meters) and a two-wire connecting cable: see Figure 8.
    The slaves are connected in parallel to the transmission medium - the connecting cable.
  • The M-Bus supports standard communication speeds of 300 to 9600 bps.
    The speed of 2400 bps is most often used, it is also the default set speed for most meters.
M-Bus Communication M-Bus is a communication protocol used between meters and the central data collection system or Pre-Payment unit. Widely used on new projects where the building infrastructure can be designed accordingly. M-Bus is available on a wide variety of gas, heat, electricity, and cold / hot water meters.
MBus provides Fast and Accurate Remote Data The ability of MBus technology to read data faster from virtually anywhere eliminates manual reading errors made by field personnel.
Normally, an M-Bus system consists of only a single segment, which is connected via a local repeater or converter to a Computer (PC) or a Data Collection Unit (DCU) acting as master. Such local repeaters convert the M-Bus signals into signals for the communication interface or port on the Data Collection unit.
The M-Bus (“Meter-Bus”) is a new European standard for remote reading of heatmeters and it is also usable for all other types of consumption meters as well 
The M-Bus interface is made for communication on two wires, making it cost-effective. A radio variant of M-Bus (Wireless M-Bus) (circle-link) is also 

Comment interfacer un produit sur une liaison M-Bus ?

La communication sur une liaison M-Bus se veut lente mais robuste

Pour interfacer un produit sur la liaison M-Bus, il faut convertir l'UART issue du microcontrôleur en communication M-Bus

Cette interface utilise toujours le TSS721, avec quelques composants externes

Voici le schéma typique d'une interface M-Bus :

Quelle est la vitesse de communication d'un M-Bus ?

La vitesse de communication (baudrate) doit pouvoir aller de 300 baud à 38400 baud

Les baudrates typiques sont de 2400 baud et 9600 baud

Il existe aussi une possibilité d'adaptation automatique (Autobaud ou Auto speed mode)

La communication sur une liaison M-Bus se veut lente mais robuste

Quels sont les avantages d’un M-Bus ?

M-Bus permet par ailleurs de recueillir des données à partir de plusieurs appareils de mesure dans un système central SCADA, par exemple

Une seule unité M-Bus Master peut effectuer un relevé jusqu’à 250 mètres et prendre en charge jusqu’à 2 800 m de câble

Communication mbus
Communication mbus

Topics referred to by the same term

MBus is a computer bus designed and implemented

MBus is a computer bus designed and implemented

MBus is a computer bus designed and implemented by Sun Microsystems for communication between high speed computer system components, such as the central processing unit, motherboard and main memory.
SBus is used in the same machines to connect add-on cards to the motherboard.

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