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M-Bus,
what is it ?
The M-Bus (meter
bus) is a cost-optimized field bus for the transfer of energy consumption data.
A central master - in the simplest case a PC with level converter - communicates
by a 2 wire bus with the bus users (up to 250 slaves per segment: Heat meter,
water meter, electrical meter, gas meter... and also sensors and actuators of
any type).
More and more manufacturer implement the electrical M-Bus interface with
protocol layer into their meters. The M-Bus is european standard and described
in the EN1434.
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Advantages of the M-Bus system:
- standard field bus system (EN1434)
- two-wire bus with power supply of the
bus users
- no special requirements to the bus
cable (electricity installation cable or telephone cable is
enough)
- almost any wiring topology (line, star
and tree)
- large extension (up to some kilometers)
- remote reading of consumption data (heat,
water, gas and electricity ..)
- communication with sensors and
actuators of any type
- energy monitoring and - optimization
- leakage monitoring
- applicable in the industry and in
private households
- good availability of system components
- superior costing / performance
relation
- remote read out with modem possible
from any place
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Modell of a M-Bus
installation
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