М-bus (Meter-bus) is a new European standard for remote reading
of tax instruments and different types of sensors. The reading
is accomplished by several different methods - from direct reading
of current indication of the instruments to fully remote reading
of all devices in the net by GPRS technology. The use of M-bus
interface allows fully electronic reading of data with all the
benefits of it. М-bus supply converters are the basic device,
and all the net is build on it.
In some cases more than 250 slave devices (which is standard
maximum) must be connected in single m-bus network. In this
situation m-bus repeater device must be used to accomplish the
task. These repeaters have m-bus input and output and they simply
expands the network to more slave devices. Of course special
addressing modes are used for slaves. Our repeaters are two
variants - expanding the net with 64 or 250 slaves.
Catalogue
for remote readings
Microcontroller two-way full-duplex M-bus to M-bus
repeater, with ability to expand existing net up to
250 additional m-bus slave devices.
Details
Microcontroller two-way full-duplex M-bus to M-bus
repeater, with ability to expand existing net up to
64 additional m-bus slave devices.
Details
Generally we offer two types of m-bus repeaters: for small
expand up to 64 slaves, and for big expand up to 250 slaves.
Both types have m-bus input and output interface. Input
and output are galvanically isolated. All types of M-bus
repeaters are powered from standard power supply 220/230
VAC, and they can work without problems down to voltage
of 170 VAC. Outputs are protected to short circuit and high
voltages.
Special precautions are taken to avoid eventual attempts
of data manipulating, read by the devices. For that purpose
M-bus supply units do not record any data - they are just
transceivers (except some service data). The service data
is written once by the manufacturer or when installing the
device and setting the system.