MM20-USB
Interface converter
MM20-USB
Interface converter
FEATURES
- Transparent conversion of M-Bus interface to USB interface
- Readout up to 20 M-Bus slave devices
- Short circuit protection of M-Bus line
- Galvanic isolation up to 1kV DC
- LED indications On, Rx, Tx
- Automatic set of data rate and format
- Plug & Play installation
- Power supplied from USB port
- Compatiable with Windows and Linux Operating Systems
- Driver for virtual serial port
DESCRIPTION
MM20-USB is interface converter intended for transparent readout and power supply of M-Bus slave devices. Converter is powered from USB port and galvanically isolated from the M-Bus line. LED indications show power supply presence, data transmit and receive. Data rate and format adjustment is performed according to M-Bus slave device. Converter is designed to withstand short circuit on M-Bus line. Drivers are installed automatically, if for some reason drivers are not recognized you can download them here.
APPLICATION
MM20-USB is suitable for installation and service of M-Bus slave devices. In combination with a laptop, it is suitable for the local setting and reading of heat, water and electricity meters, and other devices that communicate according to M-Bus protocol. Converter acts on M-bus line as standard M-Bus master device which can sustain up to 20 M-Bus slave devices.
TECHNICAL SPECIFICATION
M-Bus interface | M-Bus master, up to 20 M-Bus slave devices, transparent protocol, data rate 300-9600bps; Connection: pluggable screw terminal 5mm, 2.5mm2 |
M-Bus port | quiescent current: 0-30mA, short circuit: 50-70mA with restart function, line voltage: 30.5V ± 5%, internal resistance <100 Ohm |
M-Bus line length | > 12km@300bps, > 4km@2400bps, > 1km@9600bps cable JYSTY nx2x0.8
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Overvoltage protection | tranzorb on M-Bus line
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USB interface | USB 1.1 and USB 2.0 standard; Connection: USB (type B)
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Data rate and format | Automatic, according to M-Bus slave device
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LED indications | On, Rx, Tx
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Galvanic isolation | 1kV DC
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Power supply | From USB port – no additional mains adapter is required
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Operating temperature | -20 do 75°C
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Dimension | 90 x 43 x 20 mm
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