MMCR-64

MMCR-64

MMCR-64 is a microprocessor two-way full-duplex M-Bus to Modbus converter, with the ability to supply 64 or 128 M-Bus slave devices.

It has both Modbus RTU and Modbus TCP interfaces, which can work independently of each other. It is intended for use in housing constructions and industrial buildings, mainly for distant reading of tax instruments or different types of sensors. Since Modbus has very wide usage and M-bus is a “special” protocol, BMS engineers often have difficulties embedding these two protocols in one system. This is where our converter takes place – being a smart bridge between two industrial protocols. The device is protected from short circuits in the output. Mounting of the unit is done on a standard М36 DIN rail.

User Manual

technical parameters

nominal output m-bus voltage (mark)	35.5 VDC ± 0.5 V
maximum count of m-bus slave devices	64 or 128
maximal output current for m-bus interface	140mA/280mA
output m-bus voltage in condition ‘0’ (space)	22 ÷ 25 VDC
maximum m-bus baud rate	4800bps
maximum RS-485/modBus baud rate	115200bps
maximum devices in RS-485 network	250
maximum devices in ModBus register Map	64/128
power supply	150-250 VAC (200-350 VDC)
power consumption	< 7 W for 64 slaves; < 12 W for 128 slaves
humidity	40 ÷ 90 %
work temperature	from -20° C to +55° C
storage temperature	from -50° C to +90° C
longest distance in the m-bus network with one MMCR	600m
display	6 indicating leds (on, protection, output voltage, over range, collision, receiving)
dimensions (HxWxD), mm	105/107/74 mm
protection class	IP30
weight	430 g
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