MM20 is interface converter intended for feeding and transparent reading of M-Bus slave devices. Converter has RS-232, RS-485 and Ethernet interfaces, where the lowest priority is dedicated to RS-232 and the highest to Ethernet interface. It is designed to withstand short circuit on M-Bus line. LED indicators show status and activity of M-Bus line, slave devices and Ethernet port. Power supply has wide range, from 10 up to 28Vdc. Device is suitable for 35mm DIN rail mounting.
DECODE MM20 acts on M-Bus line as standard M-bus master device which can sustain up to 20 M-Bus slave devices. It can be used for local or remote reading of calorimeters, water meters, electricity meters and other devices which fulfill M-Bus protocol. Converter is fully adjusted for industrial communications, automation processes and telemetry. For increasing system capacity, it is possible to connect more than one MM20 converter in parallel.
|M-Bus interface||M-Bus master, up to 20 M-Bus slave devices, transparent protocol, speed 300-9600Baud; |
Connection: Pluggable screw clamp, RM 5mm, 2.5mm2
|Serial interface||RS-232 DCE, RS-485; Connection: DB9 female|
|Ethernet interface||IEEE 802.3, 10/100 Base-T, UDP and TCP/IP; Connection: RJ45|
|LED indicators||ON, Short, Slave, Ethernet|
|Overvoltage protection||tranzorb on RS-485 line and M-Bus line|
|M-Bus port||quiescent current: 0-30mA, overcurrent: 50-70mA with restart, line voltage: 30.5V 5%, internal resistance <100Ohm|
|M-Bus line length||max 12km@300Baud, min 1km@9600Baud, cable JYSTYnx2x0.8|
|Power supply||10 – 28VDC, 6Wmax|
|Power supply connection||Pluggable screw clamp, RM 5mm, 2.5mm2|
|Working temperature||0 do 55°C|
|Mounting||35mm DIN rail|
|MM20-24E||10324||Interface converter with RS-232, RS-485 and Ethernet interfaces||€255|
|MM20-24||10325||Interface converter with RS-232 and RS-485 interfaces||€179|
*Minimum functionality kit needs to include the device and an appropriate power supply. Please note that all accessories are sold separately.
|UTP patch cord||21749||UTP patch cord 5E 2m crossover|
|PS-1212-AD||10261||AC/DC adapter, DC12V 12W, AC100-240V 50/60Hz|
|PS-2415-DIN||23601||Power supply, DIN rail mount, DC24V 15W, AC85-264V 50/60Hz|
|CB-DB9MF-2M||21745||Serial Cable Assembly 1.8~2m, DB9 Male to DB9 Female|
|ANT-GSM-M||23266||GSM antenna, Magnetic mount, cable 2.5m, 2.2 dBi, SMA, quad band|