9 Technical data
Electrical (M-Bus)
Number of slaves per master
250 at 1 unit load per slave
Total number of slaves
1250 at 1 master and 4 repeaters
Cable length per master
Up to approx. 2800 m, depending on cable type, cable
topology and number of connected slaves
Total cable length
Up to approx. 14 km at 1 master and 4 repeaters
Cable thickness
Max. 2 mm
2
Communication ports
RS-232, RS-485, USB
Communication speeds
300/2400/9600 baud
Data frame
1 start bit, 8 data bits, 1 parity bit (even), 1 stop bit
Addressing modes, transparent
Primary/secondary/enhanced secondary
Addressing modes, direct reading
Primary/secondary
Address range, primary
001-250
Address range, secondary
00000000-99999999
Address range, enhanced secondary
00000000-99999999/00000000-99999999
Bus mark/space
41 V DC/28 V DC
Detection level, communication
7 mA
Detection level, collision
25 mA
Max. normal operating current
375 mA
Warning level, operating current
377 mA
Overload level
500 mA
Electrical (in general)
Power supply
100-240 V 50/60 Hz
Power consumption
Max. 40 W
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