Kamstrup M-Bus Master MultiPort 250D Installation And User Manual page 46

M-Bus Master MultiPort 250D
11 Technical data
Electrical (M-Bus)
Number of slaves per master
Total number of slaves
Cable length per master
Total cable length
Cable thickness
Communication ports
Communication speeds
Data frame
Addressing modes, transparent
Addressing modes, direct reading
Address range, primary
Address range, secondary
Address range, enhanced secondary
Bus mark/space
Detection level, communication
Detection level, collision
Max normal operating current
Warning level, operating current
Overload level
Electrical (GSM 6H)
Frequencies
Transmitting power 900 MHz Class 4
Transmitting power 1,800 MHz Class 1
GPRS classes
Communication speeds GSM
Communication speeds GPRS
46
250 at 1 unit load per slave
1250 at 1 master and 4 repeaters
Up to approx. 2800 m, depending on cable type, cable
topology and number of connected slaves
Up to approx. 14 km at 1 master and 4 repeaters
Max 2 mm
2
RS-232, RS-485, USB, optical eye
300/2400/9600 baud
1 start bit, 8 data bits, 1 parity bit (even), 1 stop bit
Primary/secondary/enhanced secondary
Primary/secondary
001-250
00000000-99999999
00000000-99999999/00000000-99999999
41 V DC/28 V DC
7 mA
25 mA
375 mA
377 mA
500 mA
900-1800 MHz phase II+
2 W
1 W
8, B
300/2400/9600 baud
300/2400 baud
Kamstrup A/S • 5512853_C1_GB_01.2017