WebLog120 · Hardware User Manual Version 1.0 - 12/2022
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WebLog120
5. Technical Data
5.1 General Data
Operating voltage
110 .. 250VAC, 47 .. 63 Hz
Power consumption
max. 60W
Operating temperature range
0 .. 45°C
M-Bus voltage (no load)
36 V (Mark), 24V (Space)
M-Bus basic current
max. 180 mA
Overcurrent threshold
> 250 mA
Internal bus resistance
8 Ohm
Communication speeds
300 .. 38400 Baud
Maximum cable length for rec-
ommended cable type
JYSTY 1 x 2 x 0,8 mm
Total (all wires): 1km (9600 baud), 4km (2400 baud), 10km (300 baud)
Max. distance to slave (120 slaves at the end of the cable):800 m
Max. distance to slave (120 slaves equally distributed): 1600 m
Galvanic isolation
All interface are isolated from M-Bus and power supply. The Repeater input is addi-
tionally isolated from the other interfaces.
Housing
Light-grey and black PC plastic, protective class IP30
H x B x T: 140 x 90 x 60 mm (height without terminals)
Mounting on a rail (8 HP)
LED indicators
power, communication Master, slave, warning current, overcurrent M-Bus,
M-Bus Activity, Error
Interfaces
2 x 10/100 Mbit Ethernet, 2 x USB-Host, RS232C, RS485, Repeater, Micro-SD
Optional: W-LAN, RS485
Terminals (all pluggable)
3 pair of terminals M-Bus, 3-pin terminal for RS232C, 3-pin terminals für RS485,
2-pin terminal for Repeater, 3-pin terminal for power supply / protective ground
