WebLog120 · Hardware User Manual Version 1.0 - 12/2022
11
WebLog120
5.2 Interface Data
RS232C
Driver load
Current max. 5mA,
resistive: min. 3kΩ, capacity: max. 2,5 nF
Voltage transmit (at 3kΩ)
Mark: +5V ≤ U
T
≤ +15V
Space: -
15V ≤ U
T
≤
-5V
Voltage receive
Mark: +2,5V ≤ U
R
≤ +15V
Space: -
15V ≤ U
R
≤
-2,5V
RS485
Driver load
Current max. 250 mA, resistance min. 54Ω
Signal voltage TX
Space (0): +1.5V
U
t
+5.0V
Mark (1): -5.0V
U
t
-1.5V
Addressing
Not possible (transparent)
Max. cable length
3,0 m
Repeater
Current M-Bus IN
Basic current < 1,5 mA (1 Unit Load), TX current typ. 15mA
Capacity
Max. 250 pF
Galvanic isolation
> 2,5 kV to all interfaces, M-Bus and power supply
USB
Type
USB 2.0 device, socket type B
USB IC
FTDI Chip: FT232R, Vendor ID = 0403, Product ID = 6001
Power supply
Bus powered, Low Power (max. 90mA)
Max. cable length
3,0 m
Ethernet
Network interface
10/100BaseT (RJ45), auto-MDIX, with 2 LEDs
5.3 Ordering information
Article number
Description
WEBLOG120
Web-based M-Bus Central for 120 meters
KA003
Power cable (German connector), length 2m
KA PATCH.5E RJ45 1M
Network patch cable CAT5E FTP, Length = 1m, grey
KA006
Serial D-SUB-9 female cable with 3 open wires
EWLAN
WiFi adaptor extern