WebLog120 · Hardware User Manual Version 1.0 - 12/2022
4
WebLog120
2.3 Connectors
The figure below shows the connections in a plan view:
All terminals are pluggable, making wiring and replacing the WebLog120 easier in the event of a fault.
Attention:
Please make sure to put the terminals back correctly in the intended place after removing them.
Incorrectly positioned terminals can lead to defects.
Upper terminals (from left to right):
Type
Signal
Description
USB-OTG
Micro-USB socket (lowest level)
M-BUS
- / +
M-Bus output, lines to the M-Bus meters, 3 pairs in parallel
M-BUS REPEATER
M-Bus Repeater input for network expansion / second M-Bus master
RS232
TX / RX / GND
RS232C Interface, TX = PC transmits, RX = PC receives, GND
POWER
⏚
Protective conductor PE for symmetry binding and to protect the M-Bus
L
Connection of the phase (L) of the mains voltage
N
Connection of the neutral conductor (N) of the mains voltage
