PW100 · User Manual Version 1.0 - 11/2020
2.3 Connectors
The following figure shows the top view of the connectors:
All terminals are pluggable
and thus make wiring and
replacement of the PW100
easier in the event of a fault.
Attention: Please make
sure to put the clamps back
in the correct place after re-
moving them. Incorrectly
positioned terminals can
lead to defects.
Upper terminals (from left to right):
Output voltage of the power supply 42VDC (mind the polarity)
Protective conductor (earth) for symmetry and protection of the M-Bus
M-Bus output, wires to the M-Bus meters, 3 pairs of parallel connections
Lower terminals (from left to right):
10/100MBit RJ45 Ethernet socket for network connection
RS485 Interface, 2-wire, B = - / A = + / GND = ground reference
USB connector of the internal USB-to-RS232 converter (FTDI)
RS232C Interface No. 2, TX = PC transmits, RX = PC receives, GND
RS232C Interface No. 1, TX = PC transmits, RX = PC receives, GND
M-Bus Repeater input for network extension
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