Connectors In The Terminal Compartment; Interfaces At The Housing - Relay PW250 User Manual

2.2 Connectors in the terminal compartment

PE / PE
L / N
M-Bus + -
M-Bus IN Repeater
RS485 A B
RS485 Term
RS232 RX,TX,GND
Attention: When laying the cables in the terminal compartment, please take care that the light pipes are not
blocked by cables after closing the housing cover.

2.3 Interfaces at the housing

Ethernet
Ethernet
RS232
USB Device
Cable glands
PW250 · User Manual Version 1.1 – 11 / 2019
-
+
Protective conductor (earth)
Main power supply 110VAC to 240 VAC, to be connected only by electricians
M-Bus output, wires to the M-Bus meters, 3 pairs of parallel connections
M-Bus Repeater input for network extension
RS485 interface, 2-wire, A = + / B = -
Terminator for RS485 interface, jumper placed (default) = 120 Ω
RS232C interface, RX = PC receives data, TX = PC transmits data, GND
RS232C USB
10/100MBit RJ45 Ethernet socket for network connection
RS232C D-SUB9 socket
USB connector of the internal USB-to-RS232 converter (FTDI).
for power supply, M-Bus, RS232C, RS485 and M-Bus IN
Cable glands
PW250
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