Operating elements, connections and function displays
ZDUE-LTE-PLUS-VII
Page 15 of 62
2.5 Connections on the terminal block, RJ45 socket
The connection of the ZDUE-LTE-PLUS-VII to the supply voltage as well as
the connection of the meters to the ZDUE-LTE-PLUS-VII are made via the 9-
pole terminal block (supply, auxiliary voltage, CL, RS-485) as well as an
RJ45 socket (RS-232).
L
N
HS-
HS+ RTX- RTX+
RT-
RT+
RJ45
Terminal block:
PIN no.
Signal
Function/Comment
1
L
Mains voltage connection
2
N
Mains voltage connection
3
Not documented
4
HS-
Auxiliary voltage -
5
HS+
Auxiliary v
6
RTX-
Current Loop CL1 -
7
RTX+
Current Loop CL1 +
8
RT-
RS-485 RT-
9
RT+
RS-485 RT+
RJ45:
2
DSR
Positive RS-232 voltage (output; always active)
4
GND
Signal GND / cable shield
5
TxD
RS-232 TxD (output)
6
RxD
RS-232 RxD (input)
