Connecting The Meters; Connecting The Zdue-Gprs-Plus-Vi To The Power Supply - SAGEMCOM Dr. Neuhaus ZDUE-GPRS-PLUS-VI User Manual

3.2 Connecting the meters

CL1 interface
This 20mA current loop interface is
used to connect meters with a current
loop according to DIN EN 62056-21.
Some 4 meters can be connected to this
interface.
Further information:  Page 21
RS-232 interface
This is used to connect a meter with an
interface according to V.24/V.28.
Only 1 meter can be connected to this
interface.
Further information:  Page 22
RS-485 interface (2-wire)
This is used to connect meters with an
RS-485 interface.
Up to 32 transceivers (meters) can be
operated on the bus.
The bus connection is fitted with a Z=120
Ω (nominal) terminator (RT+ to RT-) and
the cable length is limited to 1000m.
The interface is isolated from the mains
connection.
Further information:  Page 22

3.3 Connecting the ZDUE-GPRS-PLUS-VI to the power supply

ZDUE-GPRS-PLUS-VI
The ZDUE-GPRS-PLUS-VI has the meter interfaces described below.
Connect the meters to the terminal block as shown in the illustrations. All of
the interfaces can be used at the same time.
Connection to the power supply is via terminals L and N of the terminal
block. These terminals are dimensioned for lines with a cross-section of up
to 1.5 mm²
L N HS-
Meter 1
Meter 2
Meter n
Meter 1
Meter 1
Meter 2
Meter n
RJ45
HS+ RTX- RTX+
Setup
CL1-
ZDUE
CL1+
ZDUE
DSR
GND
TX
RX
RT-
RT+
ZDUE
RT- RT+
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