ZDUE-GSM-PLUS-V Installation Instructions
2
Connecting the device
First connect the meter to the device and then connect the
power supply.
The device is equipped with 3 different meter interfaces,
which are wired in parallel.
RS232 interface (RJ45 jack):
Pin
Signal
Description
2
DSR
Output; Always active
4
GND
Signal ground
5
TXD
Output; Data to meter
6
RXD
Input; Data from meter
Signals and levels according to V.24 / V.28.
All other pins are reserved.
RS485 interface (terminal block):
Signal
Description
RT-
Negative RS-485 interface signal
RT+
Positive RS-485 interface signal
Dual-wire RS485 interface to connect up to 32
transceivers. The bus connection is terminated to
Z=120 Ω (nominal) (RT+ to RT-) and the cable length
is limited to 1000m.
CL1 interface (terminal block):
Signal
Description
RTX-
Negative CL1 interface signal
RTX+
Positive CL1 interface signal
20mA power interface (current loop) to connect meters
with the power supply interface according to DIN EN
62056-21. Approx. 4 meters can be connected to this
interface.
The CL1 interface is optional. Devices without CL1
interface do not contain RTX- / RTX+ terminals.
Please refer to the label of the terminal block.
Important:
If no meter is connected to the CL1 interface, the
RTX- and RTX+ contacts need to be short-
circuited. Otherwise, the other interfaces will not
operate.
Auxiliary power source (HS; terminal block):
Signal
Description
HS-
Negative pole of the auxiliary power supply
HS+
Positive pole of the auxiliary power supply
Auxiliary power supply of 9V / max. 100mA
The auxiliary power supply is not available for all the
ZDUE-GSM-PLUS-V models.
Power supply (terminal block):
Signal
Description
L
AC: U
nom
= 100VAC ... 230VAC
DC: U
nom
= 60VDC ... 100VDC
N
I
nom
= 84mA … 42mA
Connecting the antenna
The antenna is connected to the Type SMA antenna jack
(ANT). The antenna should be installed to ensure
adequate signal quality. Make sure that there are no large
metal objects (e.g. reinforced concrete) near the antenna,
since they will have an adverse affect on signal quality.
Please observe the safety instructions at the beginning of
this manual when installing the antenna. Have this
installation done by a qualified professional! Be sure to
observe the instructions included with your antenna.
Light-emitting diodes (LEDs)
Status LED (2) / Green & Yellow with light pipe
Permanently green
Supply voltage available
Permanently yellow
GSM module on
Depending on the firmware version, both LEDs may be off in
case of a missing or defect SIM card.
Current Loop LED (11)
Permanently green
Meter connected to the CL1
interface or CL 1 interface short-
circuited.
GSM-Status-/Error LED (1) / Orange
3s on / 3 x flashing
Network search
3s on / 2 x flashing
Error status
3s on / 1 x flashing
SIM/PIN error
Permanently off
Signal strength unknown
3s off / 1-4 x flashing
Signal strength (1=low; 4=high)
Permanently on
GSM connection active
This LED operates in meter mode only.
Service push button (7)
Push the button 1x
for more than 5
seconds.
The parameters being set by EN 62056-
21 commands will be deleted and the
factory settings are reloaded.
Push the button
when switching
the power on.
The actual firmware version will be output
at the local interface (19200bps; 8N1).
The service push button operates in meter mode only.
Copyright Statement
The information published in this document is under copyright. Any
translations, reprints, reproduction and storage in data-processing systems
require the express prior consent of the manufacturer.
Subject to technical modification.
All trademarks and product names are trademarks, registered trademarks or
product names of the respective owners.
All information is based on the information provided by the manufacturer.
No guarantee or liability will be assumed for any error or omissions.
The contents of this handbook and the technical specifications may change
without prior notice. The descriptions of the specifications in these
instructions do not in any way represent a contract.
© Dr. Neuhaus Telekommunikation GmbH
Doc.-No. 8191AD013 / Version 1.3 / May 2016
