How it works
ZDUE-LTE-PLUS-VII
Page 11 of 62
1.4 AT mode
The AT mode allows and requires the direct control of the mobile radio
module integrated in the ZDUE-LTE-PLUS-VII by means of AT commands.
The AT commands can be entered via a meter interface.
All other functions (e.g. IP server mode, IP telemetry mode, control /
parameterisation per EN 62056-21 etc.) are not available in AT mode.
1.5 Connection of meters
The ZDUE-LTE-PLUS-VII following interfaces for connecting meters: CL1,
RS232 and RS485. The maximum permissible number of meters can be
connected to each interface at the same time.
CL1
RS-485
RS-232
Rx
Tx
GND
DCD
max. 1000 m
max. 32 meters
approx. 4
meters
CL0
CS
(20 mA)
Interfaces
Head-End-System
with communication
software
Modem
ZDUE
-GSM
-PLUS
-V
1 meter
Modem
Auxiliary
power
source
(9V)
HS+
HS-
In addition, the device has an auxiliary voltage source (9V) for supplying
meters.
All meters connected to the ZDUE-LTE-PLUS are simultaneously connected
to the Head-End-System via a single connection. The Head-End-System
addresses the connected meters directly and communicates with them.
The ZDUE-LTE-PLUS-VII only passes the data in both directions and, if
necessary, adjusts the bit rate and character format.
1.6 Access protection
... by password
To protect against unauthorised access, a password query can be
configured. In this case, the ZDUE-LTE-PLUS-VII requests the agreed
password from the remote terminal, which must be given to it within the
configured time period (password timeout). If the password is incorrect or the
timeout is exceeded, the ZDUE-LTE-PLUS-VII will disconnect from the
remote terminal. The password can be parameterised.
Содержание Dr. Neuhaus ZDUE-LTE-PLUS-VII
Страница 1: ...ZDUE LTE PLUS VII User manual...
