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Functions
1.3 Connect meters
1.4 Functionality
Page 10 of 63
GPRS-IP-Telemetry mode
ZDUE as
Meter
IP-Telemetry-Client
The ZDUE-GPRS-PLUS-VI has the following interfaces for the connection of
meters: CL1, RS232 and RS485. The maximum permissible number of
meters can be connected to each of these interfaces simultaneously.
In addition, the device also has an auxiliary power source (9V) to supply the
meters.
For remote reading of the meters by the control centre, the ZDUE-GPRS-
PLUS-VI can connect all of the connected meters to the control centre in
sequence during a single connection. The control centre communicates
therefore with the connected meters directly. The ZDUE-GPRS-PLUS-VI just
transfers the data in both directions without modification. It only adapts
bitrate or data format, if the mode C function is enabled.
The integrated modem of the ZDUE-GPRS-PLUS-VI receives from the GSM
network data calls that have been initiated by the control centre.
The control centre can call
from the GSM network via a GSM modem (up to 9600 bps)
from the fixed network via an analogue modem (up to V.32; 9600 bps)
from the fixed network via an ISDN end device (V.110).
The ZDUE-GPRS-PLUS-VI that is called responds to the telegrams
transmitted by the control centre as follows:
It connects to the meters which are connected to its interfaces (CL1,
RS-232, RS-485).
It receives parameterisation commands and carries them out.
The GPRS mode is described in
chapter 7 - GPRS Mode
7.4 - GPRS-/IP-Server mode
7.5 - GPRS-IP-Telemetry mode
GPRS
Internet /
Intranet
IPT-Master, e.g.
TAINY SwitchingCenter
Meter data and configuration via
IP-Telemetry connection
Control station
ZDUE-GPRS-PLUS-VI
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