Communication
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10.7 GPRS module
The GPRS module is used for data acquisition over a mobile network
*
), using
open standard protocols
**
) in push mode (as Email, HTTP, FTP, SMS) or pull
mode as transparent M-Bus (GSM, TCP). The integration into billing systems
happens via selectable report templates.
The module is configured by SMS messages. A firmware update is possible at
any time (“Over the Air“).
The module includes an integrated M-Bus Master, which allows to read out up
to 8 additional M-Bus Meter (so-called slaves). The meter data can be stored
and send at configurable intervals. In addition, “ad hoc“ readings are possible.
Connection M-Bus
Screw terminal 0.25 to 1.5 mm²
Power supply
via power supply (calculator)
Nominal voltage
100 - 240 V AC
Voltage range
-20 % to +15 % of nominal voltage
Frequency
50/60 Hz
Power consumption (Max)
< 2.5 VA
Power consumption (Nom)
< 1 VA
Installation / overvoltage
CAT 2
GPRS Class
12
Band
850 / 9000 / 1800 / 1900 MHz
Operating temperature range
-30 to +55°C
Storage temperature range
-40 to +85°C
Operating humidity max.
80 % RH
Pollution
Grade 2
Operating altitude
0 - 2000 m
Indoor use only
Yes
LED Indication
green, yellow, red
M-Bus standard
13757
M-Bus baud rate
300 and 2400 Bit/s
Transparent M-Bus
Listening server on TCP and GSM data
Maximum connected M-Bus slaves
8
Maximum cable length
1000 m
Real Time Clock Backup
3 days
Real Time Clock Accuracy
< 2 sec / day
Data storage (Data logger function)
1.3 MByte
*
) SIM card is required
**) Communication protocols
•
E-Mail using SMTP with authentication mode HELO, EHLO
•
FTP passive mode with authentication and remote directory change
•
HTTP POST and GET
•
GSM data Transparent M-Bus @ 300 and 2400 baud and GSM data console
•
TCP Transparent M-Bus @ 300 and 2400 baud and TCP console
•
SMS for configuration
•
Internet time synchronization using NTP or Daytime protocol
