Interfaces; The Gsm Interface; Meter Interfaces - SAGEMCOM Dr. Neuhaus ZDUE-GPRS-PLUS-VI User Manual

Interfaces

4 Interfaces

4.1 The GSM interface

Characteristics

4.2 Meter interfaces

Characteristics
Number of meters
Page 20 of 63
Communication with the GSM network takes place via an integrated GSM
module. Data transmission is according to the following standards:
GSM Rec. 7.02 asynchronous, RLP acc. to GSM Rec. 4.22,
Analogue modem type V.32 or ISDN type V.110
The meter interfaces of the ZDUE-GPRS-PLUS-VI are all parameterised
jointly, i.e. so that all of the interface parameter settings apply equally for all
meter interfaces.
The following values are supported by the meter interfaces:
Data
Default: 7E1
format:
Settable: 7E1, 8N1, 8E1
Handshake: No hardware/software handshake.
Interface
Default:
speed:
Settable: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400
baud.
 The speed of the meter interfaces should not exceed the
speed of the GSM connection (9600 bit/s), because
otherwise data loss may occur.
Meters can be connected to and operated on all of the interfaces at the
same time, but only up to the specified maximum numbers.
In communication with the connected meters, all of the interfaces are
addressed simultaneously, i.e. no application (e.g. control centre) can
address any interface selectively. This means that unique addressing of the
meters is essential in order to prevent the transfer of data by several meters
at the same time.
300 baud (Mode C)
ZDUE-GPRS-PLUS-VI