UniMod GSM-4
12
7
Programming the Modem
Before installing the modem it has to be programmed in order to meet the
demands. The baud rate and data format for connecting the target device
and the transmission mode and transmission rates must be adjusted. On
delivery the following default parameters are active:
Data rate
9600 Bit/sec (if not differently mentioned)
Data format
7, Even, 1 (if not differently mentioned)
S0=1
This parameter setting determines the number of rings (here 1) before
automatic answering.
&D0
This parameter determines how the modem responds when circuit 108/2
(DTR) is changed from ON to OFF during data mode. With setting 0 the
modem ignores DTR.
E0
This setting determines whether or not the modem echoes characters
received from PC during command state. (0 = no echo)
Q0 V0
Information response: numeric code
+IPR=19200
Internal baud rate:
don’t change this value!
+CBST=7,0,1
The modem selects the bearer service with automatic selection of the
speed, asynchronous, non-transparent mode to be used when data calls
are originated.
This configuration allows for reading standard meters according to VDEW2
(IEC 1107 / IEC62056-21). If you want to change this parameters, you need
a PC with terminal software UniModSet/MetcomTSet. Moreover experi-
ences with the Hayes AT modem command set are very recommended. To
establish connection between PC and modem you have to use the RS232-
Service interface (A) or a parametering adapter (B or C), Alternatively you
can use a converter („converter box“) in order to adapt the interfaces.
A) Service interface: Standard RS232 cable with 9 pole plug (Standard
RS232, Order No.: #4301).
