semaphore TBOX LT2-530 Series, Руководство пользователя, Страница: 62 / 197

Version : 1.09 62
Sending of SMS with GSM configured in GPRS/3G
While connected in GPRS and a SMS has to be sent through the classical SMS-Center,
TB
OX
LT2
will
automatically disconnect, send the SMS and reconnect.
GPRS IP settings
GPRS represents a TCP/IP connection using GSM network. It then requires a TCP/IP configuration.
Obtain IP address
automatically:
The IP address is provided by
the Operator at the connection.
Use IP address:
Don’t use it with GPRS
connection.
Obtain DNS server addresses
auto.:
The Operator provides you with
DNS.
Use DNS Server addresses:
Don’t use it with GPRS
connection.
Even when working with fix IP address, it does need to be declared. IP address is always
provided by the operator during connection.
Using TWinSoft to communicate to an RTU in GPRS/3G
Typically, TWinSoft will access
TB
OX
LT2
from a LAN, using an Ethernet connection (in case your LAN
has a Gateway connection to Internet).
In order to have a reliable communication, you have to increase some timing parameters in TWinSoft:
menu ‘Communication’

‘PC Setup’; select ‘Ethernet’ and click ‘Advanced...’.
Change ‘Comm. Timeout’ to 5000 ms. or higher
Change ‘Inter-Frame Gap’ to 10 ms.
Before sending a program through GPRS, check the PC setup settings of TCP/IP, like
explains chapter 5.3.3. IP address settings, point 3.