Beijing ART Tech A-GPRS1090I, User Manual

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Beijing ART Technology Development Co., Ltd.
There are three modes of A-GPRS1090I to work
：
“online forever”, “idle winding”, “ idle power-down”.
„
Online forever: Mode will connect to the server which has been set when give module the power, then the
data can be transmitted at any time.
„
Idle winding: Mode will connect to the server which has been set when give module the power, the
module will disconnect with server if there isn’t any data be transmitted in a time, then enters to the
sleeping mode. Communication idle time can be configured by using "idle time line (IDLETIM)"
command of the "transmission control", the shortest time is 30 seconds, the longest time is 65,536
seconds, stepping is a second. If the module disconnects with the server, there are three ways to enable
re-establish connection between the module and the server.
The first one is that we send the data to module serial port; the module will send these data after it
has connected to the server successfully.
The second is that it is woke up by telephone call, the telephone number is the same as the SIM
card number, as long as user calls this number to connect, until the tone ring is more than 2 to hand up
initiatively, then the mode will re-establish a connection between the server, in other words, the
equipment is woke up.
The third is that it is waked up by message. Users write the number which can wake up the module
in any “message authenticated users”, the number format is “+861 **********”. Message command
format is 888888: Wakeup.
Sending message after the connection is successful, it will return back a message, the message content is
“OK”, then a successful connection between the server and the mode is re-established, the equipment is
woke up.
„
Idle power-down: idle power-down and idle winding’s work mode are similar, the difference between
them is that if module works in the idle power-down, once it disconnects from the server, it will cut off
the power that be supplied to the GPRS module, and the entire system enters the power-down state,
achieve low-power purposes. When system in the power-down state, the whole power consumption is less
than 14mA, is suitable for battery-powered and intermittent communication occasions.
In the "idle power-down" mode, there is only one way to establish a connection between the module
and the server (wake up module equipment), to send data to the module serial port, the module will
connect to a server device after the data is sent successfully.
DTUMODE
This parameter is used to set module function mode, when DTUMODE is configured to "CLIENT", the module will
serve as the client to connect the data center server initiatively. When DTUMODE is configured to "SERVER", the
module will serve as a server waiting for the client to connect. In the peer-to-peer functionality, one module will be
configured as "SERVER", the other is configured as "CLIENT".
SVRIP
，
SVRNAM
，
SVRPORT
，
CNTMODE
A target server configuration includes IP address and port number, if the server does not have a fixed IP address, you can
use the domain name. When the server IP address is validity, the domain name will be ignored. In communication
network, it has TCP and UDP communication. TCP communication which is based on the connection method of
communication, one communication is the server; the other party is the client. In the initial state, the state of the server is
listening, waiting for the client to connect; however the client will need to take the connection to a server initiatively, in
practical application, data centers are usually used as the server mode, while the module is usually the client mode. In
TCP communication, any party after receives each other's data packets must be carried out the response, so this approach
has the advantage of reliable communication, but communication speed will be slower than UDP mode. UDP is not
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