User`s manual

Beijing ART Technology Development Co., Ltd.
Chapter 2 Parameter configuration
We have three ways to configure parameters of A-GPRS1090I: these are local COM port configuration, long-distance
configuration and message configuration.
Local COM port configuration mode
Local COM port configuration uses A-GPRS_Config.exe or AT command.
There are two ways can enter local configuration mode, as follow states.
1 Give the power to DTU: when give the power to DTU, it will check whether COM port is appearing blank space; if
appearing blank space, it will consider that the user requires entering the configuration mode. So first we only need send
blank space to COM port before give the power to DTU, second , we must give DTU the power quickly, then we can
enter the configuration mode.
Note: If it receives character “e” when give the power to DTU, it will rest DTU; if it receives character “a”, we can do
AT mandate for SIM300.
2 DTU is working regularly: when DTU is working regularly, we can send characters in table 2.1 to DTU by COM port,
to make DTU exit present work mode, enter the configuration mode.
Table2.1
Pre-idle time Character Idle interval time
Least 100ms +++ is set \r\n Least 100ms
Figure 2.1 Input data transmission
GPRS-Config.exe configuration program
The way of A-GPRS1090I enters to the configuration mode: (first do not give the power to mode)
1 Connect the COM port with the mode.
2 Click the “enter configuration status” button, and then give power to A-GPRS1090I quickly. (Show as figure)
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