USR-GPRS232-DTU USR MANUAL
Page 21 of 38
Jinan USR IOT Technology Limited
Serial AT commands and network AT commands:
Serial AT commands and network AT command, when the module is operating in transparent mode data,
supported by two extensions.
Which, after serial AT command is enabled, you can transfer data through the serial process, using a specific
packet header to send AT commands to the command module to modify parameters, sending alarm messages and other
operations;
AT instruction realize network functions and serial AT commands similar server can send the next packet header
specific instructions to send AT commands to the module to operate other operating module to modify parameters.
To use the serial port or network AT command AT commands, you need to enable this feature, enable the method:
Method One,When the module start
，
with in five seconds, through the serial port to send "AT + CINETAT = 1 <CR>",
enable the network AT command functions; via serial port to send "AT + CICOMAT = 1 <CR>", enable serial AT
command functions.
When the module is operating in transparent data transfer mode, which can use the "PSW, CMD" format to send
AT commands to set or parameters of the DTU to read, send text messages and other operations.
The second method is set when using the setup software module for transparent transmission mode, select Settings area
below the operating mode "Full Display", after the screen, select the check box corresponding functions.
