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USR-GPRS232-DTU USR MANUAL www.usr.so
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Jinan USR IOT Technology Limited tec@usr.cn
About the meaning of the module parameters that can be set, refer to " operating modes Introduction "
Description chapter.
4.3 Other setting methods
DTU in the data transfer mode, supports SMS AT command set to send information / check work status / query
operations such as setting parameters, send AT commands via SMS to DTU, DTU will be like in the serial execution of
AT commands sent by the user to perform the same command and returns SMS report the results.
DTU After enabling serial AT command / network AT command functions, you can use SMS to send AT
commands similar format to use the serial / network to send AT commands, similar to the effect of the
implementation of the serial port to send commands directly.
SMS AT commands:
SMS AT commands, the format is "PSW, CMD", PSW indicates the password, CMD, said specific instructions,
PSW's factory default setting is "admin", and the CMD command refer to the "USR-GPRS232-DTU-AT command set"
and the other on describes instructions.