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3
Command Configuration and Function Explanation
3.1 AT mode and data transparent transmission mode switch
AT command
ATD*98/r/n
(1) Power-on defaults to work in AT command mode. In AT command mode, send ATD*98\r\n or ATD*99\r\n to switch
(2) <+++>:Transparent transmission mode: In transparent transmission mode, the last three bytes of user data are "+++", or three bytes
"+++" are sent after user data transmission is completed, the transparent transmission mode will end.
3.2 Device software restart
AT command
AT+NRB/r/n
After inputting the AT command, the device will restart, and the AT parameters will be saved in the flash at the same time. When
the AT parameters need to be memorized after power-off, first configure the parameters through the AT command, and then input
the AT+NRB command to save the parameters to the flash.
3.3 Application ofpower saving lock WORKLOCK
AT Command
AT+WORKLOCK
=<enable>/r/n
(1) If module is in deep sleep mode for a long time (chip power down state), in order to ensure that the data interaction fails to enter deep sleep
ahead of time during the application period, input AT+WORKLOCK =1 and add work lock to prevent it from entering deep sleep in
advance. After data interaction is completed, input AT+WORKLOCK=0 to release the lock, then module will enter deep sleep.
(2) The module supports serial port wake-up, which can be waked up by inputting AT command. After the AT command wakes up the
module, the work lock will be automatically added. Therefore, after each wake-up for business interaction, you must enter
AT+WORKLOCK=0 to release the lock to enter deep sleep.
Note: You must also enter AT+WORKLOCK=0 to enter deep sleep after powering on again
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+++
Response
CONNECTI
NG
OK
OK
Response
REBOOTI
NG
Response
OK
7
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