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2. AT command
+MRST
The AT+MRST command initiates a G510 power off operation, which powers off directly.
+CFUN
The AT+CFUN=0 command initiates a G510 power off operation, which De-Registration first, and then
powers off .
3.5 Sleep Mode
The module incorporates an optional low power mode, called Sleep Mode, in which it operates in
minimum functionality, and therefore draws significantly less current.
During Sleep Mode the module network connection is not lost. The module will be waked up cycled
and monitored the GSM network constantly for any incoming calls or data. During Sleep mode, all of the
G510 interface signals are inactive and are kept in their previous state, prior to activating low power
mode.
To save power, all the G510 internal clocks and circuits are shut down, and therefore serial
communications is limited.
G510 will not enter Sleep mode in any case when there is data present on the serial interface or incoming
from the GSM network or an internal system task is running. Only when processing of any external or
internal system task has completed, G510 will enter Sleep mode according to the ATS24 command
settings.
3.5.1 Activating Sleep Mode
By default, the module is in standby mode and the default value of ATS24 is 0. In this mode, the
interfaces and the functions are active. Through sending the AT command "ATS24"to activate the sleep
mode.
The length of sleep time and awaking time are up to the parameters "</value>" of the command
"ats24 = [<value>]" . For example, the module will get into sleep mode after 2s while sending this AT
command "ats24=2". And the settings will not be saved if the module power off.
G510 Hardware User Manual
Figure 3- 4 Power off succeed
Page 18 of 42
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