Data Sheet

Smart Machine Smart Decision
Response
+CSCLK: <n>
OK
Read Command
AT+CSCLK?
Parameter
See Write Command
Response
OK
ERROR
Write Command
AT+CSCLK=<n
>
Parameter
<n> 0 Disable slow clock, module will not enter sleep mode.
1 Enable slow clock, it is controlled by DTR. When DTR is high,
module can enter sleep mode. When DTR changes to low
level, module can quit sleep mode.
2 Enable slow clock automatically. When there is no interrupt
(on air and hardware such as GPIO interrupt or data in serial
port), module can enter sleep mode. Otherwise, it will quit
sleep mode.
Parameter Saving AT&W_SAVE
Mode
Max Response -
Time
Reference Note
There are two caveats when you want to quit sleep mode in mode 2:
1, You should input some characters (at least one) to awake module
2, An interval time of 100ms more is necessary between waking characters
and following AT commands,otherwise the waking characters will not be
discarded completely,and messy codes will be produced which may leads to
UART baudrate re-adaptation.
6.2.21 AT+CENG Switch on or off Engineering Mode
AT+CENG Switch on or off Engineering Mode
Response
TA returns the list of supported modes.
+CENG: (list of supported <mode>s),(list of supported <Ncell>s)
OK
Test Command
AT+CENG=?
Parameters
See Write Command
Read Command Response
AT+CENG?
Engineering Mode is designed to allow a field engineer to view and test the
network information received by a handset, when the handset is either in
SIM800 Series_AT Command Manual_V1.05 159 2014-07-31