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3. CONTROL AND STATUS
113
LZT 123 7263 R1C
3.18 AT+CCLK Set Clock and Date
Sets the real time clock of the ME. If setting fails in an ME, error +CME
ERROR: <err> is returned. Read command returns the current setting
of the clock.
Example
AT+CCLK?
+CCLK: “00/01/01,22:54:48+00”
OK
AT+CCLK=“19/11/02,09:30:00+00”
OK
Description Command Possible Responses
Set the real time clock
of the ME
AT+CCLK=<time> • +CME ERROR: <err>
•OK
•ERROR
Show the current
setting
AT+CCLK? • +CCLK: <time>
• +CME ERROR: <err>
•OK
•ERROR
Show if the command
is supported
AT+CCLK=? •OK
•ERROR
<time> Description
string type
value
Format is “yy/mm/dd,hh:mm:ss±zz”, where characters
indicate year (two last digits), month, day, hour, minutes,
seconds and time zone (indicates the difference,
expressed in quarters of an hour, between the local time
and GMT; range -47...+48), e.g. 6th of May 1994, 22:10:00
GMT+2 hours reads “94/05/06,22:10:00+08”
NOTE: If the ME does not support time zone information
then the three last characters of <time> are not returned
by +CCLK?