Siemens AT Command Set Cellular Engines Wireless Modules MC35 用户手册

MC35_ATC_01_V04.00

Page 65 of 238

02.04.2002

Test command

AT+CCLK=?

Response

Read command

AT+CCLK?

Response

Parameter:

<time>:  string type value; format is "yy/MM/dd,hh:mm:ss", where characters

indicate year (two last digits), month, day, hour, minutes, seconds;
e.g. 6

th

 of May 2001, 22:10:00 hours equals to “01/05/06,22:10:00"

Write command

AT+CCLK=<time>

Response

Parameter:

see read command

Reference

GSM 07.07

Note

•  <time> is retained if the device enters the Power Down mode via

AT^SMSO (pg. 192).

•  <time> is lost if power is totally disconnected and if no separate battery

back-up for the clock is provided via the ZIF cable. In this case, the clock
starts with <time> = “00/01/01,00:00:00” upon next power-up.

•  See AT+CALA, pg. 56.

•  When the GSM engine wakes up to Alarm mode, the system takes 1s to

re-initialize the RTC and to update the current time. Therefore, it is rec-
ommended to wait 1s before using the AT+CCLK command (for example
1s after ^SSYSTART has been output).