Insys GSM Small 11-02-01-03-02.001 사용자 설명서

6. Function Description 

33 

The following paragraphs show an overview of the extended functions of the INSYS GSM 
small in view of the different energy saving modes. For in-depth information and the AT 
commands used for it we refer to the AT command set for the Siemens TC35i. 
 
In addition, the INSYS GSM small has an integrated real time clock (RTC, no power 
reserve), which can also be used in connection with the sleep and power down modes. 

Time/date 
The internal real time clock of the INSYS GSM small can be set using the following 
command: 
AT+CCLK=<time> 

  

is the time in the format “yy/mm/dd,hh:mm:ss“. 

 
Example: 

06. May 2005, 15.30 and 25 seconds. 
AT+CCLK=“04/05/06,15:30:25“ 

When switching off the supply voltage, the time is set to „02/01/01,00:00:00“ 
(default). 
After a restart (reset or power up) the RTS needs 2 seconds for initialization. We 
recommend to wait 2 seconds until the message ^SYSTART  is shown before entering 
the commands AT+CCLK and AT+CALA 2. 
The clock keeps running while the INSYS GSM small is in power down mode, 
but there is not power reserve for an interruption of the operating voltage. 

Alarm time 
An alarm time can be defined for the internal RTC:  
AT+CALA=<time>[,<n>[,<type>[,<text>]]] 

 
<time>

  

is the time in the format “yy/mm/dd,hh:mm:ss“. 

    

is reserved for future functionality, must be 0. 

  

is reserved for future functionality, must be 0. 

  

is an additional text which should be displayed during the alarm time via 
the serial interface; maximum length = 16 characters. 

 
 
Example: 

Reminder on May 31, 2004, 9:30 am with the message: “Good morning” 
AT+CALA=“04/05/31,09:30:00“,0,0,“Good Morning“ 

 

Version  1.00 / 09.04