Siemens MC35 User Manual

Page 56

AT Command Set

MC35_ATC_01_V03.02

Page 56 of 228

13.03.2002

Parameter

string type value; format is "yy/MM/dd,hh:mm:ss", where characters
indicate year (two last digits), month, day, hour, minutes. E.g. 6

May 2001, 22:10:00 hours equals to “01/05/06,22:10:00" (see also
+CCLK). Note: if equals current date and time or is to an ear-
lier date, TA returns +CME ERROR: <21>.

integer type value indicating the array index of the alarm. Index starts
with 0. If only this value is returned by the test command, it is default
and indicates that only one alarm time is possible; however, if a sec-
ond alarm time is set, the previous alarm is deleted.

integer type value indicating the type of the alarm
0 Alarm indication: text message via serial interface

string type value indicating the text to be displayed when alarm time
is reached; maximum length is . After first connection to
power supply is undefined.

Note:

will be stored to the non-volatile flash memory when the

device enters the Power Down mode via AT^SMSO (pg. 184). Once
saved, it will be available upon next power-up, until you overwrite it by
typing another text. This eliminates the need to enter the full string
when setting a fresh alarm and thus, saves memory due to the limited
number of flash memory write cycles (e.g. 100.000).

integer type value indicating the maximum length of . The

maximum length is 16.

Unsolicited result code

Indicates reminder call:
+CALA:

Indicates ME wake-up into Alarm mode:
^SSYSTART ALARM MODE
+CALA:
If autobauding is active (AT+IPR=0) the URCs ^SSYSTART ALARM MODE
and +CALA: do not appear. Therefore, avoid using Alarm mode in con-
junction with autobauding.

Reference

GSM 07.07

Note

• should not contain characters which are coded differently in ASCII

and GSM (e.g. Д, Ц, Ь), see also Chapter 9.5.

• In the event of power outage the GSM engine retains the current alarm set-

ting, but the RTC will be reset to = “00/01/01,00:00:00” and must be
restored after resume of power (see also AT+CCLK, pg. 64. It is only in
Power Down mode, that the RTC is kept powered from a dedicated voltage
regulator, thus saving the current date and time.

• 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 recom-
mended to wait 1s before using the AT+CCLK command (for example 1s
after ^SSYSTART has been output).

• Please consider when using multiplex mode (+CMUX, pg. 85):

It is possible to use +CALA with every logical channel (1 – 3).

The total no. of possible alarm events is shared by all channels. If =
0 is returned by the test command, this indicates that only one common
alarm time is possible for all logical channels.