Siemens MC55 - page 427

MC55 AT Command Set

17.1 AT+CALA s

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MC55_ATC_V01.05 Page 427 of 469 2/10/04

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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 alar m time is reached; maximum length is <tlength>.

By factory default, <text> is undefined.

Note: <text> will be stored to the non-volatile flash memory when the device enters the Power Down mode via

AT^SMSO. 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.

<text> should not contain characters which are coded differently in ASCII and GSM (e.g. umlauts), see also

"Supported character sets" and "GSM alphabet tables".

Integer type value indicating the maximum length of <text>. The maximum l ength is 16.

Notes

• After the alarm was executed the parameter <time> of AT+CALA will be reset to "00/01/01,00:00:00", but

<text> will be preserved as described above.

• If MC55 is totally disconnected from power supply the most recently saved configu ration of +CALA:

<time>[,<n>[,<type>[,<text>]]] will be presented when MC55 is powered up.

• Each time MC55 is restarted it takes 2s to re-initialize the RTC and to update the current time. Therefore, it

is recommended to wait 2s before using the commands AT+CCLK and AT+CALA (for example 2s after

^SYSSTART has been output).

• Alarm settings on ASC0 / ASC1 and different Multiplexer channels (see AT+CMUX):

- On each interface an individual <text> message can be stored, but only one time setting applies. This

means an alarm <time> set on one of the interfaces overwrites the time setting on all remaining inter-

faces. Therefore, the total number of alarm events returned by the read command AT+CALA? will always

be <n>=0, no matter whether different text messages are stored.

- When the alarm is timed out and executed, the ME sends the URC only on the interface where the mos t

recent alarm setting was made. The alarm time will be reset to "00/01/01,00:00: 00" on all interfaces.

Examples

EXAMPLE 1

You may want to configure a reminder call for May 31, 2004, at 9.30h, including the message "Goo d Morning".

Do not switch off the GSM engine. When the alarm is executed the ME returns the followin g URC:

<type>(num)

<text>(str)

<tlength>(num)

AT+CALA="04/05/31,09:30:00",0,0,"Good Mornin g"

+CALA: Good Morning