CalAmp SMC-GPRS Series, User Manual

Page: 51 / 84

001-0004-829 Rev00
Page 51 of 84
Hardware Related Commands
The AT Commands described in this section are related to the modems's hardware interface.
A brief description of hardware related commands are provided in Table 6.14. For futher information,
refer to the Cinterion TC63i AT Command Set document available from Cinterion
[2] .
Table 10.14: Hardware Related Commands
Command Description
AT+CCLK
Real Time Clock:
Format is "yy/mm/dd,hh:mm:ss", where the characters indicate the two last
digits of the year, followed by month, day, hour, minutes, seconds; for example
6th of July 2005, 22:10:00 hours equals to "05/07/06,22:10:00" Factory default
is "02/01/01,00:00:00"
Write command:
=<time>
• <time> is retained if the device enters the Power Down mode via AT^SMSO.
• <time> will be reset to its factory default if power is totally disconnected. In
this case, the clock starts with <time>= "02/01/01,00:00:00" upon next power-
up.
• Each time SMC modem 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).
AT+CALA
Set alarm time:
The write command can be used to set an alarm time in the ME or to clear a
programmed alarm. When the alarm time is reached and the alarm is executed
the ME returns an Unsolicited Result Code (URC) and the alarm time is reset to
"00/01/01,00:00:00".
AT^SCTM
Set critical operating temperature presentation mode or query temperature:
Use this command to monitor the temperature range of the module. The write
command enables or disables the presentation of URCs to report critical
temperature limits.
Write command:
=0 Presentation of URCs is disabled (except for <m> equal to -2 or +2).
=1 Presentation of URCs is enabled.
Read command:
-2 Below lowest temperature limit (causes immediate switch-off)
-1 Below low temperature alert limit
0 Normal operating temperature
1 Above upper temperature alert limit
2 Above uppermost temperature limit (causes immediate switch-off)