CalAmp SMC-GPRS- Series User Manual

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CalAmp SMC-GPRS- Series User Manual Manual pdf 51 page image

001-0004-829 Rev01Page 51 of 73Hardware Related CommandsThe 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 CommandsCommand DescriptionAT+CCLKReal Time Clock:Format is "yy/mm/dd,hh:mm:ss", where the characters indicate the two lastdigits of the year, followed by month, day, hour, minutes, seconds; for example6th of July 2005, 22:10:00 hours equals to "05/07/06,22:10:00" Factory defaultis "02/01/01,00:00:00"Write command:=• is retained if the device enters the Power Down mode via AT^SMSO.• will be reset to its factory default if power is totally disconnected. Inthis case, the clock starts with = "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 toupdate the current time. Therefore, it is recommended to wait 2s before usingthe commands AT+CCLK and AT+CALA (for example 2s after ^SYSSTART hasbeen output).AT+CALASet alarm time:The write command can be used to set an alarm time in the ME or to clear aprogrammed alarm. When the alarm time is reached and the alarm is executedthe ME returns an Unsolicited Result Code (URC) and the alarm time is reset to"00/01/01,00:00:00".AT^SCTMSet critical operating temperature presentation mode or query temperature:Use this command to monitor the temperature range of the module. The writecommand enables or disables the presentation of URCs to report criticaltemperature limits.Write command:=0 Presentation of URCs is disabled (except for 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 limit0 Normal operating temperature1 Above upper temperature alert limit2 Above uppermost temperature limit (causes immediate switch-off)