User's Manual

AT Command Set
MC35_ATC_01_V04.00 Page 187 of 238 02.04.2002
Reference
Siemens
Note
Important:
• Please refer to the "Hardware Inferface Description" supplied with your GSM
engine for specifications on critical temperature ranges.
• To avoid damage the module will shut down once the critical temperature is
exceeded. The procedure is equivalent to the power-down initiated with
AT^SMSO.
• URCs indicating the alert level "1" or "-1" are intended to enable the user to
take appropriate precautions, such as protect the module or battery from expo-
sure to extreme conditions, or save or back up data etc. The presentation of "1"
or "-1" URCs depends on the settings selected with the write command:
If <n>=0: Presentation is enabled for 15 s time after the module was switched
on. After 15 s operation, the presentation will be disabled, i.e. no URCs will be
generated.
If <n>= 1: Presentation of "1" or "-1" URCs is always enabled.
• Level "2" or "-2" URCs are followed by immediate shutdown. The presentation
of these URCs is always enabled, i.e. they will be output even though the fac-
tory setting AT^SCTMC=0 was never changed.
Examples
URCs issued when the operating temperature is out of range:
^SCTM_A: 1 Caution: Battery close to overtemperature limit.
^SCTM_A: 2 Alert: Battery above overtemperature limit. Engine switches off.
^SCTM_B: 1 Caution: Engine close to overtemperature limit.
^SCTM_B: 2 Alert: Engine is above overtemperature limit and switches off.
^SCTM_A: -1 Caution: Battery close to undertemperature limit.
^SCTM_A: -2 Alert: Battery below undertemperature limit. Engine switches
off.
^SCTM_B: -1 Caution: Engine close to undertemperature limit.
^SCTM_B: -2 Alert: Engine is below undertemperature limit and switches off.
Example
URCs issued when the temperature is back to normal (URC is output once):
^SCTM_A: 0 Battery temperature back to normal temperature.
^SCTM_B: 0 Engine back to normal temperature