Specifications

TC35i AT Command Set
Confidential / Released
TC35i_ATC_V01.05 Page 199 of 278 04.08.2003
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URCs will be automatically sent to the TA when the temperature reaches or ex-
ceeds the critical level, or when it is back to normal.
^SCTM_A: <m> Temperature range of the connected battery.
^SCTM_B: <m> Temperature range of the TC35i board.
See Test command for defined values of <m>.
Reference
Siemens
Note
Important:
· Please refer to [1] for specifications on critical temperature ranges.
· The module will shut down once the critical temperature is exceeded. The pro-
cedure 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^SCTM=0 was never changed.
· If the temperature limit is exceeded while an emergency call is in progress the
module continues to measure the temperature and to deliver alert messages,
but deactivates the shutdown functionality. Once the call is terminated full tem-
perature control will be resumed. If the temperature is still out of range TC35i
switches off immediately.
Examples
URCs issued when the board 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: Board close to overtemperature limit.
^SCTM_B: 2 Alert: Board 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: Board close to undertemperature limit.
^SCTM_B: -2 Alert: Board is below undertemperature limit and switches off.
Example
URC issued when board temperature is back to normal:
^SCTM_A: 0 Battery temperature is back to normal.
^SCTM_B: 0 Board temperature is back to normal.