C55/C55i AT COMMAND SET Description Preliminary - Falcom

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C55/C55I AT COMMAND SET VERSION 1.00 15.4 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. CAUTION: During the first 15 seconds after start-up, the module operates in an automatic report mode: URCs can be always displayed regardless of the selected mode . Syntax Test Command Response(s) AT^SCTM=? ^SCTM: (list of supported s) Read Command AT^SCTM? Write Command AT^SCTM= OK Response(s) OK ERROR +CME ERROR: Response(s) OK ERROR +CME ERROR: Reference(s) PIN ASC0 SIEMENS ○ ● Unsolicited Result Codes URC 1 URCs will be automatically sent to the TA when the temperature reaches or exceeds the critical level, or when it is back to normal. URC 2 for module (board) temperature Command Description The read command returns the URC presentation mode and information about the current temperature range of the module. Select to enable or disable the presentation of the URCs. Please note that the setting will not be stored upon Power Down, i.e. after restart or reset, the default =0 will be restored. To benefit from the URCs =1 needs to be selected every time you reboot the GSM engine. Parameter Description 1 Presentation of URCs is enabled. (num) 0 (&F) Presentation of URCs is disabled (except for equal to -2 or +2). (num) -2 Below lowest temperature limit (causes immediate switch-off) -1 Below low temperature alert limit This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission. Page 278
C55/C55I AT COMMAND SET VERSION 1.00 0 Normal operating temperature 1 Above upper temperature alert limit 2 Above uppermost temperature limit (causes immediate switch-off) Notes • Please refer to the "Hardware Interface Description" 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 powerdown 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 from exposure 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 =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 = 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 factory setting AT^SCTM=0 was never changed. • If the temperature limit is exceeded while an emergency call is in progress the engine continues to measure the temperature and to deliver alert messages, but deactivates the shutdown functionality. Once the call is terminated full temperature control will be resumed. If the temperature is still out of range ME switches off immediately. Examples: EXAMPLE 1 URCs issued when the operating temperature is out of range: SCTM_B: 1 Caution: Engine close to overtemperature limit. SCTM_B: 2 Alert: Engine is above overtemperature limit and switches off. SCTM_B: -1 Caution: Engine close to undertemperature limit. SCTM_B: -2 Alert: Engine is below undertemperature limit and switches off. EXAMPLE 2 URCs issued when the temperature is back to normal (URC is output once): ^sctm_B: 0 Engine back to normal temperature This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission. Page 279
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C55/C55i AT COMMAND SET Description Preliminary - Falcom

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