MC35i AT Command Set

MC35i AT Command Set17.4 AT^SCTM• 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 presentationof "1" or "-1" URCs depends on the settings selected with the write command:If =0: Presentation is enabled during the two minute guard period after the module was switched on. Afterexpiry of the two minute guard period, the presentation will be disabled, i.e. no URCs with alert levels "1" or''-1" will be generated.If = 1: Presentation of "1" or "-1" URCs is always enabled.• Level "2" or "-2" URCs are followed by immediate shutdown, except in cases described in Section 17.4.1,Deferred shutdown. The presentation of these URCs is always enabled, i.e. they will be output even thoughthe factory setting AT^SCTM=0 was never changed.ExamplesEXAMPLE 1URCs issued when the operating temperature is out of range:^SCTM_B: 1Caution: Engine close to overtemperature limit.^SCTM_B: 2Alert: Engine is above overtemperature limit and switches off.^SCTM_B: -1Caution: Engine close to undertemperature limit.^SCTM_B: -2Alert: Engine is below undertemperature limit and switches off.EXAMPLE 2URCs issued when the temperature is back to normal (URC is output once):^SCTM_B: 0Engine back to normal temperature.17.4.1 Deferred shutdownIn the following cases, shutdown will be deferred if a critical temperature limit is exceeded:• while an emergency call is in progress• while a call to predefined number is in progress• during a two minute guard period after powerup. This guard period has been introduced in order to allow forthe user to make an emergency call or to make a call to . The start of any one of thesecalls extends the guard period until the end of the call. Any other network activity may be terminated by shutdownupon expiry of the guard time.While in a "deferred shutdown" situation, the engine continues to measure the temperature and to deliver alertmessages, but deactivates the shutdown functionality. Once the guard period is expired or the call is terminated,full temperature control will be resumed. If the temperature is still out of range, ME switches off immediately (withoutanother alert message).CAUTION! automatic shutdown is a safety feature intended to prevent damage to the module. Extended usageof the deferred shutdown facilities provided may result in damage to the module, and possibly other severe consequences.MC35i_ATC_V02.00nConfidential / ReleasedPage 355 of 3909/10/08