Siemens MC55 Manuel d'utilisateur télécharger pdf (Page 431)

MC55 AT Command Set

17.3 AT^SBC

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MC55_ATC_V01.05 Page 431 of 469 2/10/04

Confidential / Released

Unsolicited Result Code

^SBC: Undervoltage

The message will be reported, for example, when you attempt to set up a call while the voltage is close to the

critical limit and further power loss is caused during the transmit burst. To remind you that the battery needs to

be charged soon, the URC appears several times before the module switches off.

When the module is in IDLE mode it takes typically one minute to deregister from the network and to switch off.

Undervoltage protection depending on the presence of an NTC:

The undervoltage protection is also efficient in applications which are not battery operated, i.e. in applications

where no NTC is connected to the BATT_TEMP pin. To use this feature it is sufficient to issue the write command

which automatically enables the presentation of URCs. You do not need to specify

<current>. Please note,

that in contrast to applications with an NTC, the ME will present the undervoltage URC only once and will then

switch off without sending any further messages.

Command Description

Use the write command to specify the power consumption of your external application. This information enables

the ME to calculate the average power consumption

<mpc> and to properly control the charging process. If the

value is not correct the entire charging process may be affected. Resulting problems may be wrong responses

to the

AT^SBC read command, overcharging, or the battery does not reach full capacity.

The write command registers the serial port as the output channel for unsolicited result codes related to charging.

When the ME is powered down or reset, the value of

<current> is restored to its default. This affects the charg-

ing control and disables the presentation of unsolicited result codes. Therefore, the parameter should be set

every time when needed after rebooting the ME.

Parameter Description

Connection status of battery pack

0 No charging adapter is connected

1 Charging adapter is connected

2 Charging adapter is connected, charging in progress

3 Charging adapter is connected, charging has finished

4 Charging error, charging is interrupted

5 False charging temperature, charging is interrupted while temperature is

beyond allowed range

PIN ASC0 ASC1 MUX1 MUX2 MUX3

! % % % % %

Reference(s)

SIEMENS

<bcs>

(num)

1 2 ... 426 427 428 429 430 431 432 433 434 435 436 ... 468 469

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Siemens MC55 Manuel d'utilisateur Page 431

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