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18.3
AT^SBC Battery Charge Control
The functions of the
AT^SBC
•
General functions:
The
write command enables the presentation of URCs alerting the user of undervoltage conditions
AT^SBC
before the module switches off. The automatic shutdown caused by undervoltage is equivalent to the power-
down initiated with the
state avoiding loss of data. When the module is in IDLE mode it takes typically one minute to deregister from
the network and to switch off. For further details regarding automatic shutdown and voltage ratings please
refer to the Hardware Interface Description [2].
The
read command displays the average current consumption of the module and, if specified, of the
AT^SBC
external application.
•
Functions available with battery connected:
The
read command can be used to query the status of the battery and the charger.
AT^SBC
The
write command is important for entering the current consumption of the external application via
AT^SBC
<current>. It should be noted that the charge control supported by MC55 works only if the requirements
described in the Hardware Interface Description
presence of an NTC and protection circuit etc.) and if
not incorporate an NTC, or the battery and the NTC are not compliant with the specified requirements the
battery cannot be detected by MC55.
Syntax
Test Command
AT^SBC=?
Response(s)
^SBC:(list of supported <bcs>s), (list of supported <bcl>s), (list of supported <mpc>s)
OK
Read Command
AT^SBC?
Response(s)
^SBC: <bcs>, <bcl>,
OK
ERROR
+CME ERROR:
<err>
Write Command
AT^SBC=<current>
Response(s)
OK
ERROR
+CME ERROR:
<err>
Reference(s)
SIEMENS
Unsolicited Result Code
MC55_ATC_V04.00
Confidential / Released
differ depending on whether or not a battery is present.
command, i.e. ME logs off from the network and the software enters a secure
AT^SMSO
<mpc>
Page 430 of 475
[2]
are met (battery type Lithium-Ion or Lithium Polymer,
is correctly specified. If the battery does
<current>
PIN
ASC0 ASC1
MUX1
!
%
%
%
MUX2
MUX3 Charge
%
%
§
%
Last
!
3/17/06
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