At^sbc Battery Charging / Discharging And Charge Control - Siemens TC37 Module At Command Reference

AT Command Set

6.5 AT^SBC Battery charging / discharging and charge control

This chapter is only applicable to TC35 and TC37, it is not intended for the TC35 Terminal.
Responses returned by the AT^SBC command vary with the operating mode of the ME:
Normal mode:
Normal mode + charging:
Charge-only mode:
Alarm mode:
Charging begins once the charger connects to the POWER pins of the ZIF connector (except for the
Alarm mode). Please refer to the [1] ("Hardware Interface Description") supplied with your GSM
engine and the Application Note "Charging the Battery Pack" for details on the charging process.
Test command Response
AT^SBC=? ^SBC: (list of supported <bcs>s),(list of supported <bcl>s),<mpc> module power
consumption
Defined values
<bcs>
<bcl>
<mpc>
TC3X_ATC_01_V04.00
ME is switched on by Ignition pin and running the SLEEP, IDLE,
TALK or DATA mode. Charger is not connected. AT^SBC can be
used to query the battery capacity and the power consumption of
ME and application (if value of application was specified before as
<current>).
Allows charging while ME is switched on by Ignition pin and running
the SLEEP, IDLE, TALK or DATA mode. AT^SBC returns charger
status and power consumption of ME / application. Battery capacity
is not available.
Allows charging while ME is detached from GSM network. When
started, the mode is indicated by the URC "SYSSTART CHARGE-
ONLY MODE". AT^SBC returns charger status and power
consumption of ME / application. Percentage of battery capacity is
not available. In Charge-only mode a limited number of AT
commands is accessible (see Table 9). There are several ways to
activate the Charge-only mode:
a) from Power Down mode: Connect charger while ME was powered
down with AT^SMSO
b) from Normal mode: Connect charger, then enter AT^SMSO.
No charging functionality, i.e. charging does not start even though
the charger connects to the POWER lines. Battery parameters are
not available.
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
Battery capacity
0, 20, 40, 60, 80, 100 percent of remaining capacity (6 steps)
0 indicates that either the battery is exhausted or the capacity value
is not available
Average power consumption:
Value (0...5000) of average power consumption (mean value over a
couple of seconds) in mA. See read and write command for details.
Page 148 of 204 29.05.2002