AC75 AT Command Set
19.4 AT^SBC s
AC75_ATC_V01.002 Page 488 of 569 10/30/06
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Notes
• If multiplex mode (AT+CMUX) is active, any virtual channel can be used for entering the read or write com-
mand. The undervoltage URC will be issued simultaneously on all three channels.
• Another URC type requir ed for battery powered applications is the URC "^SYSSTART CHARGE ONLY MODE".
It is indicated automatically when the module enters this mode (except when autobauding is active). See
AT+CFUN for details.
19.4.1 Responses returned by read command
Responses returned by the AT^SBC read command vary with the operating mode of the AC75:
• Normal mode: AC75 is switched on by Ignition pin and running in SLEEP, IDLE, TALK or DATA mode.
Charger is not connected. The AT^SBC read command indicates the battery capacity and the current con-
sumption of the application (if value of application was specified before as <current>).
• Normal mode + charging: Allows charging while AC75 is switched on by Ignition pin and running in SLEEP,
IDLE, TALK or DATA mode. The AT^SBC read command returns only charger status and current consump-
tion of the application. Percentage of battery capacity is not available.
• CHARGE ONLY mode: Allows cha rging while AC75 is detached from GSM network. When started, the mode
is indicated by the URC "^SYSSTART CHARGE ONLY MODE". The AT^SBC read command returns only the
charger status and current consumption of the application. Percentage of battery capacity is not available. In
CHARGE ONLY mode a limited number of AT commands is accessible (see Appendix). There are several
ways to activate the CHARGE ONLY mode:
- from POWER DOWN mode: Connect charger while the AC75 was powered down with AT^SMSO
- from Normal mode: Connect charger, then enter AT^SMSO.