MC75 AT Command Set

MC75 AT Command Set
18.3 AT^SBC
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Notes
• If multiplex mode (AT+CMUX) is active, any virtual channel can be used for entering the read or write command.
The undervoltage URC will be issued simultaneously on all three channels.
• The URC "^SYSSTART CHARGE ONLY MODE" is indicated automatically when the module enters this mode
(except when autobauding is active). Unlike the undervoltage URC, it cannot be disabled or enabled by the
TE.
18.3.1 Responses returned by read command
Responses returned by the AT^SBC read command vary with the operating mode of the MC75:
• Normal mode: MC75 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 consumption
of the application (if value of application was specified before as ).
• Normal mode + charging: Allows charging while MC75 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 consumption
of the application. Percentage of battery capacity is not available.
• CHARGE ONLY mode: Allows charging while MC75 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 MC75 was powered down with AT^SMSO
- from Normal mode: Connect charger, then enter AT^SMSO.
MC75_ATC_V01.001 Page 423 of 475 6/2/05
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