Siemens AC75 ユーザーズマニュアル

s

AC75_ATC_V01.002

Page 488 of 569

10/30/06

Confidential / Released

• If multiplex mode (

) 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 required for battery powered applications is the URC "

".

It is indicated automatically when the module enters this mode (except when autobauding is active). See

 for details. 

Responses returned by the 

 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 

 read command indicates the battery capacity and the current con-

sumption of the application (if value of application was specified before as 

• Normal mode + charging: Allows charging while AC75 is switched on by Ignition pin and running in SLEEP,

IDLE, TALK or DATA mode. The 

 read command returns only charger status and current consump-

tion of the application. Percentage of battery capacity is not available.

• CHARGE ONLY mode: Allows charging while AC75 is detached from GSM network. When started, the mode

is indicated by the URC "

". The 

 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 

- from Normal mode: Connect charger, then enter 

.