MTD2000 AT Command Guide R12
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21.5 Battery Charging – AT$BC
This command allows user to turn off battery charging when the external power falls
below a preset threshold.
Note:
1. With battery charging disabled, when the external power falls below a preset
threshold, the device will send out an unsolicited response to indicate stop battery
charging.
2. With battery charging disabled, when the external power goes above the preset
threshold, the device will send out an unsolicited response to indicate resume
battery charging.
Syntax
Command
Response
AT$BC=<Mode>[,<Threshold>]
Note: Write setting.
OK
AT$BC?
Note: Query setting.
OK
AT$BC: <Mode>,<Threshold>
Parameters
Mode
0 – Turn off battery charging when external power drops below a
preset threshold
1 – Always turn on battery charging
Default is 1
Threshold
External power threshold (9 to 12 V) for 12 V power source, default
is 10 V.
For 24 V power source, the threshold range (9 to 12 V) are
corresponding to (18 to 24 V) and the default is 20 V.
Example
Command
Response
AT$BC=0,9
Note: Disable battery charging when the
external power drops below 9 V.
OK
AT$BC?
OK