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22
Power Status Command
22.1 External Power Status – AT$XE
This command allows user to set maximum 5 external power thresholds for monitoring,
which is in term of digital value. When the external power level is equal or higher than
the preset threshold, the respective external power status flag in the event table will be
set.
The ADC reference voltage is 3.3 volts. The external power level is reduced by ten
times before connecting to the ADC channel.
For the conversion from digital value to actual voltage, refer to "ADC Conversion
Formula" below. The factor value for external power level is 29. For example, the
voltage of 12 V is corresponding to digital value of 348.
ADC Conversion Formula
External Power Level = (Digital Value / Factor) volts
Syntax
Command
AT$XE=<Index>,<Mode>[,<Threshold>]
Note: Write setting.
AT$XE=<Index>
Note: Query one setting and current external
power level.
AT$XE?
Note: Query all settings (not accessible via
SMS).
Parameters
Index
External power status 1 to 5
Mode
0 – Disable
1 – Enable
Default is 0 (Disable)
Confidential
OK
$XE: <Index>,<Mode>,<Threshold>,<Current>
OK
$XE: 1, <Mode>,<Threshold>
...
$XE: 5, <Mode>,<Threshold>
DAVISCOMMS (S) PTE LTD
MTD2000 AT Command Guide R12
Response
85 /105
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