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WN (Warning Data) command
<Diagnostics> WN command is used to report the following data for all active and sticky warnings:
•
Warning number and description
•
Number of occurrences since the last WN or WS command
•
Whether the warning is currently active
Warnings, which are not currently active and have not been active since the last issuance of the WN or WS commands,
are not displayed. The WN command also resets all non-zero warning counts; except for warnings that are presently
active, which are set to 1.
AT Command: ATWN
Parameter Range: returns string
Sample output:
Warning 4: Over-temperature 5 occurrences; presently inactive.
Warning #
Description
1
Under-voltage. This is caused if the supply voltage falls below the minimum threshold for the lowest power level
(2.8 V). If/when the voltage rises above the threshold, the warning is deactivated. The module will not transmit
below this voltage threshold.
2
Over-voltage. This is caused if the supply voltage exceeds 5.75 V. Transmission is not allowed while this warning is
active.
3
Under-temperature. This is caused if the temperature sensed by the module is less than -40 C. The module does
not artificially limit operation while this warning is active, but module functionality is not guaranteed.
4
Over-temperature. This is caused if the temperature sensed by the module is greater than 105 C. The module does
not allow transmission nor reception while this warning is active. The warning is deactivated when the
temperature falls to 100 C.
5
Power reduced. This is caused if the transmit power has to be reduced from the level programmed by PL Command
due to insufficient supply voltage. The 1 W power level requires 4.75 V or higher; 500 mW requires 3.0 V or higher;
100 mW, 10 mW and 1 mW require 2.8 V or higher.
6
Default calibration data in flash. This is caused if the module-specific power calibration data is either not present
or is invalid, or if none of the parameters have been modified from their default values. Power levels may be
incorrect.
7
Default configuration parameters in flash. This is caused if user-modifiable parameters (i.e. those stored by a 'WR'
command) in flash are all the compiled-in default values. This is caused if the user configuration is found to be not
present or invalid at power-up and there is no custom configuration, or if no user-modifiable parameters have
been modified from the compiled-in defaults. Modification of one or more parameters without the subsequent WR
to commit the changes to flash will not deactivate this warning, since it reflects the status of the parameters in
flash. Note that this warning does not reflect usage of the custom configuration defaults, only usage of the
compiled-in defaults.
8
Default factory configuration parameters in flash. This is caused if the factory parameters in flash are all the default
values. This is caused if the factory configuration is found to be not present or invalid at power-up, or if no factory
parameters have been modified.
XTend RF Module User Guide
Command descriptions
56
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