Design recommendations
Clean shutdown
Digi XBee3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide
115
The custom configuration is stored in non-volatile memory. You can continue to create and save
custom configurations until the XBee3 memory runs out of space. If there is no space left to save a
configuration, XBee returns an error.
You can use the
!C
command to clear or overwrite a custom configuration at any time.
Set a custom configuration
1. Open XCTU on the device.
2.
3. Perform the following process for each configuration that you want to set as a factory default.
a. Issue an
AT%F
command. This command enables you to enter a custom
configuration.
b. Issue the custom configuration command. For example:
ATBT 1
. This command sets
the default for Bluetooth to enabled.
Clear all custom configurations on a device
After you have set configurations using the AT%F command, you can return all configurations to the
original factory defaults.
1. Open XCTU on the device.
2.
3. Issue
AT!C
.
Clean shutdown
WARNING!
Improper shutdown of the modem may result in the underlying cellular module
becoming irrecoverably unresponsive.
Digi strongly recommends performing a clean shutdown procedure on your XBee cellular devices
before removing power from the devices. Performing a shutdown allows the module to unregister
from the cellular network and safely store operating parameters. Failure to shutdown properly has
the potential to result in delays resuming network operation and in some rare instances may result in
an unrecoverable module failure.
You can use any of the following methods to perform a clean shutdown.
SD (Shutdown) command
You should use the
to safely shut down a device before removing power. This is the
recommended method.
Issue the
SD
command. When the shut down process is complete, the device returns
OK
. After the
device responds
OK
, you can safely remove power from the device.
If the radio can't be fully shut down within two minutes, the device returns
ERROR
.
You can verify the state of the device using the
. After you issue the
SD
command and a
response has been returned (either
OK
or
ERROR
), issue the
AI
command. If the shutdown was
successful,
2D
is returned.
