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Cyclic Sleep: wakes when it detects RF activity
l
For more information, see
Transmit mode
When the device receives serial data and is ready to packetize it, the device exits Idle mode and attempts
to transmit the serial data.
Enter Command mode
There are two ways to enter Command mode:
1. To get a device to switch into this mode, you must issue a unique string of text in a special
way: +++ (default). When the device sees a full second of silence in the data stream
followed by the string +++ (without Enter or Return) and another full second of silence, it
knows to stop sending data through and start accepting commands locally.
Do not press Return or Enter after typing +++ because it will interrupt the guard time
silence and prevent you from entering Command mode.
2. Assert (low) the CONFIG pin. Turn the power going to the device off and back on.
The device sends the letters OK followed by a carriage return out of the UART to indicate that it entered
Command mode.
You can customize the guard times and timeout in the device's configuration settings. See
Sequence Character) on page 40, BT (Guard Time Before) on page 39
39.
Send AT commands
Once the device enters Command mode, use the syntax in the following figure to send AT commands.
To read a parameter value stored in the device's register, omit the parameter field.
The preceding example would enable software flow control.
To store the new value to non-volatile (long term) memory, send the WR (Write) command. This allows
parameter values that you modify to persist in the device's registry after a reset. Otherwise, the device
restores parameters to the previous values after a reset.
XBee/XBee-PRO XTend Compatible (XTC) RF Module User Guide
Sleep modes on page
23.
Additional modes
CC (Command
and
AT (Guard Time After) on page
21
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