Digi XBee SX 868 - Command Mode

Modes Transmit mode
XBee® SX 868 RF Module User Guide
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Transmit mode
When the device receives serial data and is ready to packetize it, the device attempts to transmit the
serial data. The destination address determines which node(s) will receive and send the data.
In the following diagram, route discovery applies only to DigiMesh transmissions. Once route
discovery establishes a route, the device transmits the data. If route discovery fails to establish a
route, the device discards the packet.
For more information, see Data transmission and routing.
Receive mode
This is the default mode for the XBee SX 868 RF Module. The device is in Receive mode when it is not
transmitting data. If a destination node receives a valid RF packet, the destination node transfers the
data to its serial transmit buffer.
Command mode
Command mode is a state in which the firmware interprets incoming characters as commands. It
allows you to modify the device’s configuration using parameters you can set using AT
commands.When you want to read or set any parameter of the XBee SX 868 RF Module using this
mode, you have to send an AT command.Every AT command starts with the lettersATfollowed by
the two characters that identify the command and then by some optional configuration values.
The operating modes of the XBee SX 868 RF Module are controlled by the AP (API Mode) setting,
butCommand mode is always available as a mode thedevice can enter while configured for any of
the operating modes.
Command mode is available on the UART interface for all operating modes. You cannot use the SPI
interface to enter Command mode.
Enter Command mode
To get a device to switch into Command mode, you must issue the following sequence:+++within
one second. There must be at least one second preceding and following the+++sequence. Both the