Transparent Operating Mode; Serial-To-Rf Packetization; Api Operating Mode; Command Mode - Digi XBee 3 ZigBee User Manual

Modes

Transparent operating mode

When operating in Transparent mode, the devices act as a serial line replacement. The device queues
up all UART data received through the DIN pin for RF transmission. When RF data is received, the
device sends the data out through the serial port. Use the Command mode interface to configure the
device configuration parameters.

Serial-to-RF packetization

The device buffers data in the serial receive buffer and packetizes and transmits the data when it
receives the following:
No serial characters for the amount of time determined by the RO (Packetization Timeout)
n
parameter. If RO = 0, packetization begins when the device received a character.
Command mode Sequence (GT + CC + GT). Any character buffered in the serial receive buffer
n
before the device transmits the sequence.
Maximum number of characters that fit in an RF packet.
n

API operating mode

API operating mode is an alternative to Transparent operating mode. The frame-based API extends
the level to which a host application can interact with the networking capabilities of the device. When
in API mode, the device contains all data entering and leaving in frames that define operations or
events within the device.
The API provides alternative means of configuring devices and routing data at the host application
layer. A host application can send data frames to the device that contain address and payload
information instead of using Command mode to modify addresses. The device sends data frames to
the application containing status packets, as well as source and payload information from received
data packets.
The API operation option facilitates many operations such as:
Transmitting data to multiple destinations without entering Command mode
n
Receive success/failure status of each transmitted RF packet
n
Identify the source address of each received packet
n

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 3 Zigbee 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 3 Zigbee RF Module are controlled by the
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.
Digi XBee® 3 Zigbee® RF Module
Transparent operating mode
AP (API Enable) setting,
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