© 2014 Digi International Inc. 17
XBee/XBee-PRO
®
DigiMesh 2.4 User Manual
XBee/XBee-PRO Module Operation
The XBee module provides a serial interface to an RF link. The XBee module converts serial data
to RF data that is sent to any device in an RF network. In addition to RF data communication
devices, the XBee module provides a software interface for interacting with a variety of
peripheral functions, including I/O sampling, commissioning and management devices. The
following diagram illustrates the functionality of the XBee module.
Functionality of the XBee/XBee-PRO
DigiMesh 2.4 RF Module
Serial Communications for the XBee RF Module
The XBee-PRO
RF Modules interface to a host device through a logic-level asynchronous serial
port. Through its serial port, the module can communicate with any logic and voltage compatible
UART, or through a level translator to any serial device (for example, through a Digi proprietary
RS-232 or USB interface board).
XBee UART Data Flow
Devices that have a universal asynchronous receiver/transmitter (UART) interface can connect
directly to the pins of the RF modules as shown in the figure below.
System data flow diagram in a UART-interfaced environment (low-asserted signals distinguished with
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