MaxStream XBEE XBee OEM RF Module User Manual Revised Used Manual

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Date Submitted	2011-06-06 00:00:00
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Document Title	product-manual_XB_802.15.4_OEM_RF-Modules_v1.xAx.book
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Document Author:	reckery

XBee®/XBee-PRO® RF Modules
XBee®/XBee-PRO® RF Modules
RF Module Operation
RF Module Configuration
Appendices
Product Manual v1.xEx - 802.15.4 Protocol
For RF Module Part Numbers: XB24-A...-001, XBP24-A...-001
IEEE® 802.15.4 RF Modules by Digi International
Digi International Inc.
11001 Bren Road East
Minnetonka, MN 55343
877 912-3444 or 952 912-3444
http://www.digi.com
90000982_D
6/1/2011
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [6/1/2011]
© 2011 Digi International, Inc. All rights reserved
The contents of this manual may not be transmitted or reproduced in any form or
by any means without the written permission of Digi, Inc.
XBee® and XBee‐PRO® are registered trademarks of Digi, Inc.
Technical Support:
Phone:
(866) 765-9885 toll-free U.S.A. & Canada
(801) 765-9885 Worldwide
8:00 am - 5:00 pm [U.S. Mountain Time]
Live Chat:
www.digi.com
Online Support:
http://www.digi.com/support/eservice/login.jsp
Email:
rf-experts@digi.com
© 2011 Digi International, Inc.
ii
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Contents
1. XBee®/XBee-PRO® RF Modules
Key Features
Specifications
Command Reference Tables
Command Descriptions
Mechanical Drawings
API Operation
Mounting Considerations
API Types
Power Supply Design
FCC Notices
Antenna Performance
10
UART Data Flow
12
12
1-Year Warranty
71
71
15
15
16
DIO Pin Change Detect
16
Sample Rate (Interval)
16
I/O Line Passing
17
Configuration Example
17
XBee®/XBee-PRO® Networks
Peer-to-Peer
18
18
NonBeacon (w/ Coordinator)
18
19
XBee®/XBee-PRO® Addressing
Unicast Mode
22
22
Broadcast Mode
22
Modes of Operation
23
23
Transmit/Receive Modes
Sleep Mode
70
16
Sleep Support
Idle Mode
70
70
5. Additional Information
14
67
70
Labeling Requirements
13
ADC and Digital I/O Line Support
Association
Canada (IC)
Japan
13
I/O Data Format
66
69
Labeling Requirements
12
Transparent Operation
66
66
Approved Antennas
2. RF Module Operation
Serial Communications
66
FCC-Approved Antennas (2.4 GHz)
Electrical Characteristics
API Support
59
OEM Labeling Requirements
Flow Control
38
60
United States (FCC)
Recommended Pin Connections
API Operation
29
29
4. Agency Certifications
Board Layout
29
59
API Frame Specifications
Design Notes
Applying Changes on Remote
Remote Command Responses
Worldwide Acceptance
Pin Signals
23
25
Command Mode
27
3. RF Module Configuration
28
Programming the RF Module
Programming Examples
28
28
Remote Configuration Commands
Sending a Remote Command
29
29
© 2011 Digi International, Inc.
iii
1. XBee®/XBee‐PRO® RF Modules
The XBee and XBee-PRO RF Modules were engineered to
meet IEEE 802.15.4 standards and support the unique
needs of low-cost, low-power wireless sensor networks.
The modules require minimal power and provide reliable
delivery of data between devices.
The modules operate within the ISM 2.4 GHz frequency
band and are pin-for-pin compatible with each other.
Key Features
Long Range Data Integrity
XBee
Low Power
XBee
• Indoor/Urban: up to 100’ (30 m)
• TX Peak Current: 45 mA (@3.3 V)
• Outdoor line-of-sight: up to 300’ (90 m)
• RX Current: 50 mA (@3.3 V)
• Transmit Power: 1 mW (0 dBm)
• Receiver Sensitivity: -92 dBm
XBee-PRO
• Indoor/Urban: up to 300’ (90 m), 200' (60 m) for
International variant
• Outdoor line-of-sight: up to 1 mile (1600 m), 2500'
(750 m) for International variant
• Transmit Power: 63mW (18dBm), 10mW (10dBm)
for International variant
• Receiver Sensitivity: -100 dBm
RF Data Rate: 250,000 bps
Advanced Networking & Security
Retries and Acknowledgements
• Power-down Current: < 10 µA
XBee-PRO
• TX Peak Current: 250mA (150mA for international variant)
• TX Peak Current (RPSMA module only):
340mA (180mA for international variant)
• RX Current: 55 mA (@3.3 V)
• Power-down Current: < 10 µA
ADC and I/O line support
Analog-to-digital conversion, Digital I/O
I/O Line Passing
Easy-to-Use
DSSS (Direct Sequence Spread Spectrum)
No configuration necessary for out-of box
RF communications
Each direct sequence channels has over
65,000 unique network addresses available
Free X-CTU Software
(Testing and configuration software)
Source/Destination Addressing
AT and API Command Modes for 
configuring module parameters
Unicast & Broadcast Communications
Point-to-point, point-to-multipoint 
and peer-to-peer topologies supported
Coordinator/End Device operations
Extensive command set
Small form factor
Transparent and API Operations
128-bit Encryption
Worldwide Acceptance
FCC Approval (USA) Refer to Appendix A [p66] for FCC Requirements.
Systems that contain XBee®/XBee-PRO® RF Modules inherit Digi Certifications.
ISM (Industrial, Scientific & Medical) 2.4 GHz frequency band
Manufactured under ISO 9001:2000 registered standards
XBee®/XBee-PRO® RF Modules are optimized for use in the United States, Canada,
Australia, Japan, and Europe. Contact Digi for complete list of government agency
approvals.
© 2011 Digi International Inc.
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Specifications
Table 1‐01.
Specifications of the XBee®/XBee‐PRO® RF Modules
Specification
XBee
XBee-PRO
Indoor/Urban Range
Up to 100 ft (30 m)
Up to 300 ft. (90 m), up to 200 ft (60 m) International
variant
Outdoor RF line-of-sight Range
Up to 300 ft (90 m)
Up to 1 mile (1600 m), up to 2500 ft (750 m)
international variant
Transmit Power Output
(software selectable)
1mW (0 dBm)
63mW (18dBm)*
10mW (10 dBm) for International variant
RF Data Rate
250,000 bps
250,000 bps
Serial Interface Data Rate
(software selectable)
1200 bps - 250 kbps
(non-standard baud rates also supported)
1200 bps - 250 kbps
(non-standard baud rates also supported)
Receiver Sensitivity
-92 dBm (1% packet error rate)
-100 dBm (1% packet error rate)
Supply Voltage
2.8 – 3.4 V
2.8 – 3.4 V
Transmit Current (typical)
45mA (@ 3.3 V)
250mA (@3.3 V) (150mA for international variant)
RPSMA module only: 340mA (@3.3 V) (180mA for
international variant)
Idle / Receive Current (typical)
50mA (@ 3.3 V)
55mA (@ 3.3 V)
Power-down Current
< 10 µA
< 10 µA
Operating Frequency
ISM 2.4 GHz
ISM 2.4 GHz
Dimensions
0.960” x 1.087” (2.438cm x 2.761cm)
0.960” x 1.297” (2.438cm x 3.294cm)
Operating Temperature
-40 to 85º C (industrial)
-40 to 85º C (industrial)
Antenna Options
Integrated Whip Antenna, Integrated PCB Antenna,
U.FL Connector, RPSMA connector
Integrated Whip Antenna, Chip Antenna, U.FL
Connector, RPSMA connector
Performance
Power Requirements
General
Networking & Security
Supported Network Topologies
Point-to-point, Point-to-multipoint & Peer-to-peer
Number of Channels
(software selectable)
16 Direct Sequence Channels
12 Direct Sequence Channels
Addressing Options
PAN ID, Channel and Addresses
PAN ID, Channel and Addresses
United States (FCC Part 15.247)
OUR-XBEE
OUR-XBEEPRO
Industry Canada (IC)
4214A XBEE
4214A XBEEPRO
Europe (CE)
ETSI
ETSI (Max. 10 dBm transmit power output)*
Japan
R201WW07215214
R201WW08215111 (Max. 10 dBm transmit power
output)*
Australia
C-Tick
C-Tick
Agency Approvals
* See Appendix A for region‐specific certification requirements.
Antenna Options: The ranges specified are typical when using the integrated Whip (1.5 dBi) and Dipole (2.1 dBi) antennas. The Chip antenna option provides advantages in its form factor; however, it typically yields shorter range than the
Whip and Dipole antenna options when transmitting outdoors.For more information, refer to the "XBee Antennas" Knowledgebase Article located on Digi's Support Web site
© 2011 Digi Internatonal, Inc.
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Mechanical Drawings
Figure 1‐01. Mechanical drawings of the XBee®/XBee‐PRO® RF Modules (antenna options not shown)
The XBee and XBee‐PRO RF Modules are pin‐for‐pin compatible.
Mounting Considerations
The XBee®/XBee-PRO® RF Module was designed to mount into a receptacle (socket) and therefore does not require any soldering when mounting it to a board. The XBee Development Kits contain RS-232 and USB interface boards which use two 20-pin receptacles to receive modules.
Figure 1‐02. XBee Module Mounting to an RS‐232 Interface Board.
The receptacles used on Digi development boards are manufactured by Century Interconnect.
Several other manufacturers provide comparable mounting solutions; however, Digi currently uses
the following receptacles:
• Through-hole single-row receptacles - 
Samtec P/N: MMS-110-01-L-SV (or equivalent)
• Surface-mount double-row receptacles - 
Century Interconnect P/N: CPRMSL20-D-0-1 (or equivalent)
• Surface-mount single-row receptacles - 
Samtec P/N: SMM-110-02-SM-S
Digi also recommends printing an outline of the module on the board to indicate the orientation the
module should be mounted.
© 2011 Digi Internatonal, Inc.
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Pin Signals
Figure 1‐03. XBee®/XBee‐PRO® RF Module Pin
Numbers
(top sides shown ‐ shields on bottom)
Table 1‐02.
Pin 1
Pin 20
Pin 10
Pin 11
Pin 1
Pin 20
Pin 10
Pin 11
Pin Assignments for the XBee and XBee‐PRO Modules
(Low‐asserted signals are distinguished with a horizontal line above signal name.)
Pin #
Name
Direction
VCC
Description
Power supply
DOUT
Output
UART Data Out
DIN / CONFIG
Input
UART Data In
DO8*
Output
Digital Output 8
RESET
Input
Module Reset (reset pulse must be at least 200 ns)
PWM0 / RSSI
Output
PWM Output 0 / RX Signal Strength Indicator
PWM1
Output
PWM Output 1
[reserved]
Do not connect
Pin Sleep Control Line or Digital Input 8
DTR / SLEEP_RQ / DI8
Input
10
GND
Ground
11
AD4 / DIO4
Either
Analog Input 4 or Digital I/O 4
12
CTS / DIO7
Either
Clear-to-Send Flow Control or Digital I/O 7
13
ON / SLEEP
Output
Module Status Indicator
14
VREF
Input
Voltage Reference for A/D Inputs
15
Associate / AD5 / DIO5
Either
Associated Indicator, Analog Input 5 or Digital I/O 5
16
RTS / AD6 / DIO6
Either
Request-to-Send Flow Control, Analog Input 6 or Digital I/O 6
17
AD3 / DIO3
Either
Analog Input 3 or Digital I/O 3
18
AD2 / DIO2
Either
Analog Input 2 or Digital I/O 2
19
AD1 / DIO1
Either
Analog Input 1 or Digital I/O 1
20
AD0 / DIO0
Either
Analog Input 0 or Digital I/O 0
* Function is not supported at the time of this release
Notes:
• Minimum connections: VCC, GND, DOUT & DIN
• Minimum connections for updating firmware: VCC, GND, DIN, DOUT, RTS & DTR
• Signal Direction is specified with respect to the module
• Module includes a 50k pull-up resistor attached to RESET
• Several of the input pull-ups can be configured using the PR command
• Unused pins should be left disconnected
Design Notes
The XBee modules do not specifically require any external circuitry or specific connections for
proper operation. However, there are some general design guidelines that are recommended for
help in troubleshooting and building a robust design.
Power Supply Design
Poor power supply can lead to poor radio performance, especially if the supply voltage is not kept
within tolerance or is excessively noisy. To help reduce noise, we recommend placing a 1.0 µF and
8.2 pF capacitor as near as possible to pin 1 on the XBee. If using a switching regulator for the
power supply, switching frequencies above 500 kHz are preferred. Power supply ripple should be
limited to a maximum 100 mV peak to peak.
© 2011 Digi Internatonal, Inc.
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Recommended Pin Connections
The only required pin connections are VCC, GND, DOUT and DIN. To support serial firmware
updates, VCC, GND, DOUT, DIN, RTS, and DTR should be connected.
All unused pins should be left disconnected. All inputs on the radio can be pulled high with internal
pull-up resistors using the PR software command. No specific treatment is needed for unused outputs.
Other pins may be connected to external circuitry for convenience of operation including the Associate LED pin (pin 15) and the commissioning button pin (pin 20). The Associate LED will flash differently depending on the state of the module, and a pushbutton attached to pin 20 can enable
various deployment and troubleshooting functions without having to send UART commands.
If analog sampling is desired, VRef (pin 14) should be attached to a voltage reference.
Board Layout
XBee modules are designed to be self sufficient and have minimal sensitivity to nearby processors,
crystals or other PCB components. As with all PCB designs, Power and Ground traces should be
thicker than signal traces and able to comfortably support the maximum current specifications. No
other special PCB design considerations are required for integrating XBee radios except in the
antenna section.
Antenna Performance
Antenna location is an important consideration for optimal performance. In general, antennas radiate and receive best perpendicular to the direction they point. Thus a vertical antenna's radiation
pattern is strongest across the horizon. Metal objects near the antenna may impede the radiation
pattern. Metal objects between the transmitter and receiver can block the radiation path or reduce
the transmission distance, so antennas should be positioned away from them when possible. Some
objects that are often overlooked are metal poles, metal studs or beams in structures, concrete (it
is usually reinforced with metal rods), vehicles, elevators, ventilation ducts, refrigerators, microwave ovens, batteries, and tall electrolytic capacitors. If the XBee is to be placed inside a metal
enclosure, an external antenna should be used.
XBee units with the Chip or Integrated PCB Antenna should not be placed inside a metal enclosure
or have any ground planes or metal objects above or below the antenna. For best results, place
the XBee at the edge of the host PCB on which it is mounted. Ensure that the ground, power and
signal planes are vacant immediately below the antenna section. Digi recommends allowing a
"keepout" area, which is shown in detail on the next page.
© 2011 Digi Internatonal, Inc.
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
© 2011 Digi Internatonal, Inc.
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Electrical Characteristics
Table 1‐03.
DC Characteristics (VCC = 2.8 ‐ 3.4 VDC)
Symbol
VIL
VIH
VOL
VOH
IIIN
IIOZ
Characteristic
Condition
Min
Typical
Max
Unit
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Input Leakage Current
High Impedance Leakage Current
All Digital Inputs
All Digital Inputs
IOL = 2 mA, VCC >= 2.7 V
IOH = -2 mA, VCC >= 2.7 V
VIN = VCC or GND, all inputs, per pin
VIN = VCC or GND, all I/O High-Z, per pin
0.7 * VCC
VCC - 0.5
0.35 * VCC
0.5
µA
µA
TX
Transmit Current
VCC = 3.3 V
mA
RX
Receive Current
VCC = 3.3 V
mA
PWR-DWN
Power-down Current
SM parameter = 1
0.025
0.025
215, 140
45
(PRO,
(XBee)
Int)
50
55
(XBee)
(PRO)
< 10
µA
Table 1‐04.
Symbol
ADC Characteristics (Operating)
VREFH
Characteristic
VREF - Analog-to-Digital converter
reference range
IREF
VREF - Reference Supply Current
VINDC
Analog Input Voltage1
Condition
Enabled
Disabled or Sleep Mode
Min
Typical
Max
Unit
2.08
VDDAD*
VSSAD - 0.3
200
< 0.01
0.02
VDDAD + 0.3
µA
µA
Unit
1. Maximum electrical operating range, not valid conversion range.
* VDDAD is connected to VCC.
Table 1‐05.
ADC Timing/Performance Characteristics1
Symbol
Characteristic
Min
Typical
Max
RAS
Source Impedance at Input2
Condition
10
VAIN
Analog Input Voltage3
VREFL
RES
Ideal Resolution (1 LSB)4
DNL
Differential Non-linearity5
INL
EZS
Integral Non-linearity6
±0.5
±1.0
LSB
Zero-scale Error7
±0.4
±1.0
LSB
FFS
Full-scale Error8
±0.4
±1.0
LSB
EIL
Input Leakage Error9
±0.05
±5.0
LSB
ETU
Total Unadjusted Error10
±1.1
±2.5
LSB
2.08V < VDDAD < 3.6V
VREFH
2.031
3.516
mV
±0.5
±1.0
LSB
1. All ACCURACY numbers are based on processor and system being in WAIT state (very little activity and no IO switching)
and that adequate low‐pass filtering is present on analog input pins (filter with 0.01 μF to 0.1 μF capacitor between analog
input and VREFL). Failure to observe these guidelines may result in system or microcontroller noise causing accuracy errors
which will vary based on board layout and the type and magnitude of the activity.
Data transmission and reception during data conversion may cause some degradation of these specifications, depending on
the number and timing of packets. It is advisable to test the ADCs in your installation if best accuracy is required.
2. RAS is the real portion of the impedance of the network driving the analog input pin. Values greater than this amount may
not fully charge the input circuitry of the ATD resulting in accuracy error.
3. Analog input must be between VREFL and VREFH for valid conversion. Values greater than VREFH will convert to $3FF.
4. The resolution is the ideal step size or 1LSB = (VREFH–VREFL)/1024
5. Differential non‐linearity is the difference between the current code width and the ideal code width (1LSB). The current
code width is the difference in the transition voltages to and from the current code.
6. Integral non‐linearity is the difference between the transition voltage to the current code and the adjusted ideal transition
voltage for the current code. The adjusted ideal transition voltage is (Current Code–1/2)*(1/((VREFH+EFS)–(VREFL+EZS))).
7. Zero‐scale error is the difference between the transition to the first valid code and the ideal transition to that code. The
Ideal transition voltage to a given code is (Code–1/2)*(1/(VREFH–VREFL)).
8. Full‐scale error is the difference between the transition to the last valid code and the ideal transition to that code. The ideal
transition voltage to a given code is (Code–1/2)*(1/(VREFH–VREFL)).
9. Input leakage error is error due to input leakage across the real portion of the impedance of the network driving the analog
pin. Reducing the impedance of the network reduces this error.
© 2011 Digi Internatonal, Inc.
10
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
10. Total unadjusted error is the difference between the transition voltage to the current code and the ideal straight‐line trans‐
fer function. This measure of error includes inherent quantization error (1/2LSB) and circuit error (differential, integral, zero‐
scale, and full‐scale) error. The specified value of ETU assumes zero EIL (no leakage or zero real source impedance).
© 2011 Digi Internatonal, Inc.
11
2. RF Module Operation
Serial Communications
The XBee®/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).
UART Data Flow
Devices that have a UART interface can connect directly to the pins of the RF module as shown in
the figure below.
Figure 2‐01. System Data Flow Diagram in a UART‐interfaced environment
(Low‐asserted signals distinguished with horizontal line over signal name.)
Serial Data
Data enters the module UART through the DI pin (pin 3) as an asynchronous serial signal. The signal should idle high when no data is being transmitted.
Each data byte consists of a start bit (low), 8 data bits (least significant bit first) and a stop bit
(high). The following figure illustrates the serial bit pattern of data passing through the module.
Figure 2‐02. UART data packet 0x1F (decimal number ʺ31ʺ) as transmitted through the RF module
Example Data Format is 8‐N‐1 (bits ‐ parity ‐ # of stop bits)
Serial communications depend on the two UARTs (the microcontroller's and the RF module's) to be
configured with compatible settings (baud rate, parity, start bits, stop bits, data bits).
The UART baud rate and parity settings on the XBee module can be configured with the BD and NB
commands, respectively. See the command table in Chapter 3 for details.
© 2011 Digi International Inc.
12
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Transparent Operation
By default, XBee®/XBee-PRO® RF Modules operate in Transparent Mode. When operating in this
mode, the modules act as a serial line replacement - all UART data received through the DI pin is
queued up for RF transmission. When RF data is received, the data is sent out the DO pin.
Serial-to-RF Packetization
Data is buffered in the DI buffer until one of the following causes the data to be packetized and
transmitted:
1.
No serial characters are received for the amount of time determined by the RO (Packetization Timeout) parameter. If RO = 0, packetization begins when a character is received.
2.
The maximum number of characters that will fit in an RF packet (100) is received.
3.
The Command Mode Sequence (GT + CC + GT) is received. Any character buffered in the
DI buffer before the sequence is transmitted.
If the module cannot immediately transmit (for instance, if it is already receiving RF data), the
serial data is stored in the DI Buffer. The data is packetized and sent at any RO timeout or when
100 bytes (maximum packet size) are received.
If the DI buffer becomes full, hardware or software flow control must be implemented in order to
prevent overflow (loss of data between the host and module).
API Operation
API (Application Programming Interface) Operation is an alternative to the default Transparent
Operation. The frame-based API extends the level to which a host application can interact with the
networking capabilities of the module.
When in API mode, all data entering and leaving the module is contained in frames that define
operations or events within the module.
Transmit Data Frames (received through the DI pin (pin 3)) include:
• RF Transmit Data Frame
• Command Frame (equivalent to AT commands)
Receive Data Frames (sent out the DO pin (pin 2)) include:
• RF-received data frame
• Command response
• Event notifications such as reset, associate, disassociate, etc.
The API provides alternative means of configuring modules and routing data at the host application layer. A host application can send data frames to the module that contain address and payload
information instead of using command mode to modify addresses. The module will send data
frames to the application containing status packets; as well as source, RSSI and payload information from received data packets.
The API operation option facilitates many operations such as the examples cited below:
-> Transmitting data to multiple destinations without entering Command Mode
-> Receive success/failure status of each transmitted RF packet
-> Identify the source address of each received packet
To implement API operations, refer to API sections [p59].
© 2011 Digi Internatonal, Inc.
13
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Flow Control
Figure 2‐03. Internal Data Flow Diagram
DI (Data In) Buffer
When serial data enters the RF module through the DI pin (pin 3), the data is stored in the DI Buffer until it can be processed.
Hardware Flow Control (CTS). When the DI buffer is 17 bytes away from being full; by default,
the module de-asserts CTS (high) to signal to the host device to stop sending data [refer to D7
(DIO7 Configuration) parameter]. CTS is re-asserted after the DI Buffer has 34 bytes of memory
available.
How to eliminate the need for flow control:
1.
Send messages that are smaller than the DI buffer size (202 bytes).
2.
Interface at a lower baud rate [BD (Interface Data Rate) parameter] than the throughput
data rate.
Case in which the DI Buffer may become full and possibly overflow:
If the module is receiving a continuous stream of RF data, any serial data that arrives on the DI
pin is placed in the DI Buffer. The data in the DI buffer will be transmitted over-the-air when the
module is no longer receiving RF data in the network.
Refer to the RO (Packetization Timeout), BD (Interface Data Rate) and D7 (DIO7 Configuration) command descriptions for more information.
DO (Data Out) Buffer
When RF data is received, the data enters the DO buffer and is sent out the serial port to a host
device. Once the DO Buffer reaches capacity, any additional incoming RF data is lost.
Hardware Flow Control (RTS). If RTS is enabled for flow control (D6 (DIO6 Configuration)
Parameter = 1), data will not be sent out the DO Buffer as long as RTS (pin 16) is de-asserted.
Two cases in which the DO Buffer may become full and possibly overflow:
1.
If the RF data rate is set higher than the interface data rate of the module, the module will
receive data from the transmitting module faster than it can send the data to the host.
2.
If the host does not allow the module to transmit data out from the DO buffer because of
being held off by hardware or software flow control.
Refer to the D6 (DIO6 Configuration) command description for more information.
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ADC and Digital I/O Line Support
The XBee®/XBee-PRO® RF Modules support ADC (Analog-to-digital conversion) and digital I/O
line passing. The following pins support multiple functions:
Table 2‐01.
Pin functions and their associated pin numbers and commands
AD = Analog‐to‐Digital Converter, DIO = Digital Input/Output
Pin functions not applicable to this section are denoted within (parenthesis).
Pin Function
Pin#
AT Command
AD0 / DIO0
20
D0
AD1 / DIO1
19
D1
AD2 / DIO2
18
D2
AD3 / DIO3 / (COORD_SEL)
17
D3
AD4 / DIO4
11
D4
AD5 / DIO5 / (ASSOCIATE)
15
D5
DIO6 / (RTS)
16
D6
DIO7 / (CTS)
12
D7
DI8 / (DTR) / (Sleep_RQ)
D8
To enable ADC and DIO pin functions:
For ADC Support:
Set ATDn = 2
For Digital Input support:
Set ATDn = 3
For Digital Output Low support:
Set ATDn = 4
For Digital Output High support:
Set ATDn = 5
I/O Data Format
I/O data begins with a header. The first byte of the header defines the number of samples forthcoming. The last 2 bytes of the header (Channel Indicator) define which inputs are active. Each bit
represents either a DIO line or ADC channel.
Figure 2‐04. Header
Header
Byte 1
Bytes 2 - 3 (Channel Indicator)
Total number of samples
na
A5
A4
A3
bit 15
A2
A1
A0
D8
D7
D6
D5
D4
D3
D2
D1
D0
bit 0
Bit set to ‘1’ if channel is active
Sample data follows the header and the channel indicator frame is used to determine how to read
the sample data. If any of the DIO lines are enabled, the first 2 bytes are the DIO sample. The
ADC data follows. ADC channel data is represented as an unsigned 10-bit value right-justified on a
16- bit boundary.
Figure 2‐05. Sample Data
Sample Data
DIO Line Data is first (if enabled)
© 2011 Digi Internatonal, Inc.
ADC Line Data
ADCn MSB
ADCn LSB
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
API Support
I/O data is sent out the UART using an API frame. All other data can be sent and received using
Transparent Operation [refer to p13] or API framing if API mode is enabled (AP > 0).
API Operations support two RX (Receive) frame identifiers for I/O data (set 16-bit address to
0xFFFE and the module will do 64-bit addressing):
• 0x82 for RX (Receive) Packet: 64-bit address I/O
• 0x83 for RX (Receive) Packet: 16-bit address I/O
The API command header is the same as shown in the “RX (Receive) Packet: 64-bit Address” and
“RX (Receive) Packet: 64-bit Address” API types [refer to p65]. RX data follows the format
described in the I/O Data Format section [p15].
Applicable Commands: AP (API Enable)
Sleep Support
Automatic wakeup sampling can be suppressed by setting SO bit 1.When an RF module wakes, it
will always do a sample based on any active ADC or DIO lines. This allows sampling based on the
sleep cycle whether it be Cyclic Sleep (SM parameter = 4 or 5) or Pin Sleep (SM = 1 or 2). To
gather more samples when awake, set the IR (Sample Rate) parameter.
For Cyclic Sleep modes: If the IR parameter is set, the module will stay awake until the IT (Samples before TX) parameter is met. The module will stay awake for ST (Time before Sleep) time.
Applicable Commands: IR (Sample Rate), IT (Samples before TX), SM (Sleep Mode), IC (DIO
Change Detect), SO (Sleep Options)
DIO Pin Change Detect
When “DIO Change Detect” is enabled (using the IC command), DIO lines 0-7 are monitored.
When a change is detected on a DIO line, the following will occur:
1.
An RF packet is sent with the updated DIO pin levels. This packet will not contain any ADC
samples.
2.
Any queued samples are transmitted before the change detect data. This may result in
receiving a packet with less than IT (Samples before TX) samples.
Note: Change detect will not affect Pin Sleep wake-up. The D8 pin (DTR/Sleep_RQ/DI8) is the only
line that will wake a module from Pin Sleep. If not all samples are collected, the module will still
enter Sleep Mode after a change detect packet is sent.
Applicable Commands: IC (DIO Change Detect), IT (Samples before TX)
NOTE: Change detect is only supported when the Dx (DIOx Configuration) parameter equals 3,4 or 5.
Sample Rate (Interval)
The Sample Rate (Interval) feature allows enabled ADC and DIO pins to be read periodically on
modules that are not configured to operate in Sleep Mode. When one of the Sleep Modes is
enabled and the IR (Sample Rate) parameter is set, the module will stay awake until IT (Samples
before TX) samples have been collected.
Once a particular pin is enabled, the appropriate sample rate must be chosen. The maximum sample rate that can be achieved while using one A/D line is 1 sample/ms or 1 KHz (Note that the
modem will not be able to keep up with transmission when IR & IT are equal to “1” and that configuring the modem to sample at rates greater than once every 20ms is not recommended).
Applicable Commands: IR (Sample Rate), IT (Samples before TX), SM (Sleep Mode)
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I/O Line Passing
Virtual wires can be set up between XBee®/XBee-PRO® Modules. When an RF data packet is
received that contains I/O data, the receiving module can be setup to update any enabled outputs
(PWM and DIO) based on the data it receives.
Note that I/O lines are mapped in pairs. For example: AD0 can only update PWM0 and DI5 can
only update DO5. The default setup is for outputs not to be updated, which results in the I/O data
being sent out the UART (refer to the IU (Enable I/O Output) command). To enable the outputs to
be updated, the IA (I/O Input Address) parameter must be setup with the address of the module
that has the appropriate inputs enabled. This effectively binds the outputs to a particular module’s
input. This does not affect the ability of the module to receive I/O line data from other modules only its ability to update enabled outputs. The IA parameter can also be setup to accept I/O data
for output changes from any module by setting the IA parameter to 0xFFFF.
When outputs are changed from their non-active state, the module can be setup to return the output level to it non-active state. The timers are set using the Tn (Dn Output Timer) and PT (PWM
Output Timeout) commands. The timers are reset every time a valid I/O packet (passed IA check)
is received. The IC (Change Detect) and IR (Sample Rate) parameters can be setup to keep the
output set to their active output if the system needs more time than the timers can handle.
Note: DI8 cannot be used for I/O line passing.
Applicable Commands: IA (I/O Input Address), Tn (Dn Output Timeout), P0 (PWM0 Configuration), P1 (PWM1 Configuration), M0 (PWM0 Output Level), M1 (PWM1 Output Level), PT (PWM
Output Timeout), RP (RSSSI PWM Timer)
Configuration Example
As an example for a simple A/D link, a pair of RF modules could be set as follows:
Remote Configuration
DL = 0x1234
MY = 0x5678
D0 = 2
D1 = 2
IR = 0x14
IT = 5
Base Configuration
DL = 0x5678
MY = 0x1234
P0 = 2
P1 = 2
IU = 1
IA = 0x5678 (or 0xFFFF)
These settings configure the remote module to sample AD0 and AD1 once each every 20 ms. It
then buffers 5 samples each before sending them back to the base module. The base should then
receive a 32-Byte transmission (20 Bytes data and 12 Bytes framing) every 100 ms.
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XBee®/XBee-PRO® Networks
The following terms will be used to explicate the network operations:
Table 2‐02.
Terms and definitions
Term
Definition
PAN
Personal Area Network - A data communication network that includes one or more End Devices and
optionally a Coordinator.
Coordinator
A Full-function device (FFD) that provides network synchronization by polling nodes [NonBeacon
(w/ Coordinator) networks only]
End Device
When in the same network as a Coordinator - RF modules that rely on a Coordinator for
synchronization and can be put into states of sleep for low-power applications.
Association
The establishment of membership between End Devices and a Coordinator. Association is only
applicable in NonBeacon (w/Coordinator) networks.
Peer-to-Peer
By default, XBee®/XBee-PRO RF Modules are configured to operate within a Peer-to-Peer network
topology and therefore are not dependent upon Master/Slave relationships. NonBeacon systems
operate within a Peer-to-Peer network topology and therefore are not dependent upon Master/
Slave relationships. This means that modules remain synchronized without use of master/server
configurations and each module in the network shares both roles of master and slave. Digi's peerto-peer architecture features fast synchronization times and fast cold start times. This default configuration accommodates a wide range of RF data applications.
Figure 2‐06. Peer‐to‐Peer Architecture
A peer-to-peer network can be established by
configuring each module to operate as an End Device (CE = 0), disabling End Device Association
on all modules (A1 = 0) and setting ID and CH parameters to be identical across the network.
NonBeacon (w/ Coordinator)
A device is configured as a Coordinator by setting the CE (Coordinator Enable) parameter to “1”.
Coordinator power-up is governed by the A2 (Coordinator Association) parameter.
In a Coordinator system, the Coordinator can be configured to use direct or indirect transmissions.
If the SP (Cyclic Sleep Period) parameter is set to “0”, the Coordinator will send data immediately.
Otherwise, the SP parameter determines the length of time the Coordinator will retain the data
before discarding it. Generally, SP (Cyclic Sleep Period) and ST (Time before Sleep) parameters
should be set to match the SP and ST settings of the End Devices.
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Association
Association is the establishment of membership between End Devices and a Coordinator. The
establishment of membership is useful in scenarios that require a central unit (Coordinator) to
relay messages to or gather data from several remote units (End Devices), assign channels or
assign PAN IDs.
An RF data network that consists of one Coordinator and one or more End Devices forms a PAN
(Personal Area Network). Each device in a PAN has a PAN Identifier [ID (PAN ID) parameter]. PAN
IDs must be unique to prevent miscommunication between PANs. The Coordinator PAN ID is set
using the ID (PAN ID) and A2 (Coordinator Association) commands.
An End Device can associate to a Coordinator without knowing the address, PAN ID or channel of
the Coordinator. The A1 (End Device Association) parameter bit fields determine the flexibility of
an End Device during association. The A1 parameter can be used for an End Device to dynamically
set its destination address, PAN ID and/or channel.
For example: If the PAN ID of a Coordinator is known, but the operating channel is not; the A1
command on the End Device should be set to enable the ‘Auto_Associate’ and
‘Reassign_Channel’ bits. Additionally, the ID parameter should be set to match the PAN ID of
the associated Coordinator.
Coordinator / End Device Setup and Operation
To configure a module to operate as a Coordinator, set the CE (Coordinator Enable) parameter to
‘1’. Set the CE parameter of End Devices to ‘0’ (default). Coordinator and End Devices should contain matching firmware versions.
NonBeacon (w/ Coordinator) Systems
The Coordinator can be configured to use direct or indirect transmissions. If the SP (Cyclic Sleep
Period) parameter is set to ‘0’, the Coordinator will send data immediately. Otherwise, the SP
parameter determines the length of time the Coordinator will retain the data before discarding it.
Generally, SP (Cyclic Sleep Period) and ST (Time before Sleep) parameters should be set to match
the SP and ST settings of the End Devices.
Coordinator Start-up
Coordinator power-up is governed by the A2 (Coordinator Association) command. On power-up,
the Coordinator undergoes the following sequence of events:
1. Check A2 parameter- Reassign_PANID Flag
Set (bit 0 = 1) - The Coordinator issues an Active Scan. The Active Scan selects one channel
and transmits a request to the broadcast address (0xFFFF) and broadcast PAN ID (0xFFFF). It
then listens on that channel for beacons from any Coordinator operating on that channel. The
listen time on each channel is determined by the SD (Scan Duration) parameter value.
Once the time expires on that channel, the Active Scan selects another channel and again
transmits the BeaconRequest as before. This process continues until all channels have been
scanned, or until 5 PANs have been discovered. When the Active Scan is complete, the results
include a list of PAN IDs and Channels that are being used by other PANs. This list is used to
assign an unique PAN ID to the new Coordinator. The ID parameter will be retained if it is not
found in the Active Scan results. Otherwise, the ID (PAN ID) parameter setting will be updated
to a PAN ID that was not detected.
Not Set (bit 0 = 0) - The Coordinator retains its ID setting. No Active Scan is performed.
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2. Check A2 parameter - Reassign_Channel Flag (bit 1)
Set (bit 1 = 1) - The Coordinator issues an Energy Scan. The Energy Scan selects one channel
and scans for energy on that channel. The duration of the scan is specified by the SD (Scan
Duration) parameter. Once the scan is completed on a channel, the Energy Scan selects the
next channel and begins a new scan on that channel. This process continues until all channels
have been scanned.
When the Energy Scan is complete, the results include the maximal energy values detected on
each channel. This list is used to determine a channel where the least energy was detected. If
an Active Scan was performed (Reassign_PANID Flag set), the channels used by the detected
PANs are eliminated as possible channels. Thus, the results of the Energy Scan and the Active
Scan (if performed) are used to find the best channel (channel with the least energy that is not
used by any detected PAN). Once the best channel has been selected, the CH (Channel) parameter value is updated to that channel.
Not Set (bit 1 = 0) - The Coordinator retains its CH setting. An Energy Scan is not performed.
3. Start Coordinator
The Coordinator starts on the specified channel (CH parameter) and PAN ID (ID parameter).
Note, these may be selected in steps 1 and/or 2 above. The Coordinator will only allow End
Devices to associate to it if the A2 parameter “AllowAssociation” flag is set. Once the Coordinator has successfully started, the Associate LED will blink 1 time per second. (The LED is solid if
the Coordinator has not started.)
4. Coordinator Modifications
Once a Coordinator has started: 
Modifying the A2 (Reassign_Channel or Reassign_PANID bits), ID, CH or MY parameters will
cause the Coordinator’s MAC to reset (The Coordinator RF module (including volatile RAM) is
not reset). Changing the A2 AllowAssociation bit will not reset the Coordinator’s MAC. In a nonbeaconing system, End Devices that associated to the Coordinator prior to a MAC reset will have
knowledge of the new settings on the Coordinator. Thus, if the Coordinator were to change its
ID, CH or MY settings, the End Devices would no longer be able to communicate with the nonbeacon Coordinator. Once a Coordinator has started, the ID, CH, MY or A2 (Reassign_Channel
or Reassign_PANID bits) should not be changed.
End Device Start-up
End Device power-up is governed by the A1 (End Device Association) command. On power-up, the
End Device undergoes the following sequence of events:
1. Check A1 parameter - AutoAssociate Bit
Set (bit 2 = 1) - End Device will attempt to associate to a Coordinator. (refer to steps 2-3).
Not Set (bit 2 = 0) - End Device will not attempt to associate to a Coordinator. The End Device
will operate as specified by its ID, CH and MY parameters. Association is considered complete
and the Associate LED will blink quickly (5 times per second). When the AutoAssociate bit is not
set, the remaining steps (2-3) do not apply.
2. Discover Coordinator (if Auto-Associate Bit Set)
The End Device issues an Active Scan. The Active Scan selects one channel and transmits a
BeaconRequest command to the broadcast address (0xFFFF) and broadcast PAN ID (0xFFFF). It
then listens on that channel for beacons from any Coordinator operating on that channel. The
listen time on each channel is determined by the SD parameter.
Once the time expires on that channel, the Active Scan selects another channel and again
transmits the BeaconRequest command as before. This process continues until all channels
have been scanned, or until 5 PANs have been discovered. When the Active Scan is complete,
the results include a list of PAN IDs and Channels that are being used by detected PANs.
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The End Device selects a Coordinator to associate with according to the A1 parameter
“Reassign_PANID” and “Reassign_Channel” flags:
Reassign_PANID Bit Set (bit 0 = 1)- End Device can associate with a PAN with any ID value.
Reassign_PANID Bit Not Set (bit 0 = 0) - End Device will only associate with a PAN whose
ID setting matches the ID setting of the End Device.
Reassign_Channel Bit Set (bit 1 = 1) - End Device can associate with a PAN with any CH
value.
Reassign_Channel Bit Not Set (bit 1 = 0)- End Device will only associate with a PAN whose
CH setting matches the CH setting of the End Device.
After applying these filters to the discovered Coordinators, if multiple candidate PANs exist, the
End Device will select the PAN whose transmission link quality is the strongest. If no valid Coordinator is found, the End Device will either go to sleep (as dictated by its SM (Sleep Mode)
parameter) or retry Association.
Note - An End Device will also disqualify Coordinators if they are not allowing association (A2 AllowAssociation bit); or, if the Coordinator is not using the same NonBeacon scheme as the
End Device. (They must both be programmed with NonBeacon code.)
3. Associate to Valid Coordinator
Once a valid Coordinator is found (step 2), the End Device sends an AssociationRequest message to the Coordinator. It then waits for an AssociationConfirmation to be sent from the Coordinator. Once the Confirmation is received, the End Device is Associated and the Associate LED
will blink rapidly (2 times per second). The LED is solid if the End Device has not associated.
4. End Device Changes once an End Device has associated
Changing A1, ID or CH parameters will cause the End Device to disassociate and restart the
Association procedure.
If the End Device fails to associate, the AI command can give some indication of the failure.
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XBee®/XBee-PRO® Addressing
Every RF data packet sent over-the-air contains a Source Address and Destination Address field in
its header. The RF module conforms to the 802.15.4 specification and supports both short 16-bit
addresses and long 64-bit addresses. A unique 64-bit IEEE source address is assigned at the factory and can be read with the SL (Serial Number Low) and SH (Serial Number High) commands.
Short addressing must be configured manually. A module will use its unique 64-bit address as its
Source Address if its MY (16-bit Source Address) value is “0xFFFF” or “0xFFFE”.
To send a packet to a specific module using 64-bit addressing: Set the Destination Address (DL +
DH) of the sender to match the Source Address (SL + SH) of the intended destination module.
To send a packet to a specific module using 16-bit addressing: Set DL (Destination Address Low)
parameter to equal the MY parameter of the intended destination module and set the DH (Destination Address High) parameter to '0'.
Unicast Mode
By default, the RF module operates in Unicast Mode. Unicast Mode is the only mode that supports
retries. While in this mode, receiving modules send an ACK (acknowledgement) of RF packet
reception to the transmitter. If the transmitting module does not receive the ACK, it will re-send
the packet up to three times or until the ACK is received.
Short 16-bit addresses. The module can be configured to use short 16-bit addresses as the
Source Address by setting (MY < 0xFFFE). Setting the DH parameter (DH = 0) will configure the
Destination Address to be a short 16-bit address (if DL < 0xFFFE). For two modules to communicate using short addressing, the Destination Address of the transmitter module must match the
MY parameter of the receiver.
The following table shows a sample network configuration that would enable Unicast Mode communications using short 16-bit addresses.
Table 2‐03.
Sample Unicast Network Configuration (using 16‐bit addressing)
Parameter
MY (Source Address)
DH (Destination Address High)
DL (Destination Address Low)
RF Module 1
0x01
0x02
RF Module 2
0x02
0x01
Long 64-bit addresses. The RF module’s serial number (SL parameter concatenated to the SH
parameter) can be used as a 64-bit source address when the MY (16-bit Source Address) parameter is disabled. When the MY parameter is disabled (MY = 0xFFFF or 0xFFFE), the module’s source
address is set to the 64-bit IEEE address stored in the SH and SL parameters.
When an End Device associates to a Coordinator, its MY parameter is set to 0xFFFE to enable 64bit addressing. The 64-bit address of the module is stored as SH and SL parameters. To send a
packet to a specific module, the Destination Address (DL + DH) on the sender must match the
Source Address (SL + SH) of the desired receiver.
Broadcast Mode
Any RF module within range will accept a packet that contains a broadcast address. When configured to operate in Broadcast Mode, receiving modules do not send ACKs (Acknowledgements) and
transmitting modules do not automatically re-sent packets as is the case in Unicast Mode.
To send a broadcast packet to all modules regardless of 16-bit or 64-bit addressing, set the destination addresses of all the modules as shown below.
Sample Network Configuration (All modules in the network):
• DL (Destination Low Address) = 0x0000FFFF
If RR is set to 0, only one packet is broadcast. If RR > 0, (RR + 2) packets are sent in each broadcast. No acknowl‐
edgements are returned. See also the RR command description.
• DH (Destination High Address) = 0x00000000 (default value)
NOTE: When programming the module, parameters are entered in hexadecimal notation (without the “0x” pre‐
fix). Leading zeroes may be omitted.
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Modes of Operation
XBee®/XBee-PRO® RF Modules operate in five modes.
Figure 2‐07. Modes of Operation
Idle Mode
When not receiving or transmitting data, the RF module is in Idle Mode. The module shifts into the
other modes of operation under the following conditions:
• Transmit Mode (Serial data is received in the DI Buffer)
• Receive Mode (Valid RF data is received through the antenna)
• Sleep Mode (Sleep Mode condition is met)
• Command Mode (Command Mode Sequence is issued)
Transmit/Receive Modes
RF Data Packets
Each transmitted data packet contains a Source Address and Destination Address field. The Source
Address matches the address of the transmitting module as specified by the MY (Source Address)
parameter (if MY >= 0xFFFE), the SH (Serial Number High) parameter or the SL (Serial Number
Low) parameter. The  field is created from the DH (Destination Address
High) and DL (Destination Address Low) parameter values. The Source Address and/or Destination
Address fields will either contain a 16-bit short or long 64-bit long address.
The RF data packet structure follows the 802.15.4 specification.
[Refer to the XBee/XBee-PRO Addressing section for more information]
Direct and Indirect Transmission
There are two methods to transmit data:
• Direct Transmission - data is transmitted immediately to the Destination Address
• Indirect Transmission - A packet is retained for a period of time and is only transmitted after
the destination module (Source Address = Destination Address) requests the data.
Indirect Transmissions can only occur on a Coordinator. Thus, if all nodes in a network are End
Devices, only Direct Transmissions will occur. Indirect Transmissions are useful to ensure packet
delivery to a sleeping node. The Coordinator currently is able to retain up to 2 indirect messages.
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Direct Transmission
A Coordinator can be configured to use only Direct Transmission by setting the SP (Cyclic Sleep
Period) parameter to "0". Also, a Coordinator using indirect transmissions will revert to direct
transmission if it knows the destination module is awake.
To enable this behavior, the ST (Time before Sleep) value of the Coordinator must be set to match
the ST value of the End Device. Once the End Device either transmits data to the Coordinator or
polls the Coordinator for data, the Coordinator will use direct transmission for all subsequent data
transmissions to that module address until ST time occurs with no activity (at which point it will
revert to using indirect transmissions for that module address). "No activity" means no transmission or reception of messages with a specific address. Global messages will not reset the ST timer.
Indirect Transmission
To configure Indirect Transmissions in a PAN (Personal Area Network), the SP (Cyclic Sleep Period)
parameter value on the Coordinator must be set to match the longest sleep value of any End
Device. The sleep period value on the Coordinator determines how long (time or number of beacons) the Coordinator will retain an indirect message before discarding it.
An End Device must poll the Coordinator once it wakes from Sleep to determine if the Coordinator
has an indirect message for it. For Cyclic Sleep Modes, this is done automatically every time the
module wakes (after SP time). For Pin Sleep Modes, the A1 (End Device Association) parameter
value must be set to enable Coordinator polling on pin wake-up. Alternatively, an End Device can
use the FP (Force Poll) command to poll the Coordinator as needed.
CCA (Clear Channel Assessment)
Prior to transmitting a packet, a CCA (Clear Channel Assessment) is performed on the channel to
determine if the channel is available for transmission. The detected energy on the channel is compared with the CA (Clear Channel Assessment) parameter value. If the detected energy exceeds
the CA parameter value, the packet is not transmitted.
Also, a delay is inserted before a transmission takes place. This delay is able to be set using the RN
(Backoff Exponent) parameter. If RN is set to “0”, then there is no delay before the first CCA is performed. The RN parameter value is the equivalent of the “minBE” parameter in the 802.15.4 specification. The transmit sequence follows the 802.15.4 specification.
By default, the MM (MAC Mode) parameter = 0. On a CCA failure, the module will attempt to resend the packet up to two additional times.
When in Unicast packets with RR (Retries) = 0, the module will execute two CCA retries. Broadcast
packets always get two CCA retries.
Acknowledgement
If the transmission is not a broadcast message, the module will expect to receive an acknowledgement from the destination node. If an acknowledgement is not received, the packet will be resent
up to 3 more times. If the acknowledgement is not received after all transmissions, an ACK failure
is recorded.
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Sleep Mode
Sleep Modes enable the RF module to enter states of low-power consumption when not in use. In
order to enter Sleep Mode, one of the following conditions must be met (in addition to the module
having a non-zero SM parameter value):
• Sleep_RQ (pin 9) is asserted and the module is in a pin sleep mode (SM = 1, 2, or 5)
• The module is idle (no data transmission or reception) for the amount of time defined by the
ST (Time before Sleep) parameter. [NOTE: ST is only active when SM = 4-5.]
Table 2‐04.
Sleep Mode Configurations
Sleep Mode Transition into
Setting
Sleep Mode
Transition out of
Sleep Mode (wake)
Pin Hibernate
(SM = 1)
Assert (high) Sleep_RQ
(pin 9)
Pin/Host-controlled /
De-assert (low) Sleep_RQ NonBeacon systems
only / Lowest Power
Pin Doze
(SM = 2)
Assert (high) Sleep_RQ
(pin 9)
Pin/Host-controlled /
De-assert (low) Sleep_RQ NonBeacon systems
(SM)
only / Fastest wake-up
< 50 µA
Cyclic Sleep
(SM = 4)
Automatic transition to
Sleep Mode as defined by
the SM (Sleep Mode) and
ST (Time before Sleep)
parameters.
Transition occurs after the
cyclic sleep time interval
elapses. The time interval
is defined by the SP
(Cyclic Sleep Period)
parameter.
RF module wakes in
pre-determined time
intervals to detect if RF (SM), SP, ST
data is present / When
SM = 5
< 50 µA
when sleeping
Cyclic Sleep
(SM = 5)
Automatic transition to
Sleep Mode as defined by
the SM (Sleep Mode) and
ST (Time before Sleep)
parameters or on a falling
edge transition of the
SLEEP_RQ pin.
Transition occurs after the
cyclic sleep time interval
elapses. The time interval
is defined by the SP
(Cyclic Sleep Period)
parameter.
RF module wakes in
pre-determined time
intervals to detect if RF
(SM), SP, ST
data is present. Module
also wakes on a falling
edge of SLEEP_RQ
< 50 µA
when sleeping
Characteristics
Related
Power
Commands Consumption
(SM)
< 10 µA (@3.0
VCC)
The SM command is central to setting Sleep Mode configurations. By default, Sleep Modes are disabled (SM = 0) and the module remains in Idle/Receive Mode. When in this state, the module is
constantly ready to respond to serial or RF activity.
Pin/Host-controlled Sleep Modes
The transient current when waking from pin sleep (SM = 1 or 2) does not exceed the idle current
of the module. The current ramps up exponentially to its idle current.
Pin Hibernate (SM = 1)
• Pin/Host-controlled
• Typical power-down current: < 10 µA (@3.0 VCC)
• Typical wake-up time: 10.2 msec
Pin Hibernate Mode minimizes quiescent power (power consumed when in a state of rest or inactivity). This mode is voltage level-activated; when Sleep_RQ (pin 9) is asserted, the module will
finish any transmit, receive or association activities, enter Idle Mode, and then enter a state of
sleep. The module will not respond to either serial or RF activity while in pin sleep.
To wake a sleeping module operating in Pin Hibernate Mode, de-assert Sleep_RQ (pin 9). The
module will wake when Sleep_RQ is de-asserted and is ready to transmit or receive when the CTS
line is low. When waking the module, the pin must be de-asserted at least two 'byte times' after
CTS goes low. This assures that there is time for the data to enter the DI buffer.
Pin Doze (SM = 2)
• Pin/Host-controlled
• Typical power-down current: < 50 µA
• Typical wake-up time: 2.6 msec
Pin Doze Mode functions as does Pin Hibernate Mode; however, Pin Doze features faster wake-up
time and higher power consumption.
To wake a sleeping module operating in Pin Doze Mode, de-assert Sleep_RQ (pin 9). The module
will wake when Sleep_RQ is de-asserted and is ready to transmit or receive when the CTS line is
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
low. When waking the module, the pin must be de-asserted at least two 'byte times' after CTS
goes low. This assures that there is time for the data to enter the DI buffer.
Cyclic Sleep Modes
Cyclic Sleep Remote (SM = 4)
• Typical Power-down Current: < 50 µA (when asleep)
• Typical wake-up time: 2.6 msec
The Cyclic Sleep Modes allow modules to periodically check for RF data. When the SM parameter is
set to ‘4’, the module is configured to sleep, then wakes once a cycle to check for data from a
module configured as a Cyclic Sleep Coordinator (SM = 0, CE = 1). The Cyclic Sleep Remote sends
a poll request to the coordinator at a specific interval set by the SP (Cyclic Sleep Period) parameter. The coordinator will transmit any queued data addressed to that specific remote upon receiving the poll request.
If no data is queued for the remote, the coordinator will not transmit and the remote will return to
sleep for another cycle. If queued data is transmitted back to the remote, it will stay awake to
allow for back and forth communication until the ST (Time before Sleep) timer expires.
Also note that CTS will go low each time the remote wakes, allowing for communication initiated
by the remote host if desired.
Cyclic Sleep Remote with Pin Wake-up (SM = 5)
Use this mode to wake a sleeping remote module through either the RF interface or by the deassertion of Sleep_RQ for event-driven communications. The cyclic sleep mode works as described
above (Cyclic Sleep Remote) with the addition of a pin-controlled wake-up at the remote module.
The Sleep_RQ pin is edge-triggered, not level-triggered. The module will wake when a low is
detected then set CTS low as soon as it is ready to transmit or receive.
Any activity will reset the ST (Time before Sleep) timer so the module will go back to sleep only
after there is no activity for the duration of the timer. Once the module wakes (pin-controlled), further pin activity is ignored. The module transitions back into sleep according to the ST time
regardless of the state of the pin.
[Cyclic Sleep Coordinator (SM = 6)]
• Typical current = Receive current
• Always awake
NOTE: The SM=6 parameter value exists solely for backwards compatibility with firmware version
1.x60. If backwards compatibility with the older firmware version is not required, always use the CE
(Coordinator Enable) command to configure a module as a Coordinator.
This mode configures a module to wake cyclic sleeping remotes through RF interfacing. The Coordinator will accept a message addressed to a specific remote 16 or 64-bit address and hold it in a
buffer until the remote wakes and sends a poll request. Messages not sent directly (buffered and
requested) are called "Indirect messages". The Coordinator only queues one indirect message at a
time. The Coordinator will hold the indirect message for a period 2.5 times the sleeping period
indicated by the SP (Cyclic Sleep Period) parameter. The Coordinator's SP parameter should be set
to match the value used by the remotes.
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Command Mode
To modify or read RF Module parameters, the module must first enter into Command Mode - a
state in which incoming characters are interpreted as commands. Two Command Mode options are
supported: AT Command Mode [refer to section below] and API Command Mode [p59].
AT Command Mode
To Enter AT Command Mode:
Send the 3-character command sequence “+++” and observe guard times before and after the
command characters. [Refer to the “Default AT Command Mode Sequence” below.]
Default AT Command Mode Sequence (for transition to Command Mode):
• No characters sent for one second [GT (Guard Times) parameter = 0x3E8]
• Input three plus characters (“+++”) within one second [CC (Command Sequence Character)
parameter = 0x2B.]
• No characters sent for one second [GT (Guard Times) parameter = 0x3E8]
All of the parameter values in the sequence can be modified to reflect user preferences.
NOTE: Failure to enter AT Command Mode is most commonly due to baud rate mismatch. Ensure the
‘Baud’ setting on the “PC Settings” tab matches the interface data rate of the RF module. By default,
the BD parameter = 3 (9600 bps).
To Send AT Commands:
Send AT commands and parameters using the syntax shown below.
Figure 2‐08. Syntax for sending AT Commands
To read a parameter value stored in the RF module’s register, omit the parameter field.
The preceding example would change the RF module Destination Address (Low) to “0x1F”. To store
the new value to non-volatile (long term) memory, subsequently send the WR (Write) command.
For modified parameter values to persist in the module’s registry after a reset, changes must be saved
to non-volatile memory using the WR (Write) Command. Otherwise, parameters are restored to previously saved values after the module is reset.
System Response. When a command is sent to the module, the module will parse and execute
the command. Upon successful execution of a command, the module returns an “OK” message. If
execution of a command results in an error, the module returns an “ERROR” message.
To Exit AT Command Mode:
1.
Send the ATCN (Exit Command Mode) command (followed by a carriage return).
[OR]
2.
If no valid AT Commands are received within the time specified by CT (Command Mode
Timeout) Command, the RF module automatically returns to Idle Mode.
For an example of programming the RF module using AT Commands and descriptions of each configurable parameter, refer to the RF Module Configuration chapter [p28].
© 2011 Digi Internatonal, Inc.
27
3. RF Module Configuration
Programming the RF Module
Refer to the Command Mode section [p27] for more information about entering Command Mode,
sending AT commands and exiting Command Mode. For information regarding module programming using API Mode, refer to the API Operation sections [p59].
Programming Examples
Setup
The programming examples in this section require the installation of Digi's X-CTU Software and
a serial connection to a PC. (Digi stocks RS-232 and USB boards to facilitate interfacing with a
PC.)
1.
Install Digi's X-CTU Software to a PC by double-clicking the "setup_X-CTU.exe" file. (The file
is located on the Digi CD and www.digi.com/xctu.)
2.
Mount the RF module to an interface board, then connect the module assembly to a PC.
3.
Launch the X-CTU Software and select the 'PC Settings' tab. Verify the baud and parity settings of the Com Port match those of the RF module.
NOTE: Failure to enter AT Command Mode is most commonly due to baud rate mismatch.
Ensure the ‘Baud’ setting on the ‘PC Settings’ tab matches the interface data rate of the RF module. By default, the BD parameter = 3 (which corresponds to 9600 bps).
Sample Configuration: Modify RF Module Destination Address
Example: Utilize the X-CTU “Terminal” tab to change the RF module's DL (Destination Address
Low) parameter and save the new address to non-volatile memory.
After establishing a serial connection between the RF module and a PC [refer to the 'Setup' section above], select the “Terminal” tab of the X-CTU Software and enter the following command
lines (‘CR’ stands for carriage return):
Method 1 (One line per command)
Send AT Command
+++
ATDL 
ATDL1A0D 
ATWR 
ATCN 
System Response
OK  (Enter into Command Mode)
{current value}  (Read Destination Address Low)
OK  (Modify Destination Address Low)
OK  (Write to non-volatile memory)
OK  (Exit Command Mode)
Method 2 (Multiple commands on one line)
Send AT Command
+++
ATDL 
ATDL1A0D,WR,CN 
System Response
OK  (Enter into Command Mode)
{current value}  (Read Destination Address Low)
OK OK OK
Sample Configuration: Restore RF Module Defaults
Example: Utilize the X-CTU “Modem Configuration” tab to restore default parameter values.
After establishing a connection between the module and a PC [refer to the 'Setup' section
above], select the “Modem Configuration” tab of the X-CTU Software.
1.
Select the 'Read' button.
2.
Select the 'Restore' button.
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Remote Configuration Commands
The API firmware has provisions to send configuration commands to remote devices using the
Remote Command Request API frame (see API Operation). This API frame can be used to send
commands to a remote module to read or set command parameters.
The API firmware has provisions to send configuration commands (set or read) to a remote module using the Remote Command Request API frame (see API Operations). Remote commands can
be issued to read or set command parameters on a remote device.
Sending a Remote Command
To send a remote command, the Remote Command Request frame should be populated with values for the 64 bit and 16 bit addresses. If 64 bit addressing is desired then the 16 bit address field
should be filled with 0xFFFE. If any value other than 0xFFFE is used in the 16 bit address field then
the 64 bit address field will be ignored and 16 bit addressing will be used. If a command response
is desired, the Frame ID should be set to a non-zero value.
Applying Changes on Remote
When remote commands are used to change command parameter settings on a remote device,
parameter changes do not take effect until the changes are applied. For example, changing the BD
parameter will not change the actual serial interface rate on the remote until the changes are
applied. Changes can be applied using remote commands in one of three ways:
Set the apply changes option bit in the API frame
Issue an AC command to the remote device
Issue a WR + FR command to the remote device to save changes and reset the device.
Remote Command Responses
If the remote device receives a remote command request transmission, and the API frame ID is
non-zero, the remote will send a remote command response transmission back to the device that
sent the remote command. When a remote command response transmission is received, a device
sends a remote command response API frame out its UART. The remote command response indicates the status of the command (success, or reason for failure), and in the case of a command
query, it will include the register value.
The device that sends a remote command will not receive a remote command response frame if:
The destination device could not be reached
The frame ID in the remote command request is set to 0.
Command Reference Tables
XBee®/XBee-PRO® RF Modules expect numerical values in hexadecimal. Hexadecimal values are
designated by a “0x” prefix. Decimal equivalents are designated by a “d” suffix. Commands are
contained within the following command categories (listed in the order that their tables appear):
• Special
• Networking & Security
• RF Interfacing
• Sleep (Low Power)
• Serial Interfacing
• I/O Settings
• Diagnostics
• AT Command Options
All modules within a PAN should operate using the same firmware version.
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Special
Table 3‐01.
XBee‐PRO Commands ‐ Special
AT
Command
Command
Category
Name and Description
Parameter Range
Default
WR
Special
Write. Write parameter values to non-volatile memory so that parameter modifications
persist through subsequent power-up or reset.
Note: Once WR is issued, no additional characters should be sent to the module until
after the response "OK\r" is received.
RE
Special
Restore Defaults. Restore module parameters to factory defaults.
Special
Software Reset. Responds immediately with an OK then performs a hard reset
~100ms later.
FR ( v1.x80*)
* Firmware version in which the command was first introduced (firmware versions are numbered in hexadecimal notation.)
Networking & Security
Table 3‐02.
XBee®/XBee‐PRO® Commands ‐ Networking & Security (Sub‐categories designated within {brackets})
AT
Command
Command
Category
Name and Description
Parameter Range
Default
CH
Networking
{Addressing}
Channel. Set/Read the channel number used for transmitting and receiving data
between RF modules (uses 802.15.4 protocol channel numbers).
0x0B - 0x1A (XBee)
0x0C - 0x17 (XBee-PRO)
0x0C (12d)
ID
Networking
{Addressing}
PAN ID. Set/Read the PAN (Personal Area Network) ID.
Use 0xFFFF to broadcast messages to all PANs.
0 - 0xFFFF
0x3332
(13106d)
DH
Networking
{Addressing}
Destination Address High. Set/Read the upper 32 bits of the 64-bit destination
address. When combined with DL, it defines the destination address used for
0 - 0xFFFFFFFF
transmission. To transmit using a 16-bit address, set DH parameter to zero and DL less
than 0xFFFF. 0x000000000000FFFF is the broadcast address for the PAN.
DL
Networking
{Addressing}
Destination Address Low. Set/Read the lower 32 bits of the 64-bit destination
address. When combined with DH, DL defines the destination address used for
0 - 0xFFFFFFFF
transmission. To transmit using a 16-bit address, set DH parameter to zero and DL less
than 0xFFFF. 0x000000000000FFFF is the broadcast address for the PAN.
MY
Networking
{Addressing}
16-bit Source Address. Set/Read the RF module 16-bit source address. Set MY =
0xFFFF to disable reception of packets with 16-bit addresses. 64-bit source address
(serial number) and broadcast address (0x000000000000FFFF) is always enabled.
0 - 0xFFFF
SH
Networking
{Addressing}
Serial Number High. Read high 32 bits of the RF module's unique IEEE 64-bit
address. 64-bit source address is always enabled.
0 - 0xFFFFFFFF [read-only]
Factory-set
SL
Networking
{Addressing}
Serial Number Low. Read low 32 bits of the RF module's unique IEEE 64-bit address.
0 - 0xFFFFFFFF [read-only]
64-bit source address is always enabled.
Factory-set
RR ( v1.xA0*)
Networking
{Addressing}
XBee Retries. Set/Read the maximum number of retries the module will execute in
addition to the 3 retries provided by the 802.15.4 MAC. For each XBee retry, the
802.15.4 MAC can execute up to 3 retries.
0-6
RN
Networking
{Addressing}
Random Delay Slots. Set/Read the minimum value of the back-off exponent in the
CSMA-CA algorithm that is used for collision avoidance. If RN = 0, collision avoidance
is disabled during the first iteration of the algorithm (802.15.4 - macMinBE).
0 - 3 [exponent]
MM ( v1.x80*)
Networking
{Addressing}
MAC Mode. MAC Mode. Set/Read MAC Mode value. MAC Mode enables/disables the
use of a Digi header in the 802.15.4 RF packet. When Modes 1 or 3 are enabled
(MM=1,3), duplicate packet detection is enabled as well as certain AT commands.
Please see the detailed MM description on page 47 for additional information.
0-3
0 = Digi Mode
1 = 802.15.4 (no ACKs)
2 = 802.15.4 (with ACKs)
3 = Digi Mode (no ACKs)
Networking
{Identification}
Node Identifier. Stores a string identifier. The register only accepts printable ASCII
data. A string can not start with a space. Carriage return ends command. Command will
automatically end when maximum bytes for the string have been entered. This string is
returned as part of the ND (Node Discover) command. This identifier is also used with
the DN (Destination Node) command.
20-character ASCII string
ND ( v1.x80*)
Networking
{Identification}
Node Discover. Discovers and reports all RF modules found. The following information
is reported for each module discovered (the example cites use of Transparent operation
(AT command format) - refer to the long ND command description regarding differences
between Transparent and API operation).
MY
SH
SL
optional 20-character NI value
DB
NI
The amount of time the module allows for responses is determined by the NT
parameter. In Transparent operation, command completion is designated by a 
(carriage return). ND also accepts a Node Identifier as a parameter. In this case, only a
module matching the supplied identifier will respond. If ND self-response is enabled
(NO=1) the module initiating the node discover will also output a response for itself.
NT ( v1.xA0*)
Networking
{Identification}
Node Discover Time. Set/Read the amount of time a node will wait for responses from
0x01 - 0xFC [x 100 ms]
other nodes when using the ND (Node Discover) command.
NI ( v1.x80*)
© 2011 Digi Internatonal, Inc.
0x19
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Table 3‐02.
XBee®/XBee‐PRO® Commands ‐ Networking & Security (Sub‐categories designated within {brackets})
AT
Command
Command
Category
Name and Description
Parameter Range
Default
NO (v1xC5)
Networking
{Identification}
Node Discover Options. Enables node discover self-response on the module.
0-1
DN ( v1.x80*)
Networking
{Identification}
Destination Node. Resolves an NI (Node Identifier) string to a physical address. The
following events occur upon successful command execution:
1. DL and DH are set to the address of the module with the matching Node Identifier.
2. “OK” is returned.
20-character ASCII string
3. RF module automatically exits AT Command Mode
If there is no response from a module within 200 msec or a parameter is not specified
(left blank), the command is terminated and an “ERROR” message is returned.
CE ( v1.x80*)
Networking
{Association}
Coordinator Enable. Set/Read the coordinator setting.
Networking
{Association}
Scan Channels. Set/Read list of channels to scan for all Active and Energy Scans as a
bitfield. This affects scans initiated in command mode (AS, ED) and during End Device
Association and Coordinator startup:
0 - 0xFFFF [bitfield]
bit 0 - 0x0B
bit 4 - 0x0F
bit 8 - 0x13
bit12 - 0x17 
(bits 0, 14, 15 not allowed on
bit 1 - 0x0C
bit 5 - 0x10
bit 9 - 0x14
bit13 - 0x18
the XBee-PRO)
bit 2 - 0x0D
bit 6 - 0x11
bit 10 - 0x15
bit14 - 0x19
bit 3 - 0x0E
bit 7 - 0x12
bit 11 - 0x16
bit 15 - 0x1A
0x1FFE
(all XBeePRO
Channels)
Networking
{Association}
Scan Duration. Set/Read the scan duration exponent.
End Device - Duration of Active Scan during Association.
Coordinator - If ‘ReassignPANID’ option is set on Coordinator [refer to A2 parameter],
SD determines the length of time the Coordinator will scan channels to locate existing
PANs. If ‘ReassignChannel’ option is set, SD determines how long the Coordinator will
perform an Energy Scan to determine which channel it will operate on.
‘Scan Time’ is measured as (# of channels to scan] * (2 ^ SD) * 15.36ms). The number 0-0x0F [exponent]
of channels to scan is set by the SC command. The XBee can scan up to 16 channels
(SC = 0xFFFF). The XBee PRO can scan up to 13 channels (SC = 0x3FFE).
Example: The values below show results for a 13 channel scan:
If SD = 0, time = 0.18 sec SD = 8, time = 47.19 sec
SD = 2, time = 0.74 sec
SD = 10, time = 3.15 min
SD = 4, time = 2.95 sec
SD = 12, time = 12.58 min
SD = 6, time = 11.80 sec SD = 14, time = 50.33 min
Networking
{Association}
End Device Association. Set/Read End Device association options. 
bit 0 - ReassignPanID
0 - Will only associate with Coordinator operating on PAN ID that matches module ID
1 - May associate with Coordinator operating on any PAN ID
bit 1 - ReassignChannel
0 - Will only associate with Coordinator operating on matching CH Channel setting
1 - May associate with Coordinator operating on any Channel
bit 2 - AutoAssociate
0 - 0x0F [bitfield]
0 - Device will not attempt Association
1 - Device attempts Association until success
Note: This bit is used only for Non-Beacon systems. End Devices in Beacon-enabled
system must always associate to a Coordinator
bit 3 - PollCoordOnPinWake
0 - Pin Wake will not poll the Coordinator for indirect (pending) data 
1 - Pin Wake will send Poll Request to Coordinator to extract any pending data
bits 4 - 7 are reserved
Networking
{Association}
Coordinator Association. Set/Read Coordinator association options.
bit 0 - ReassignPanID
0 - Coordinator will not perform Active Scan to locate available PAN ID. It will operate 
on ID (PAN ID).
1 - Coordinator will perform Active Scan to determine an available ID (PAN ID). If a
PAN ID conflict is found, the ID parameter will change.
bit 1 - ReassignChannel -
0 - Coordinator will not perform Energy Scan to determine free channel. It will operate 0 - 7 [bitfield]
on the channel determined by the CH parameter. 
1 - Coordinator will perform Energy Scan to find a free channel, then operate on that 
channel.
bit 2 - AllowAssociation -
0 - Coordinator will not allow any devices to associate to it. 
1 - Coordinator will allow devices to associate to it.
bits 3 - 7 are reserved
SC ( v1.x80*)
SD ( v1.x80*)
A1 ( v1.x80*)
A2 ( v1.x80*)
© 2011 Digi Internatonal, Inc.
0-1
0 = End Device
1 = Coordinator
31
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Table 3‐02.
AT
Command
XBee®/XBee‐PRO® Commands ‐ Networking & Security (Sub‐categories designated within {brackets})
Command
Category
Name and Description
AI ( v1.x80*)
Networking
{Association}
Association Indication. Read errors with the last association request:
0x00 - Successful Completion - Coordinator successfully started or End Device
association complete
0x01 - Active Scan Timeout 
0x02 - Active Scan found no PANs 
0x03 - Active Scan found PAN, but the CoordinatorAllowAssociation bit is not set
0x04 - Active Scan found PAN, but Coordinator and End Device are not 
configured to support beacons 
0x05 - Active Scan found PAN, but the Coordinator ID parameter does not match
the ID parameter of the End Device
0x06 - Active Scan found PAN, but the Coordinator CH parameter does not match the 
CH parameter of the End Device
0x07 - Energy Scan Timeout
0x08 - Coordinator start request failed
0 - 0x13 [read-only]
0x09 - Coordinator could not start due to invalid parameter
0x0A - Coordinator Realignment is in progress
0x0B - Association Request not sent
0x0C - Association Request timed out - no reply was received
0x0D - Association Request had an Invalid Parameter
0x0E - Association Request Channel Access Failure. Request was not transmitted - 
CCA failure
0x0F - Remote Coordinator did not send an ACK after Association Request was sent
0x10 - Remote Coordinator did not reply to the Association Request, but an ACK was 
received after sending the request
0x11 - [reserved]
0x12 - Sync-Loss - Lost synchronization with a Beaconing Coordinator
0x13 - Disassociated - No longer associated to Coordinator
0xFF - RF Module is attempting to associate
DA ( v1.x80*)
Networking
{Association}
Force Disassociation. End Device will immediately disassociate from a Coordinator (if
associated) and reattempt to associate.
FP ( v1.x80*)
Networking
{Association}
Force Poll. Request indirect messages being held by a coordinator.
Networking
{Association}
Active Scan. Send Beacon Request to Broadcast Address (0xFFFF) and Broadcast
PAN (0xFFFF) on every channel. The parameter determines the time the radio will
listen for Beacons on each channel. A PanDescriptor is created and returned for every
Beacon received from the scan. Each PanDescriptor contains the following information:
CoordAddress (SH, SL) 
CoordPanID (ID)
CoordAddrMode 
0x02 = 16-bit Short Address 
0x03 = 64-bit Long Address 
Channel (CH parameter)  
SecurityUse 
ACLEntry 
SecurityFailure 
SuperFrameSpec (2 bytes):
bit 15 - Association Permitted (MSB) 
0-6
bit 14 - PAN Coordinator 
bit 13 - Reserved 
bit 12 - Battery Life Extension
bits 8-11 - Final CAP Slot 
bits 4-7 - Superframe Order 
bits 0-3 - Beacon Order 
GtsPermit 
RSSI (RSSI is returned as -dBm)
TimeStamp (3 bytes) 

A carriage return  is sent at the end of the AS command. The Active Scan is
capable of returning up to 5 PanDescriptors in a scan. The actual scan time on each
channel is measured as Time = [(2 ^SD PARAM) * 15.36] ms. Note the total scan time is
this time multiplied by the number of channels to be scanned (16 for the XBee and 13
for the XBee-PRO). Also refer to SD command description.
ED ( v1.x80*)
Networking
{Association}
Energy Scan. Send an Energy Detect Scan. This parameter determines the length of
scan on each channel. The maximal energy on each channel is returned & each value
is followed by a carriage return. An additional carriage return is sent at the end of the
command. The values returned represent the detected energy level in units of -dBm.
0-6
The actual scan time on each channel is measured as Time = [(2 ^ED) * 15.36] ms.
Note the total scan time is this time multiplied by the number of channels to be scanned
(refer to SD parameter).
EE ( v1.xA0*)
Networking
{Security}
AES Encryption Enable. Disable/Enable 128-bit AES encryption support. Use in
conjunction with the KY command.
0-1
0 (disabled)
KY ( v1.xA0*)
Networking
{Security}
AES Encryption Key. Set the 128-bit AES (Advanced Encryption Standard) key for
encrypting/decrypting data. The KY register cannot be read.
0 - (any 16-Byte value)
AS ( v1.x80*)
Parameter Range
Default
* Firmware version in which the command was first introduced (firmware versions are numbered in hexadecimal notation.)
© 2011 Digi Internatonal, Inc.
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
RF Interfacing
Table 3‐03.
AT
Command
XBee/XBee‐PRO Commands ‐ RF Interfacing
Command
Category
Name and Description
Parameter Range
Default
0 - 4 (XBee / XBee-PRO)
0 = -10 / 10 dBm
1 = -6 / 12 dBm
2 = -4 / 14 dBm
3 = -2 / 16 dBm
4 = 0 / 18 dBm
PL
RF Interfacing
CA (v1.x80*)
RF Interfacing
Power Level. Select/Read the power level at which the RF module transmits conducted XBee-PRO International
power.
variant:
PL=4: 10 dBm
PL=3: 8 dBm
PL=2: 2 dBm
PL=1: -3 dBm
PL=0: -3 dBm
CCA Threshold. Set/read the CCA (Clear Channel Assessment) threshold. Prior to
transmitting a packet, a CCA is performed to detect energy on the channel. If the
detected energy is above the CCA Threshold, the module will not transmit the packet.
0x24 - 0x50 [-dBm]
0x2C
(-44d dBm)
* Firmware version in which the command was first introduced (firmware versions are numbered in hexadecimal notation.)
Sleep (Low Power)
Table 3‐04.
AT
Command
SM
XBee®/XBee‐PRO® Commands ‐ Sleep (Low Power)
Command
Category
Sleep
(Low Power)
SO
Sleep (Low
Power)
ST
Sleep
(Low Power)
SP
Sleep
(Low Power)
DP (1.x80*)
Sleep
(Low Power)
Name and Description
Parameter Range
Sleep Mode. Set/Read Sleep Mode configurations.
0 - 5
0 = No Sleep
1 = Pin Hibernate
2 = Pin Doze
3 = Reserved
4 = Cyclic sleep remote
5 = Cyclic sleep remote 
w/ pin wake-up
6 = [Sleep Coordinator] for 
backwards compatibility 
w/ v1.x6 only; otherwise,
use CE command.
Sleep Options Set/Read the sleep mode options.
Bit 0 - Poll wakeup disable
0 - Normal operations. A module configured for cyclic sleep will poll for data on waking.
1 - Disable wakeup poll. A module configured for cyclic sleep will not poll for data on
waking.
Bit 1 - ADC/DIO wakeup sampling disable.
0 - Normal operations. A module configured in a sleep mode with ADC/DIO sampling
enabled will automatically perform a sampling on wakeup.
1 - Suppress sample on wakeup. A module configured in a sleep mode with ADC/DIO
sampling enabled will not automatically sample on wakeup.
Time before Sleep.  Set/Read time period of inactivity (no
serial or RF data is sent or received) before activating Sleep Mode. ST parameter is
only valid with Cyclic Sleep settings (SM = 4 - 5).
Coordinator and End Device ST values must be equal.
Also note, the GT parameter value must always be less than the ST value. (If GT > ST,
the configuration will render the module unable to enter into command mode.) If the ST
parameter is modified, also modify the GT parameter accordingly.
Cyclic Sleep Period.  Set/Read sleep period for cyclic sleeping
remotes. Coordinator and End Device SP values should always be equal. To send
Direct Messages, set SP = 0.
End Device - SP determines the sleep period for cyclic sleeping remotes. Maximum
sleep period is 268 seconds (0x68B0).
Coordinator - If non-zero, SP determines the time to hold an indirect message before
discarding it. A Coordinator will discard indirect messages after a period of (2.5 * SP).
Disassociated Cyclic Sleep Period.  
End Device - Set/Read time period of sleep for cyclic sleeping remotes that are
configured for Association but are not associated to a Coordinator. (i.e. If a device is
configured to associate, configured as a Cyclic Sleep remote, but does not find a
Coordinator, it will sleep for DP time before reattempting association.) Maximum sleep
period is 268 seconds (0x68B0). DP should be > 0 for NonBeacon systems.
© 2011 Digi Internatonal, Inc.
Default
0-4
1 - 0xFFFF [x 1 ms]
0x1388
(5000d)
0 - 0x68B0 [x 10 ms]
1 - 0x68B0 [x 10 ms]
0x3E8
(1000d)
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
* Firmware version in which the command was first introduced (firmware versions are numbered in hexadecimal notation.)
Serial Interfacing
Table 3‐05.
AT
Command
XBee‐PRO Commands ‐ Serial Interfacing
Command
Category
BD
Serial 
Interfacing
RO
Serial 
Interfacing
AP (v1.x80*)
Serial 
Interfacing
NB
Serial
Interfacing
PR (v1.x80*)
Serial 
Interfacing
Name and Description
Parameter Range
Interface Data Rate. Set/Read the serial interface data rate for communications
between the RF module serial port and host.
Request non-standard baud rates with values above 0x80 using a terminal window.
Read the BD register to find actual baud rate achieved.
0 - 7 (standard baud rates)
0 = 1200 bps
1 = 2400
2 = 4800
3 = 9600
4 = 19200
5 = 38400
6 = 57600
7 = 115200
0x80 - 0x3D090 
(non-standard baud rates up to
250 Kbps)
Packetization Timeout. Set/Read number of character times of inter-character delay
required before transmission. Set to zero to transmit characters as they arrive instead of 0 - 0xFF [x character times]
buffering them into one RF packet.
0 - 2
0 =Disabled
API Enable. Disable/Enable API Mode.
1 = API enabled
2 = API enabled (w/escaped
control characters)
0 - 4
0 = 8-bit no parity
1 = 8-bit even
Parity. Set/Read parity settings.
2 = 8-bit odd
3 = 8-bit mark
4 = 8-bit space
Pull-up Resistor Enable. Set/Read bitfield to configure internal pull-up resistor status
for I/O lines
Bitfield Map:
bit 0 - AD4/DIO4 (pin11)
bit 1 - AD3 / DIO3 (pin17)
bit 2 - AD2/DIO2 (pin18)
0 - 0xFF
bit 3 - AD1/DIO1 (pin19)
bit 4 - AD0 / DIO0 (pin20)
bit 5 - RTS / AD6 / DIO6 (pin16)
bit 6 - DTR / SLEEP_RQ / DI8 (pin9)
bit 7 - DIN/CONFIG (pin3)
Bit set to “1” specifies pull-up enabled; “0” specifies no pull-up
Default
0xFF
* Firmware version in which the command was first introduced (firmware versions are numbered in hexadecimal notation.)
I/O Settings
Table 3‐06.
XBee‐PRO Commands ‐ I/O Settings (sub‐category designated within {brackets})
AT
Command
Command
Category
Name and Description
Parameter Range
Default
D8
I/O Settings
DI8 Configuration. Select/Read options for the DI8 line (pin 9) of the RF module.
0 - 1
0 = Disabled
3 = DI 
(1,2,4 & 5 n/a)
I/O Settings
0 - 1
0 = Disabled
1 = CTS Flow Control
2 = (n/a)
DIO7 Configuration. Select/Read settings for the DIO7 line (pin 12) of the RF module.
3 = DI
Options include CTS flow control and I/O line settings.
4 = DO low
5 = DO high
6 = RS485 Tx Enable Low
7 = RS485 Tx Enable High
I/O Settings
0 - 1
0 = Disabled 
1 = RTS flow control
DIO6 Configuration. Select/Read settings for the DIO6 line (pin 16) of the RF module.
2 = (n/a)
Options include RTS flow control and I/O line settings.
3 = DI 
4 = DO low 
5 = DO high
D7 (v1.x80*)
D6 (v1.x80*)
© 2011 Digi Internatonal, Inc.
34
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Table 3‐06.
XBee‐PRO Commands ‐ I/O Settings (sub‐category designated within {brackets})
AT
Command
Command
Category
Name and Description
Parameter Range
Default
I/O Settings
DIO5 Configuration. Configure settings for the DIO5 line (pin 15) of the RF module.
Options include Associated LED indicator (blinks when associated) and I/O line
settings.
0 - 1
0 = Disabled 
1 = Associated indicator 
2 = ADC
3 = DI
4 = DO low 
5 = DO high
D0 - D4
(v1.xA0*)
I/O Settings
0 - 1
0 = Disabled 
(DIO4 -DIO4) Configuration. Select/Read settings for the following lines: AD0/DIO0
1 = (n/a) 
(pin 20), AD1/DIO1 (pin 19), AD2/DIO2 (pin 18), AD3/DIO3 (pin 17), AD4/DIO4 (pin 11). 2 = ADC 
3 = DI
Options include: Analog-to-digital converter, Digital Input and Digital Output.
4 = DO low 
5 = DO high
IU (v1.xA0*)
I/O Settings
I/O Output Enable. Disables/Enables I/O data received to be sent out UART. The data
is sent using an API frame regardless of the current AP parameter value.
0 - 1
0 = Disabled
1 = Enabled
IT (v1.xA0*)
I/O Settings
Samples before TX. Set/Read the number of samples to collect before transmitting
data. Maximum number of samples is dependent upon the number of enabled inputs.
1 - 0xFF
IS (v1.xA0*)
I/O Settings
8-bit bitmap (each bit
Force Sample. Force a read of all enabled inputs (DI or ADC). Data is returned through
represents the level of an I/O
the UART. If no inputs are defined (DI or ADC), this command will return error.
line setup as an output)
IO (v1.xA0*)
I/O Settings
Digital Output Level. Set digital output level to allow DIO lines that are setup as
outputs to be changed through Command Mode.
IC (v1.xA0*)
I/O Settings
DIO Change Detect. Set/Read bitfield values for change detect monitoring. Each bit
enables monitoring of DIO0 - DIO7 for changes. If detected, data is transmitted with
DIO data only. Any samples queued waiting for transmission will be sent first.
0 - 0xFF [bitfield]
0 (disabled)
IR (v1.xA0*)
I/O Settings
Sample Rate. Set/Read sample rate. When set, this parameter causes the module to
sample all enabled inputs at a specified interval.
0 - 0xFFFF [x 1 msec]
IA (v1.xA0*)
I/O Settings {I/O
Line Passing}
I/O Input Address. Set/Read addresses of module to which outputs are bound. Setting
all bytes to 0xFF will not allow any received I/O packet to change outputs. Setting
0 - 0xFFFFFFFFFFFFFFFF
address to 0xFFFF will allow any received I/O packet to change outputs.
0xFFFFFFF
FFFFFFFFF
T0 - T7
(v1.xA0*)
I/O Settings {I/O
Line Passing}
(D0 - D7) Output Timeout. Set/Read Output timeout values for lines that correspond
with the D0 - D7 parameters. When output is set (due to I/O line passing) to a non0 - 0xFF [x 100 ms]
default level, a timer is started which when expired will set the output to it default level.
The timer is reset when a valid I/O packet is received.
0xFF
P0
I/O Settings {I/O
Line Passing}
PWM0 Configuration. Select/Read function for PWM0 pin.
0 - 2
0 = Disabled 
1 = RSSI 
2 = PWM Output
P1 (v1.xA0*)
I/O Settings {I/O
Line Passing}
PWM1 Configuration. Select/Read function for PWM1 pin.
0 - 2
0 = Disabled 
1 = RSSI 
2 = PWM Output
M0 (v1.xA0*)
I/O Settings {I/O
Line Passing}
PWM0 Output Level. Set/Read the PWM0 output level.
0 - 0x03FF
M1 (v1.xA0*)
I/O Settings {I/O
Line Passing}
PWM1 Output Level. Set/Read the PWM1 output level.
0 - 0x03FF
PT (v1.xA0*)
I/O Settings {I/O
Line Passing}
PWM Output Timeout. Set/Read output timeout value for both PWM outputs. When
PWM is set to a non-zero value: Due to I/O line passing, a time is started which when
expired will set the PWM output to zero. The timer is reset when a valid I/O packet is
received.]
0 - 0xFF [x 100 ms]
0xFF
RP
I/O Settings {I/O
Line Passing}
RSSI PWM Timer. Set/Read PWM timer register. Set the duration of PWM (pulse width
modulation) signal output on the RSSI pin. The signal duty cycle is updated with each 0 - 0xFF [x 100 ms]
received packet and is shut off when the timer expires.]
D5 (v1.x80*)
0x28 (40d)
* Firmware version in which the command was first introduced (firmware versions are numbered in hexadecimal notation.)
Diagnostics
Table 3‐07.
XBee®/XBee‐PRO® Commands ‐ Diagnostics
AT
Command
Command
Category
Name and Description
Parameter Range
Default
VR
Diagnostics
Firmware Version. Read firmware version of the RF module.
0 - 0xFFFF [read-only]
Factory-set
Diagnostics
Firmware Version - Verbose. Read detailed version information (including application
build date, MAC, PHY and bootloader versions). The VL command has been
deprecated in version 10C9. It is not supported in firmware versions after 10C8
VL (v1.x80*)
© 2011 Digi Internatonal, Inc.
35
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Table 3‐07.
XBee®/XBee‐PRO® Commands ‐ Diagnostics
AT
Command
Command
Category
Name and Description
Parameter Range
Default
HV (v1.x80*)
Diagnostics
Hardware Version. Read hardware version of the RF module.
0 - 0xFFFF [read-only]
Factory-set
Diagnostics
Received Signal Strength. Read signal level [in dB] of last good packet received
(RSSI). Absolute value is reported. (For example: 0x58 = -88 dBm) Reported value is
accurate between -40 dBm and RX sensitivity.
0x17-0x5C (XBee)
0x24-0x64 (XBee-PRO) 
[read-only]
EC (v1.x80*)
Diagnostics
CCA Failures. Reset/Read count of CCA (Clear Channel Assessment) failures. This
parameter value increments when the module does not transmit a packet because it
detected energy above the CCA threshold level set with CA command. This count
saturates at its maximum value. Set count to “0” to reset count.
0 - 0xFFFF
EA (v1.x80*)
Diagnostics
ACK Failures. Reset/Read count of acknowledgment failures. This parameter value
increments when the module expires its transmission retries without receiving an ACK
0 - 0xFFFF
on a packet transmission. This count saturates at its maximum value. Set the parameter
to “0” to reset count.
Diagnostics
Energy Scan. Send ‘Energy Detect Scan’. ED parameter determines the length of scan
on each channel. The maximal energy on each channel is returned and each value is
followed by a carriage return. Values returned represent detected energy levels in units 0 - 6
of -dBm. Actual scan time on each channel is measured as Time = [(2 ^ SD) * 15.36]
ms. Total scan time is this time multiplied by the number of channels to be scanned.
DB
ED (v1.x80*)
* Firmware version in which the command was first introduced (firmware versions are numbered in hexadecimal notation.)
© 2011 Digi Internatonal, Inc.
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
AT Command Options
Table 3‐08.
XBee®/XBee‐PRO® Commands ‐ AT Command Options
AT
Command
Command
Category
Name and Description
Parameter Range
Default
CT
AT Command
Mode Options
Command Mode Timeout. Set/Read the period of inactivity (no valid commands
received) after which the RF module automatically exits AT Command Mode and
returns to Idle Mode.
2 - 0xFFFF [x 100 ms]
0x64 (100d)
CN
AT Command
Mode Options
Exit Command Mode. Explicitly exit the module from AT Command Mode.
--
--
AC (v1.xA0*)
AT Command
Mode Options
Apply Changes. Explicitly apply changes to queued parameter value(s) and reinitialize module.
--
--
GT
AT Command
Mode Options
Guard Times. Set required period of silence before and after the Command Sequence
Characters of the AT Command Mode Sequence (GT+ CC + GT). The period of silence 2 - 0x0CE4 [x 1 ms]
is used to prevent inadvertent entrance into AT Command Mode.
0x3E8
(1000d)
CC
AT Command
Mode Options
Command Sequence Character. Set/Read the ASCII character value to be used
between Guard Times of the AT Command Mode Sequence (GT+CC+GT). The AT
Command Mode Sequence enters the RF module into AT Command Mode.
0x2B 
(‘+’ ASCII)
0 - 0xFF
* Firmware version in which the command was first introduced (firmware versions are numbered in hexadecimal notation.)
© 2011 Digi Internatonal, Inc.
37
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Command Descriptions
Command descriptions in this section are listed alphabetically. Command categories are designated within "< >" symbols that follow each command title. XBee®/XBee-PRO® RF Modules
expect parameter values in hexadecimal (designated by the "0x" prefix).
All modules operating within the same network should contain the same firmware version.
A1 (End Device Association) Command
 The A1 command is
used to set and read association options for an
End Device.
Use the table below to determine End Device
behavior in relation to the A1 parameter.
AT Command: ATA1
Parameter Range: 0 - 0x0F [bitfield]
Default Parameter Value: 0
Related Commands: ID (PAN ID), NI (Node
Identifier), CH (Channel), CE (Coordinator
Enable), A2 (Coordinator Association)
Minimum Firmware Version Required: v1.x80
Bit number
0 - ReassignPanID
1 - ReassignChannel
End Device Association Option
0 - Will only associate with Coordinator operating on PAN ID that matches Node Identifier
1 - May associate with Coordinator operating on any PAN ID
0 - Will only associate with Coordinator operating on Channel that matches CH setting
1 - May associate with Coordinator operating on any Channel
0 - Device will not attempt Association
2 - AutoAssociate
3 - PollCoordOnPinWake
4-7
1 - Device attempts Association until success
Note: This bit is used only for Non-Beacon systems. End Devices in a Beaconing system must
always associate to a Coordinator
0 - Pin Wake will not poll the Coordinator for pending (indirect) Data
1 - Pin Wake will send Poll Request to Coordinator to extract any pending data
[reserved]
A2 (Coordinator Association) Command
 The A2 command is
used to set and read association options of the
Coordinator.
Use the table below to determine Coordinator
behavior in relation to the A2 parameter.
AT Command: ATA2
Parameter Range: 0 - 7 [bitfield]
Default Parameter Value: 0
Related Commands: ID (PAN ID), NI (Node
Identifier), CH (Channel), CE (Coordinator
Enable), A1 (End Device Association), AS
Active Scan), ED (Energy Scan)
Minimum Firmware Version Required: v1.x80
Bit number
0 - ReassignPanID
1 - ReassignChannel
End Device Association Option
0 - Coordinator will not perform Active Scan to locate available PAN ID. It will operate on ID
(PAN ID).
1 - Coordinator will perform Active Scan to determine an available ID (PAN ID). If a PAN ID
conflict is found, the ID parameter will change.
0 - Coordinator will not perform Energy Scan to determine free channel. It will operate on the
channel determined by the CH parameter.
1 - Coordinator will perform Energy Scan to find a free channel, then operate on that channel.
2 - AllowAssociate
3-7
0 - Coordinator will not allow any devices to associate to it.
1 - Coordinator will allow devices to associate to it.
[reserved]
The binary equivalent of the default value (0x06) is 00000110. ‘Bit 0’ is the last digit of the sequence.
© 2011 Digi Internatonal, Inc.
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
AC (Apply Changes) Command
 The AC command
AT Command: ATAC
is used to explicitly apply changes to module
Minimum Firmware Version Required: v1.xA0
parameter values. ‘Applying changes’ means that
the module is re-initialized based on changes
made to its parameter values. Once changes are applied, the module immediately operates
according to the new parameter values.
This behavior is in contrast to issuing the WR (Write) command. The WR command saves parameter values to non-volatile memory, but the module still operates according to previously saved values until the module is re-booted or the CN (Exit AT Command Mode) command is issued.
Refer to the “AT Command - Queue Parameter Value” API type for more information.
AI (Association Indication) Command
 The AI command is
used to indicate occurrences of errors during the
last association request.
Use the table below to determine meaning of the
returned values.
AT Command: ATAI
Parameter Range: 0 - 0x13 [read-only]
Related Commands: AS (Active Scan), ID (PAN
ID), CH (Channel), ED (Energy Scan), A1 (End
Device Association), A2 (Coordinator
Association), CE (Coordinator Enable)
Minimum Firmware Version Required: v1.x80
Returned Value (Hex)
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0xFF
Association Indication
Successful Completion - Coordinator successfully started or End Device association complete
Active Scan Timeout
Active Scan found no PANs
Active Scan found PAN, but the Coordinator Allow Association bit is not set
Active Scan found PAN, but Coordinator and End Device are not configured to support beacons
Active Scan found PAN, but Coordinator ID (PAN ID) value does not match the ID of the End Device
Active Scan found PAN, but Coordinator CH (Channel) value does not match the CH of the End Device
Energy Scan Timeout
Coordinator start request failed
Coordinator could not start due to Invalid Parameter
Coordinator Realignment is in progress
Association Request not sent
Association Request timed out - no reply was received
Association Request had an Invalid Parameter
Association Request Channel Access Failure - Request was not transmitted - CCA failure
Remote Coordinator did not send an ACK after Association Request was sent
Remote Coordinator did not reply to the Association Request, but an ACK was received 
after sending the request
[reserved]
Sync-Loss - Lost synchronization with a Beaconing Coordinator
Disassociated - No longer associated to Coordinator
RF Module is attempting to associate
© 2011 Digi Internatonal, Inc.
39
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
AP (API Enable) Command
 The AP command is used to
enable the RF module to operate using a framebased API instead of using the default Transparent (UART) mode.
AT Command: ATAP
Parameter Range:0 - 2
Parameter
Configuration
Disabled
(Transparent operation)
API enabled
API enabled
(with escaped characters)
Default Parameter Value:0
Minimum Firmware Version Required: v1.x80
Refer to the API Operation section when API operation is enabled (AP = 1 or 2).
AS (Active Scan) Command
 The AS command is
used to send a Beacon Request to a Broadcast
(0xFFFF) and Broadcast PAN (0xFFFF) on every
channel. The parameter determines the amount
of time the RF module will listen for Beacons on
each channel. A ‘PanDescriptor’ is created and
returned for every Beacon received from the
scan. Each PanDescriptor contains the following
information:
AT Command: ATAS
Parameter Range: 0 - 6
Related Command: SD (Scan Duration), DL
(Destination Low Address), DH (Destination
High Address), ID (PAN ID), CH (Channel)
Minimum Firmware Version Required: v1.x80
CoordAddress (SH + SL parameters) (NOTE: If MY on the coordinator is set less than
0xFFFF, the MY value is displayed)
CoordPanID (ID parameter)
CoordAddrMode 
0x02 = 16-bit Short Address 
0x03 = 64-bit Long Address 
Channel (CH parameter)  
SecurityUse 
ACLEntry 
SecurityFailure 
SuperFrameSpec (2 bytes):
bit 15 - Association Permitted (MSB) 
bit 14 - PAN Coordinator 
bit 13 - Reserved 
bit 12 - Battery Life Extension
bits 8-11 - Final CAP Slot 
bits 4-7 - Superframe Order 
bits 0-3 - Beacon Order 
GtsPermit 
RSSI (- RSSI is returned as -dBm) 
TimeStamp (3 bytes) 
 (A carriage return  is sent at the end of the AS command.
The Active Scan is capable of returning up to 5 PanDescriptors in a scan. The actual scan time on
each channel is measured as Time = [(2 ^ (SD Parameter)) * 15.36] ms. Total scan time is this
time multiplied by the number of channels to be scanned (16 for the XBee, 12 for the XBee-PRO).
© 2011 Digi Internatonal, Inc.
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
NOTE: Refer the scan table in the SD description to determine scan times. If using API Mode, no
’s are returned in the response. Refer to the API Mode Operation section.
BD (Interface Data Rate) Command
 The BD command is used to
set and read the serial interface data rate used
between the RF module and host. This parameter
determines the rate at which serial data is sent to
the module from the host. Modified interface data
rates do not take effect until the CN (Exit AT Command Mode) command is issued and the system
returns the 'OK' response.
AT Command: ATBD
Parameter Range:0 - 7 (standard rates)
0x80-0x3D090 (non-standard rates up to
250 Kbps)
Parameter
Configuration (bps)
1200
2400
When parameters 0-7 are sent to the module, the
respective interface data rates are used (as
shown in the table on the right).
4800
9600
The RF data rate is not affected by the BD parameter. If the interface data rate is set higher than
the RF data rate, a flow control configuration may
need to be implemented.
19200
38400
57600
115200
Default Parameter Value:3
Non-standard Interface Data Rates: 
Any value above 0x07 will be interpreted as an actual baud rate. When a value above 0x07 is sent,
the closest interface data rate represented by the number is stored in the BD register. For example, a rate of 19200 bps can be set by sending the following command line "ATBD4B00". NOTE:
When using Digi’s X-CTU Software, non-standard interface data rates can only be set and read
using the X-CTU ‘Terminal’ tab. Non-standard rates are not accessible through the ‘Modem Configuration’ tab.
When the BD command is sent with a non-standard interface data rate, the UART will adjust to
accommodate the requested interface rate. In most cases, the clock resolution will cause the
stored BD parameter to vary from the parameter that was sent (refer to the table below). Reading
the BD command (send "ATBD" command without an associated parameter value) will return the
value actually stored in the module’s BD register.
Parameters Sent Versus Parameters Stored
BD Parameter Sent (HEX)
Interface Data Rate (bps)
1200
BD Parameter Stored (HEX)
19,200
115,200*
12C
300
12B
1C200
115,200
1B207
* The 115,200 baud rate setting is actually at 111,111 baud (-3.5% target UART speed).
CA (CCA Threshold) Command
 CA command is used to set and
read CCA (Clear Channel Assessment) thresholds.
Prior to transmitting a packet, a CCA is performed
to detect energy on the transmit channel. If the
detected energy is above the CCA Threshold, the
RF module will not transmit the packet.
© 2011 Digi Internatonal, Inc.
AT Command: ATCA
Parameter Range: 0 - 0x50 [-dBm]
Default Parameter Value: 0x2C 
(-44 decimal dBm)
Minimum Firmware Version Required: v1.x80
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CC (Command Sequence Character) Command
 The CC command
is used to set and read the ASCII character used
between guard times of the AT Command Mode
Sequence (GT + CC + GT). This sequence enters
the RF module into AT Command Mode so that
data entering the module from the host is recognized as commands instead of payload.
AT Command: ATCC
Parameter Range: 0 - 0xFF
Default Parameter Value: 0x2B (ASCII “+”)
Related Command: GT (Guard Times)
The AT Command Sequence is explained further in the AT Command Mode section.
CE (Coordinator Enable) Command
 The CH command is
used to set/read the operating channel on which
RF connections are made between RF modules.
The channel is one of three addressing options
available to the module. The other options are the
PAN ID (ID command) and destination addresses
(DL & DH commands).
AT Command: ATCH
Parameter Range: 0x0B - 0x1A (XBee)
0x0C - 0x17 (XBee-PRO)
Default Parameter Value: 0x0C (12 decimal)
Related Commands: ID (PAN ID), DL
(Destination Address Low, DH (Destination
Address High)
In order for modules to communicate with each
other, the modules must share the same channel number. Different channels can be used to prevent modules in one network from listening to transmissions of another. Adjacent channel rejection is 23 dB.
The module uses channel numbers of the 802.15.4 standard.
Center Frequency = 2.405 + (CH - 11d) * 5 MHz
(d = decimal)
Refer to the XBee/XBee-PRO Addressing section for more information.
CN (Exit Command Mode) Command
 The CN command
is used to explicitly exit the RF module from AT
Command Mode.
AT Command: ATCN
CT (Command Mode Timeout) Command
 The CT command
is used to set and read the amount of inactive
time that elapses before the RF module automatically exits from AT Command Mode and returns to
Idle Mode.
Use the CN (Exit Command Mode) command to
exit AT Command Mode manually.
© 2011 Digi Internatonal, Inc.
AT Command: ATCT
Parameter Range:2 - 0xFFFF
[x 100 milliseconds]
Default Parameter Value: 0x64 (100 decimal
(which equals 10 decimal seconds))
Number of bytes returned: 2
Related Command: CN (Exit Command Mode)
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D0 - D4 (DIOn Configuration) Commands
 The D0, D1, D2, D3 and D4 commands are used to select/read the behavior of
their respective AD/DIO lines (pins 20, 19, 18, 17
and 11 respectively).
Options include:
• Analog-to-digital converter
• Digital input
• Digital output
AT Commands: 
ATD0, ATD1, ATD2, ATD3, ATD4
Parameter Range:0 - 5
Parameter
Configuration
Disabled
n/a
ADC
DI
DO low
DO high
Default Parameter Value:0
Minimum Firmware Version Required: 1.x.A0
D5 (DIO5 Configuration) Command
 The D5 command is used to
select/read the behavior of the DIO5 line (pin 15).
Options include:
• Associated Indicator (LED blinks when the
module is associated)
AT Command: ATD5
Parameter Range:0 - 5
Parameter
Configuration
Disabled
• Analog-to-digital converter
Associated Indicator
• Digital input
ADC
• Digital output
DI
DO low
DO high
Default Parameter Value:1
Parameters 2-5 supported as of firmware
version 1.xA0
D6 (DIO6 Configuration) Command
 The D6 command is used to
select/read the behavior of the DIO6 line (pin 16).
Options include:
• RTS flow control
AT Command: ATD6
Parameter Range:0 - 5
Parameter
Configuration
Disabled
• Digital input
RTS Flow Control
• Digital output
n/a
DI
• Analog-to-digital converter
DO low
DO high
Default Parameter Value:0
Parameters 3-5 supported as of firmware
version 1.xA0
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D7 (DIO7 Configuration) Command
 The D7 command is used to
select/read the behavior of the DIO7 line (pin 12).
Options include:
AT Command: ATD7
Parameter Range:0 - 5
Parameter
Configuration
Disabled
• Digital input
CTS Flow Control
• Digital output
n/a
• RS485 TX Enable (this output is 3V CMOS
level, and is useful in a 3V CMOS to RS485
conversion circuit)
DI
DO low
• CTS flow control
• Analog-to-digital converter
DO high
RS485 TX Enable Low
RS485 TX Enable High
Default Parameter Value:1
Parameters 3-7 supported as of firmware
version 1.x.A0
D8 (DI8 Configuration) Command
 The D8 command is used to
select/read the behavior of the DI8 line (pin 9).
This command enables configuring the pin to
function as a digital input. This line is also used
with Pin Sleep.
AT Command: ATD8
Parameter Range:0 - 5 
(1, 2, 4 & 5 n/a)
Parameter
Configuration
Disabled
DI
Default Parameter Value:0
Minimum Firmware Version Required: 1.xA0
DA (Force Disassociation) Command
<(Special)> The DA command is used to immediately disassociate an End Device from a Coordinator and reattempt to associate.
AT Command: ATDA
Minimum Firmware Version Required: v1.x80
DB (Received Signal Strength) Command
 DB parameter is used to read the
received signal strength (in dBm) of the last RF
packet received. Reported values are accurate
between -40 dBm and the RF module's receiver
sensitivity.
AT Command: ATDB
Parameter Range [read-only]: 
0x17-0x5C (XBee), 0x24-0x64 (XBee-PRO)
Absolute values are reported. For example: 0x58 = -88 dBm (decimal). If no packets have been
received (since last reset, power cycle or sleep event), “0” will be reported.
DH (Destination Address High) Command
 The DH command is
used to set and read the upper 32 bits of the RF
module's 64-bit destination address. When combined with the DL (Destination Address Low)
parameter, it defines the destination address used
for transmission.
AT Command: ATDH
Parameter Range: 0 - 0xFFFFFFFF
Default Parameter Value: 0
Related Commands: DL (Destination Address
Low), CH (Channel), ID (PAN VID), MY (Source
Address)
An module will only communicate with other
modules having the same channel (CH parameter), PAN ID (ID parameter) and destination address
(DH + DL parameters).
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To transmit using a 16-bit address, set the DH parameter to zero and the DL parameter less than
0xFFFF. 0x000000000000FFFF (DL concatenated to DH) is the broadcast address for the PAN.
Refer to the XBee/XBee-PRO Addressing section for more information.
DL (Destination Address Low) Command
 The DL command is
used to set and read the lower 32 bits of the RF
module's 64-bit destination address. When combined with the DH (Destination Address High)
parameter, it defines the destination address used
for transmission.
AT Command: ATDL
Parameter Range: 0 - 0xFFFFFFFF
Default Parameter Value: 0
Related Commands: DH (Destination Address
High), CH (Channel), ID (PAN VID), MY (Source
Address)
A module will only communicate with other modules having the same channel (CH parameter),
PAN ID (ID parameter) and destination address (DH + DL parameters).
To transmit using a 16-bit address, set the DH parameter to zero and the DL parameter less than
0xFFFF. 0x000000000000FFFF (DL concatenated to DH) is the broadcast address for the PAN.
Refer to the XBee/XBee-PRO Addressing section for more information.
DN (Destination Node) Command
 The DN command
is used to resolve a NI (Node Identifier) string to
a physical address. The following events occur
upon successful command execution:
AT Command: ATDN
Parameter Range: 20-character ASCII String
Minimum Firmware Version Required: v1.x80
1. DL and DH are set to the address of the
module with the matching NI (Node Identifier).
2. ‘OK’ is returned.
3. RF module automatically exits AT Command Mode.
If there is no response from a modem within 200 msec or a parameter is not specified (left blank),
the command is terminated and an ‘ERROR’ message is returned.
DP (Disassociation Cyclic Sleep Period) Command

NonBeacon Firmware
AT Command: ATDP
Parameter Range: 1 - 0x68B0 
[x 10 milliseconds]
End Device - The DP command is used to set and
read the time period of sleep for cyclic sleeping
Default Parameter Value:0x3E8
remotes that are configured for Association but
(1000 decimal)
are not associated to a Coordinator. (i.e. If a
Related Commands: SM (Sleep Mode), SP
device is configured to associate, configured as a (Cyclic Sleep Period), ST (Time before Sleep)
Cyclic Sleep remote, but does not find a CoordiMinimum Firmware Version Required: v1.x80
nator; it will sleep for DP time before reattempting association.) Maximum sleep period is 268
seconds (0x68B0). DP should be > 0 for NonBeacon systems.
EA (ACK Failures) Command
 The EA command is used to reset
and read the count of ACK (acknowledgement)
failures. This parameter value increments when
the module expires its transmission retries without receiving an ACK on a packet transmission.
This count saturates at its maximum value.
AT Command: ATEA
Parameter Range:0 - 0xFFFF
Minimum Firmware Version Required: v1.x80
Set the parameter to “0” to reset count.
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EC (CCA Failures) Command
 The EC command is used to read
and reset the count of CCA (Clear Channel
Assessment) failures. This parameter value increments when the RF module does not transmit a
packet due to the detection of energy that is
above the CCA threshold level (set with CA command). This count saturates at its maximum value.
AT Command: ATEC
Parameter Range:0 - 0xFFFF
Related Command: CA (CCA Threshold)
Minimum Firmware Version Required: v1.x80
Set the EC parameter to “0” to reset count.
ED (Energy Scan) Command
 The ED command is
used to send an “Energy Detect Scan”. This
parameter determines the length of scan on each
channel. The maximal energy on each channel is
returned and each value is followed by a carriage
return. An additional carriage return is sent at the
end of the command.
AT Command: ATED
Parameter Range:0 - 6
Related Command: SD (Scan Duration), SC
(Scan Channel)
Minimum Firmware Version Required: v1.x80
The values returned represent the detected energy level in units of -dBm. The actual scan time on
each channel is measured as Time = [(2 ^ ED PARAM) * 15.36] ms.
Note: Total scan time is this time multiplied by the number of channels to be scanned. Also refer to
the SD (Scan Duration) table. Use the SC (Scan Channel) command to choose which channels to scan.
EE (AES Encryption Enable) Command
 The EE command is
used to set/read the parameter that disables/
enables 128-bit AES encryption.
The XBee®/XBee-PRO® firmware uses the
802.15.4 Default Security protocol and uses AES
encryption with a 128-bit key. AES encryption dictates that all modules in the network use the
same key and the maximum RF packet size is 95
Bytes.
AT Command: ATEE
Parameter Range:0 - 1
Parameter
Configuration
Disabled
Enabled
Default Parameter Value:0
Related Commands: KY (Encryption Key), AP
(API Enable), MM (MAC Mode)
When encryption is enabled, the module will
Minimum Firmware Version Required: v1.xA0
always use its 64-bit long address as the source
address for RF packets. This does not affect how the MY (Source Address), DH (Destination
Address High) and DL (Destination Address Low) parameters work
If MM (MAC Mode) > 0 and AP (API Enable) parameter > 0: 
With encryption enabled and a 16-bit short address set, receiving modules will only be able to
issue RX (Receive) 64-bit indicators. This is not an issue when MM = 0.
If a module with a non-matching key detects RF data, but has an incorrect key: When encryption is
enabled, non-encrypted RF packets received will be rejected and will not be sent out the UART.
Transparent Operation --> All RF packets are sent encrypted if the key is set.
API Operation --> Receive frames use an option bit to indicate that the packet was encrypted.
FP (Force Poll) Command
 The FP command is
used to request indirect messages being held by
a Coordinator.
© 2011 Digi Internatonal, Inc.
AT Command: ATFP
Minimum Firmware Version Required: v1.x80
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
FR (Software Reset) Command
 The FR command is used to force a
software reset on the RF module. The reset simulates powering off and then on again the module.
AT Command: ATFR
Minimum Firmware Version Required: v1.x80
GT (Guard Times) Command
 GT Command is
used to set the DI (data in from host) time-ofsilence that surrounds the AT command sequence
character (CC Command) of the AT Command
Mode sequence (GT + CC + GT).
The DI time-of-silence is used to prevent inadvertent entrance into AT Command Mode.
AT Command: ATGT
Parameter Range:2 - 0x0CE4
[x 1 millisecond]
Default Parameter Value:0x3E8 
(1000 decimal)
Related Command: CC (Command Sequence
Character)
Refer to the Command Mode section for more
information regarding the AT Command Mode Sequence.
HV (Hardware Version) Command
 The HV command is used to read
the hardware version of the RF module.
AT Command: ATHV
Parameter Range:0 - 0xFFFF [Read-only]
Minimum Firmware Version Required: v1.x80
IA (I/O Input Address) Command
 The IA command is used to bind a module output to a specific address. Outputs will only change if received
from this address. The IA command can be used
to set/read both 16 and 64-bit addresses.
Setting all bytes to 0xFF will not allow the reception of any I/O packet to change outputs. Setting
the IA address to 0xFFFF will cause the module to
accept all I/O packets.
AT Command: ATIA
Parameter Range:0 - 0xFFFFFFFFFFFFFFFF
Default Parameter Value:0xFFFFFFFFFFFFFFFF
(will not allow any received I/O packet to
change outputs)
Minimum Firmware Version Required: v1.xA0
IC (DIO Change Detect) Command
 Set/Read bitfield values for
change detect monitoring. Each bit enables monitoring of DIO0 - DIO7 for changes.
If detected, data is transmitted with DIO data
only. Any samples queued waiting for transmission will be sent first.
AT Command: ATIC
Parameter Range:0 - 0xFF [bitfield]
Default Parameter Value:0 (disabled)
Minimum Firmware Version Required: 1.xA0
Refer to the “ADC and Digital I/O Line Support” sections of the “RF Module Operations” chapter for
more information.
ID (Pan ID) Command
 The ID command is
used to set and read the PAN (Personal Area Network) ID of the RF module. Only modules with
matching PAN IDs can communicate with each
other. Unique PAN IDs enable control of which RF
packets are received by a module.
AT Command: ATID
Parameter Range: 0 - 0xFFFF
Default Parameter Value:0x3332
(13106 decimal)
Setting the ID parameter to 0xFFFF indicates a global transmission for all PANs. It does not indicate a global receive.
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IO (Digital Output Level) Command
 The IO command is used to set
digital output levels. This allows DIO lines setup
as outputs to be changed through Command
Mode.
AT Command: ATIO
Parameter Range: 8-bit bitmap 
(where each bit represents the level of an I/O
line that is setup as an output.)
Minimum Firmware Version Required: v1.xA0
IR (Sample Rate) Command
 The IR command is used to set/
read the sample rate. When set, the module will
sample all enabled DIO/ADC lines at a specified
interval. This command allows periodic reads of
the ADC and DIO lines in a non-Sleep Mode
setup. A sample rate which requires transmissions at a rate greater than once every 20ms is
not recommended.
AT Command: ATIR
Parameter Range: 0 - 0xFFFF [x 1 msec]
(cannot guarantee 1 ms timing when IT=1)
Default Parameter Value:0
Related Command: IT (Samples before TX)
Minimum Firmware Version Required: v1.xA0
Example: When IR = 0x14, the sample rate is 20 ms (or 50 Hz).
IS (Force Sample) Command
 The IS command is used to force
a read of all enabled DIO/ADC lines. The data is
returned through the UART.
AT Command: ATIS
Minimum Firmware Version Required: v1.xA0
When operating in Transparent Mode (AP=0), the
data is retuned in the following format:
All bytes are converted to ASCII:
number of samples
channel mask
DIO data (If DIO lines are enabled
ADC channel Data <-This will repeat for every enabled ADC channel
 (end of data noted by extra )
When operating in API mode (AP > 0), the command will immediately return an ‘OK’ response.
The data will follow in the normal API format for DIO data.
IT (Samples before TX) Command
 The IT command is used to set/
read the number of DIO and ADC samples to collect before transmitting data.
AT Command: ATIT
Parameter Range: 1 - 0xFF
Default Parameter Value:1
One ADC sample is considered complete when all
Minimum Firmware Version Required: v1.xA0
enabled ADC channels have been read. The module can buffer up to 93 Bytes of sample data.
Since the module uses a 10-bit A/D converter, each sample uses two Bytes. This leads to a maximum buffer size of 46 samples or IT=0x2E.
When Sleep Modes are enabled and IR (Sample Rate) is set, the module will remain awake until IT
samples have been collected.
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IU (I/O Output Enable) Command
 The IU command is used to disable/enable I/O UART output. When enabled (IU
= 1), received I/O line data packets are sent out
the UART. The data is sent using an API frame
regardless of the current AP parameter value.
AT Command: ATIU
Parameter Range:0 - 1
Parameter
Configuration
Disabled Received I/O line data
packets will be NOT
sent out UART.
Enabled Received I/O line data
will be sent out UART
Default Parameter Value:1
Minimum Firmware Version Required: 1.xA0
KY (AES Encryption Key) Command
 The KY command is
used to set the 128-bit AES (Advanced Encryption
Standard) key for encrypting/decrypting data.
Once set, the key cannot be read out of the module by any means.
AT Command: ATKY
Parameter Range:0 - (any 16-Byte value)
Default Parameter Value:0
Related Command: EE (Encryption Enable)
Minimum Firmware Version Required: v1.xA0
The entire payload of the packet is encrypted
using the key and the CRC is computed across the
ciphertext. When encryption is enabled, each packet carries an additional 16 Bytes to convey the
random CBC Initialization Vector (IV) to the receiver(s). The KY value may be “0” or any 128-bit
value. Any other value, including entering KY by itself with no parameters, is invalid. All ATKY
entries (valid or not) are received with a returned 'OK'.
A module with the wrong key (or no key) will receive encrypted data, but the data driven out the
serial port will be meaningless. A module with a key and encryption enabled will receive data sent
from a module without a key and the correct unencrypted data output will be sent out the serial
port. Because CBC mode is utilized, repetitive data appears differently in different transmissions
due to the randomly-generated IV.
When queried, the system will return an ‘OK’ message and the value of the key will not be
returned.
M0 (PWM0 Output Level) Command
 The M0 command is used to set
the output level of the PWM0 line (pin 6).
Before setting the line as an output:
1. Enable PWM0 output (P0 = 2) 
2. Apply settings (use CN or AC)
The PWM period is 64 µsec and there are 0x03FF
(1023 decimal) steps within this period. When M0
= 0 (0% PWM), 0x01FF (50% PWM), 0x03FF
(100% PWM), etc.
AT Command: ATM0
Parameter Range:0 - 0x03FF [steps]
Default Parameter Value:0
Related Commands: P0 (PWM0 Enable), AC
(Apply Changes), CN (Exit Command Mode)
Minimum Firmware Version Required: v1.xA0
M1 (PWM1 Output Level) Command
 The M1 command is used to set
the output level of the PWM1 line (pin 7).
Before setting the line as an output:
1. Enable PWM1 output (P1 = 2) 
2. Apply settings (use CN or AC)
AT Command: ATM1
Parameter Range:0 - 0x03FF
Default Parameter Value:0
Related Commands: P1 (PWM1 Enable), AC
(Apply Changes), CN (Exit Command Mode)
Minimum Firmware Version Required: v1.xA0
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
MM (MAC Mode) Command
 The MM command is
used to set and read the MAC Mode value. The
MM command disables/enables the use of a Digi
header contained in the 802.15.4 RF packet. By
default (MM = 0), Digi Mode is enabled and the
module adds an extra header to the data portion
of the 802.15.4 packet. This enables the following
features:
AT Command: ATMM
Parameter Range:0 - 3
Parameter
Configuration
Digi Mode (802.15.4 +
Digi header)
802.15.4 (no ACKs)
802.15.4 (with ACKs)
Digi Mode (no ACKs)
• ND and DN command support
• Duplicate packet detection when using ACKs
• "RR command
• "DIO/AIO sampling support
Default Parameter Value:0
Related Commands: ND (Node Discover), DN
(Destination Node)
The MM command allows users to turn off the use
Minimum Firmware Version Required: v1.x80
of the extra header. Modes 1 and 2 are strict
802.15.4 modes. If the Digi header is disabled, ND and DN parameters are also disabled.
Note: When MM=0 or 3, application and CCA failure retries are not supported.
MY (16-bit Source Address) Command
 The MY command is
used to set and read the 16-bit source address of
the RF module.
By setting MY to 0xFFFF, the reception of RF packets having a 16-bit address is disabled. The 64-bit
address is the module’s serial number and is
always enabled.
AT Command: ATMY
Parameter Range: 0 - 0xFFFF
Default Parameter Value: 0
Related Commands: DH (Destination Address
High), DL (Destination Address Low), CH
(Channel), ID (PAN ID)
NB (Parity) Command
 The NB command is used to
select/read the parity settings of the RF module
for UART communications.
Note: the module does not actually calculate and
check the parity; it only interfaces with devices at
the configured parity and stop bit settings.
AT Command: ATNB
Parameter Range: 0 - 4
Parameter
Configuration
8-bit no parity
8-bit even
8-bit odd
8-bit mark
8-bit space
Default Parameter Value: 0
Number of bytes returned: 1
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ND (Node Discover) Command
 The ND command
is used to discover and report all modules on its
current operating channel (CH parameter) and
PAN ID (ID parameter). ND also accepts an NI
(Node Identifier) value as a parameter. In this
case, only a module matching the supplied identifier will respond.
AT Command: ATND
Range: optional 20-character NI value
Related Commands: CH (Channel), ID (Pan ID),
MY (Source Address), SH (Serial Number High),
SL (Serial Number Low), NI (Node Identifier),
NT (Node Discover Time)
Minimum Firmware Version Required: v1.x80
ND uses a 64-bit long address when sending and
responding to an ND request. The ND command causes a module to transmit a globally addressed
ND command packet. The amount of time allowed for responses is determined by the NT (Node
Discover Time) parameter.
In AT Command mode, command completion is designated by a carriage return (0x0D). Since two
carriage returns end a command response, the application will receive three carriage returns at
the end of the command. If no responses are received, the application should only receive one
carriage return. When in API mode, the application should receive a frame (with no data) and status (set to ‘OK’) at the end of the command. When the ND command packet is received, the
remote sets up a random time delay (up to 2.2 sec) before replying as follows:
Node Discover Response (AT command mode format - Transparent operation):
MY (Source Address) value
SH (Serial Number High) value
SL (Serial Number Low) value
DB (Received Signal Strength) value
NI (Node Identifier) value
 (This is part of the response and not the end of command indicator.)
Node Discover Response (API format - data is binary (except for NI)):
2 bytes for MY (Source Address) value
4 bytes for SH (Serial Number High) value
4 bytes for SL (Serial Number Low) value
1 byte for DB (Received Signal Strength) value
NULL-terminated string for NI (Node Identifier) value (max 20 bytes w/out NULL terminator)
NI (Node Identifier) Command
 The NI command
is used to set and read a string for identifying a
particular node.
Rules:
• Register only accepts printable ASCII data.
• A string can not start with a space.
AT Command: ATNI
Parameter Range: 20-character ASCII string
Related Commands: ND (Node Discover), DN
(Destination Node)
Minimum Firmware Version Required: v1.x80
• A carriage return ends command
• Command will automatically end when maximum bytes for the string have been entered.
This string is returned as part of the ND (Node Discover) command. This identifier is also used
with the DN (Destination Node) command.
NO (Node Discover Options) Command
 The NO command
is used to suppress/include a self-response to
Node Discover commands. When NO=1 a module
doing a Node Discover will include a response
entry for itself.
AT Command: ATNO
Parameter Range: "0-1
Related Commands: ND (Node Discover), DN
(Destination Node)
Minimum Firmware Version Required: v1.xC5
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NT (Node Discover Time) Command
 The NT command
is used to set the amount of time a base node will
wait for responses from other nodes when using
the ND (Node Discover) command. The NT value
is transmitted with the ND command.
AT Command: ATNT
Parameter Range: 0x01 - 0xFC
[x 100 msec]
Default: 0x19 (2.5 decimal seconds)
Related Commands: ND (Node Discover)
Remote nodes will set up a random hold-off time
Minimum Firmware Version Required: 1.xA0
based on this time. The remotes will adjust this
time down by 250 ms to give each node the ability to respond before the base ends the command. Once the ND command has ended, any
response received on the base will be discarded.
P0 (PWM0 Configuration) Command
 The P0 command is used to select/read the function for
PWM0 (Pulse Width Modulation output 0). This
command enables the option of translating
incoming data to a PWM so that the output can be
translated back into analog form.
AT Command: ATP0
The second character in the command is the
number zero (“0”), not the letter “O”.
Parameter Range: 0 - 2
Parameter
Configuration
Disabled
With the IA (I/O Input Address) parameter correctly set, AD0 values can automatically be
passed to PWM0.
RSSI
PWM0 Output
Default Parameter Value: 1
P1 (PWM1 Configuration) Command
 The P1 command is used to select/read the function for
PWM1 (Pulse Width Modulation output 1). This
command enables the option of translating
incoming data to a PWM so that the output can be
translated back into analog form.
With the IA (I/O Input Address) parameter correctly set, AD1 values can automatically be
passed to PWM1.
AT Command: ATP1
Parameter Range: 0 - 2
Parameter
Configuration
Disabled
RSSI
PWM1 Output
Default Parameter Value: 0
Minimum Firmware Version Required: v1.xA0
PL (Power Level) Command
 The PL command is used to select and read
the power level at which the RF
module transmits conducted
power.
When operating in Europe,
XBee-PRO 802.15.4 modules
must operate at or below a
transmit power output level of
10dBm. Customers have 2
choices for transmitting at or
below 10dBm:
AT Command: ATPL
Parameter Range: 0 - 4
XBee-PRO
XBee-PRO
Japan variant
-10 dBm
10 dBm
PL=4: 10 dBm
-6 dBm
12 dBm
PL=3: 8 dBm
Parameter
XBee
-4 dBm
14 dBm
PL=2: 2 dBm
-2 dBm
16 dBm
PL=1: -3 dBm
0 dBm
18 dBm
PL=0: -3 dBm
Default Parameter Value: 4
• Order the standard XBeePRO module and change
the PL command to "0"
(10dBm),
• Order the Japan variant of the XBee-PRO module, which has a maximum transmit output
power of 10dBm.
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PR (Pull-up Resistor) Command
 The PR command is used to
set and read the bit field that is used to configure
internal the pull-up resistor status for I/O lines. “1”
AT Command: ATPR
Parameter Range: 0 - 0xFF
specifies the pull-up resistor is enabled. “0” speci-
Default Parameter Value: 0xFF 
(all pull-up resistors are enabled)
fies no pull up.
Minimum Firmware Version Required: v1.x80
bit
bit
bit
bit
bit
bit
bit
bit
AD4/DIO4 (pin 11)
AD3/DIO3 (pin 17) 
AD2/DIO2 (pin 18)
AD1/DIO1 (pin 19)
AD0/DIO0 (pin 20)
AD6/DIO6 (pin 16)
DI8 (pin 9) 
DIN/CONFIG (pin 3)
For example: Sending the command “ATPR 6F” will turn bits 0, 1, 2, 3, 5 and 6 ON; and bits 4 & 7
will be turned OFF. (The binary equivalent of “0x6F” is “01101111”. Note that ‘bit 0’ is the last digit
in the bitfield.
PT (PWM Output Timeout) Command
 The PT command is used to set/read the output timeout
value for both PWM outputs.
When PWM is set to a non-zero value: Due to I/O
line passing, a time is started which when expired
will set the PWM output to zero. The timer is reset
when a valid I/O packet is received.
AT Command: ATPT
Parameter Range: 0 - 0xFF [x 100 msec]
Default Parameter Value: 0xFF
Minimum Firmware Version Required: 1.xA0
RE (Restore Defaults) Command
<(Special)> The RE command is used to restore
AT Command: ATRE
all configurable parameters to their factory
default settings. The RE command does not write
restored values to non-volatile (persistent) memory. Issue the WR (Write) command subsequent
to issuing the RE command to save restored parameter values to non-volatile memory.
RN (Random Delay Slots) Command
 The RN command is
used to set and read the minimum value of the
back-off exponent in the CSMA-CA algorithm. The
CSMA-CA algorithm was engineered for collision
avoidance (random delays are inserted to prevent
data loss caused by data collisions).
AT Command: ATRN
Parameter Range: 0 - 3 [exponent]
Default Parameter Value: 0
If RN = 0, collision avoidance is disabled during the first iteration of the algorithm (802.15.4 macMinBE).
CSMA-CA stands for "Carrier Sense Multiple Access - Collision Avoidance". Unlike CSMA-CD (reacts
to network transmissions after collisions have been detected), CSMA-CA acts to prevent data collisions before they occur. As soon as a module receives a packet that is to be transmitted, it checks
if the channel is clear (no other module is transmitting). If the channel is clear, the packet is sent
over-the-air. If the channel is not clear, the module waits for a randomly selected period of time,
then checks again to see if the channel is clear. After a time, the process ends and the data is lost.
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RO (Packetization Timeout) Command
 RO command is used to set
and read the number of character times of intercharacter delay required before transmission.
AT Command: ATRO
Parameter Range:0 - 0xFF
[x character times]
RF transmission commences when data is
Default Parameter Value: 3
detected in the DI (data in from host) buffer and
RO character times of silence are detected on the
UART receive lines (after receiving at least 1 byte).
RF transmission will also commence after 100 Bytes (maximum packet size) are received in the DI
buffer.
Set the RO parameter to '0' to transmit characters as they arrive instead of buffering them into
one RF packet.
RP (RSSI PWM Timer) Command
 The RP comAT Command: ATRP
mand is used to enable PWM (Pulse Width ModuParameter Range:0 - 0xFF
lation) output on the RF module. The output is
[x 100 msec]
calibrated to show the level a received RF signal is
Default Parameter Value: 0x28 (40 decimal)
above the sensitivity level of the module. The
PWM pulses vary from 24 to 100%. Zero percent
means PWM output is inactive. One to 24% percent means the received RF signal is at or below
the published sensitivity level of the module. The following table shows levels above sensitivity
and PWM values.
The total period of the PWM output is 64 µs. Because there are 445 steps in the PWM output, the
minimum step size is 144 ns.
PWM Percentages
dB above Sensitivity
PWM percentage
(high period / total period)
10
41%
20
58%
30
75%
A non-zero value defines the time that the PWM output will be active with the RSSI value of the
last received RF packet. After the set time when no RF packets are received, the PWM output will
be set low (0 percent PWM) until another RF packet is received. The PWM output will also be set
low at power-up until the first RF packet is received. A parameter value of 0xFF permanently
enables the PWM output and it will always reflect the value of the last received RF packet.
RR (XBee Retries) Command
 The RR command is
used to set/read the maximum number of retries
the module will execute in addition to the 3
retries provided by the 802.15.4 MAC. For each
XBee retry, the 802.15.4 MAC can execute up to 3
retries.
AT Command: ATRR
Parameter Range: 0 - 6
Default: 0
Minimum Firmware Version Required: 1.xA0
The following applies when the DL parameter is set to 0xFFFF: If RR is set to zero (RR = 0), only
one packet is broadcast. If RR is set to a value greater than zero (RR > 0), (RR + 2) packets are
sent on each broadcast. No acknowledgements are returned on a broadcast.
This value does not need to be set on all modules for retries to work. If retries are enabled, the
transmitting module will set a bit in the Digi RF Packet header which requests the receiving module
to send an ACK (acknowledgement). If the transmitting module does not receive an ACK within
200 msec, it will re-send the packet within a random period up to 48 msec. Each XBee retry can
potentially result in the MAC sending the packet 4 times (1 try plus 3 retries). Note that retries are
not attempted for packets that are purged when transmitting with a Cyclic Sleep Coordinator.
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SC (Scan Channels) Command
 The SC command is
used to set and read the list of channels to scan
for all Active and Energy Scans as a bit field.
This affects scans initiated in command mode [AS
(Active Scan) and ED (Energy Scan) commands]
and during End Device Association and Coordinator startup.
AT Command: ATSC
Parameter Range: 1-0xFFFF [Bitfield]
(bits 0, 14, 15 are not allowed when using the
XBee-PRO)
Default Parameter Value: 0x1FFE (all XBeePRO channels)
Related Commands: ED (Energy Scan), SD
(Scan Duration)
Minimum Firmware Version Required: v1.x80
bit
bit
bit
bit
0x0B
0x0C
0x0D
0x0E
bit
bit
bit
bit
0x0F
0x10
0x11
0x12
bit
bit
bit
bit
8 - 0x13
9 - 0x14
10 - 0x15
11 - 0x16
bit
bit
bit
bit
12
13
14
15
0x17
0x18
0x19
0x1A
SD (Scan Duration) Command
 The SD command is
used to set and read the exponent value that
determines the duration (in time) of a scan.
End Device (Duration of Active Scan during
Association) - In a Beacon system, set SD = BE of
the Coordinator. SD must be set at least to the
highest BE parameter of any Beaconing Coordinator with which an End Device or Coordinator wish
to discover.
AT Command: ATSD
Parameter Range: 0 - 0x0F
Default Parameter Value: 4
Related Commands: ED (Energy Scan), SC
(Scan Channel)
Minimum Firmware Version Required: v1.x80
Coordinator - If the ‘ReassignPANID’ option is set on the Coordinator [refer to A2 parameter], the
SD parameter determines the length of time the Coordinator will scan channels to locate existing
PANs. If the ‘ReassignChannel’ option is set, SD determines how long the Coordinator will perform
an Energy Scan to determine which channel it will operate on.
Scan Time is measured as ((# of Channels to Scan) * (2 ^ SD) * 15.36ms). The number of channels to scan is set by the SC command. The XBee RF Module can scan up to 16 channels (SC =
0xFFFF). The XBee PRO RF Module can scan up to 12 channels (SC = 0x1FFE).
Examples: Values below show results for a 12‐channel scan
If SD = 0, time = 0.18 sec
SD = 8, time = 47.19 sec
SD = 2, time = 0.74 sec
SD = 10, time = 3.15 min
SD = 4, time = 2.95 sec
SD = 12, time = 12.58 min
SD = 6, time = 11.80 sec
SD = 14, time = 50.33 min
SH (Serial Number High) Command
 The SH command is used to read
the high 32 bits of the RF module's unique IEEE
64-bit address.
The module serial number is set at the factory
and is read-only.
AT Command: ATSH
Parameter Range: 0 - 0xFFFFFFFF [read-only]
Related Commands: SL (Serial Number Low),
MY (Source Address)
SL (Serial Number Low) Command
 The SL command is used to read
the low 32 bits of the RF module's unique IEEE
64-bit address.
The module serial number is set at the factory
and is read-only.
© 2011 Digi Internatonal, Inc.
AT Command: ATSL
Parameter Range: 0 - 0xFFFFFFFF [read-only]
Related Commands: SH (Serial Number High),
MY (Source Address)
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SM (Sleep Mode) Command
 The SM
command is used to set and read
Sleep Mode settings. By default,
Sleep Modes are disabled (SM = 0)
and the RF module remains in Idle/
Receive Mode. When in this state, the
module is constantly ready to respond
to either serial or RF activity.
* The Sleep Coordinator option
(SM=6) only exists for backwards
compatibility with firmware version
1.x06 only. In all other cases, use the
CE command to enable a Coordinator.
AT Command: ATSM
Parameter Range: 0 - 6
Parameter
Configuration
Disabled
Pin Hibernate
Pin Doze
(reserved)
Cyclic Sleep Remote
Cyclic Sleep Remote
(with Pin Wake-up)
Sleep Coordinator*
Default Parameter Value: 0
SO (Sleep Mode Command)
Sleep (Low Power) Sleep Options Set/Read the
sleep mode options.
Bit 0 - Poll wakeup disable
• 0 - Normal operations. A module configured
for cyclic sleep will poll for data on waking.
• 1 - Disable wakeup poll. A module configured
for cyclic sleep will not poll for data on waking.
AT Command: ATSO
Parameter
Range:
0-4
Default Parameter Value:
Related Commands: SM (Sleep Mode), ST
(Time before Sleep), DP (Disassociation Cyclic
Sleep Period, BE (Beacon Order)
Bit 1 - ADC/DIO wakeup sampling disable.
• 0 - Normal operations. A module configured
in a sleep mode with ADC/DIO sampling enabled will automatically perform a sampling on
wakeup.
• 1 - Suppress sample on wakeup. A module configured in a sleep mode with ADC/DIO sampling enabled will not automatically sample on wakeup.
SP (Cyclic Sleep Period) Command
 The SP command is
used to set and read the duration of time in which
a remote RF module sleeps. After the cyclic sleep
period is over, the module wakes and checks for
data. If data is not present, the module goes back
to sleep. The maximum sleep period is 268 seconds (SP = 0x68B0).
The SP parameter is only valid if the module is
configured to operate in Cyclic Sleep (SM = 4-6).
Coordinator and End Device SP values should
always be equal.
AT Command: ATSP
Parameter
Range:
NonBeacon Firmware:
0-0x68B0 [x 10 milliseconds]
Default Parameter Value:
Related Commands: SM (Sleep Mode), ST
(Time before Sleep), DP (Disassociation Cyclic
Sleep Period, BE (Beacon Order)
To send Direct Messages, set SP = 0.
NonBeacon Firmware
End Device - SP determines the sleep period for cyclic sleeping remotes. Maximum sleep period is
268 seconds (0x68B0).
Coordinator - If non-zero, SP determines the time to hold an indirect message before discarding it.
A Coordinator will discard indirect messages after a period of (2.5 * SP).
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
ST (Time before Sleep) Command
 The ST command is
used to set and read the period of inactivity (no
serial or RF data is sent or received) before activating Sleep Mode.
NonBeacon Firmware
Set/Read time period of inactivity (no serial or RF
data is sent or received) before activating Sleep
Mode. ST parameter is only valid with Cyclic Sleep
settings (SM = 4 - 5).
AT Command: ATST
Parameter
Range:
NonBeacon Firmware:
1 - 0xFFFF [x 1 millisecond]
Default Parameter Value:
Related Commands: SM (Sleep Mode), ST
(Time before Sleep)
Coordinator and End Device ST values must be equal.
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
T0 - T7 ((D0-D7) Output Timeout) Command
 The T0, T1,
AT Commands: ATT0 - ATT7
T2, T3, T4, T5, T6 and T7 commands are used to
Parameter Range:0 - 0xFF [x 100 msec]
set/read output timeout values for the lines that
Default Parameter Value:0xFF
correspond with the D0 - D7 parameters. When
output is set (due to I/O line passing) to a nonMinimum Firmware Version Required: v1.xA0
default level, a timer is started which when
expired, will set the output to its default level. The timer is reset when a valid I/O packet is
received. The Tn parameter defines the permissible amount of time to stay in a non-default
(active) state. If Tn = 0, Output Timeout is disabled (output levels are held indefinitely).
VL (Firmware Version - Verbose)
 The VL command is used to read
detailed version information about the RF module.
The information includes: 
application build date; MAC, PHY and bootloader
versions; and build dates. This command was
removed from firmware 1xC9 and later versions.
VR (Firmware Version) Command
 The VR command is used to read
which firmware version is stored in the module.
AT Command: ATVL
Parameter Range:0 - 0xFF
[x 100 milliseconds]
Default Parameter Value: 0x28 (40 decimal)
Minimum Firmware Version Required: v1.x80
- v1.xC8
AT Command: ATVR
Parameter Range: 0 - 0xFFFF [read only]
XBee version numbers will have four significant
digits. The reported number will show three or four numbers and is stated in hexadecimal notation. A version can be reported as "ABC" or "ABCD". Digits ABC are the main release number and
D is the revision number from the main release. "D" is not required and if it is not present, a zero
is assumed for D. "B" is a variant designator. The following variants exist:
• "0" = Non-Beacon Enabled 802.15.4 Code
• "1" = Beacon Enabled 802.15.4 Code
WR (Write) Command
<(Special)> The WR command is used to write
AT Command: ATWR
configurable parameters to the RF module's nonvolatile memory. Parameter values remain in the
module's memory until overwritten by subsequent use of the WR Command.
If changes are made without writing them to non-volatile memory, the module reverts back to previously saved parameters the next time the module is powered-on.
NOTE: Once the WR command is sent to the module, no additional characters should be sent until
after the “OK/r” response is received.
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API Operation
By default, XBee®/XBee-PRO® RF Modules act as a serial line replacement (Transparent Operation) - all UART data received through the DI pin is queued up for RF transmission. When the module receives an RF packet, the data is sent out the DO pin with no additional information.
Inherent to Transparent Operation are the following behaviors:
• If module parameter registers are to be set or queried, a special operation is required for
transitioning the module into Command Mode.
• In point-to-multipoint systems, the application must send extra information so that the
receiving module(s) can distinguish between data coming from different remotes.
As an alternative to the default Transparent Operation, API (Application Programming Interface)
Operations are available. API operation requires that communication with the module be done
through a structured interface (data is communicated in frames in a defined order). The API specifies how commands, command responses and module status messages are sent and received
from the module using a UART Data Frame.
API Frame Specifications
Two API modes are supported and both can be enabled using the AP (API Enable) command. Use
the following AP parameter values to configure the module to operate in a particular mode:
• AP = 0 (default): Transparent Operation (UART Serial line replacement)
API modes are disabled.
• AP = 1: API Operation
• AP = 2: API Operation (with escaped characters)
Any data received prior to the start delimiter is silently discarded. If the frame is not received correctly or if the checksum fails, the data is silently discarded.
API Operation (AP parameter = 1)
When this API mode is enabled (AP = 1), the UART data frame structure is defined as follows:
Figure 3‐09. UART Data Frame Structure:
Start Delimiter
(Byte 1)
0x7E
Length
(Bytes 2-3)
MSB
LSB
Frame Data
(Bytes 4-n)
Checksum
(Byte n + 1)
API-specific Structure
1 Byte
MSB = Most Significant Byte, LSB = Least Significant Byte
API Operation - with Escape Characters (AP parameter = 2)
When this API mode is enabled (AP = 2), the UART data frame structure is defined as follows:
Figure 3‐10. UART Data Frame Structure ‐ with escape control characters:
Start Delimiter
(Byte 1)
0x7E
Length
(Bytes 2-3)
MSB
LSB
Frame Data
(Bytes 4-n)
Checksum
(Byte n + 1)
API-specific Structure
1 Byte
Characters Escaped If Needed
MSB = Most Significant Byte, LSB = Least Significant Byte
Escape characters. When sending or receiving a UART data frame, specific data values must be
escaped (flagged) so they do not interfere with the UART or UART data frame operation. To escape
an interfering data byte, insert 0x7D and follow it with the byte to be escaped XOR’d with 0x20.
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Data bytes that need to be escaped:
• 0x7E – Frame Delimiter
• 0x7D – Escape
• 0x11 – XON
• 0x13 – XOFF
Example - Raw UART Data Frame (before escaping interfering bytes): 
0x7E 0x00 0x02 0x23 0x11 0xCB
0x11 needs to be escaped which results in the following frame: 
0x7E 0x00 0x02 0x23 0x7D 0x31 0xCB
Note: In the above example, the length of the raw data (excluding the checksum) is 0x0002 and
the checksum of the non-escaped data (excluding frame delimiter and length) is calculated as:
0xFF - (0x23 + 0x11) = (0xFF - 0x34) = 0xCB.
Checksum
To test data integrity, a checksum is calculated and verified on non-escaped data.
To calculate: Not including frame delimiters and length, add all bytes keeping only the lowest 8
bits of the result and subtract from 0xFF.
To verify: Add all bytes (include checksum, but not the delimiter and length). If the checksum is
correct, the sum will equal 0xFF.
API Types
Frame data of the UART data frame forms an API-specific structure as follows:
Start Delimiter
(Byte 1)
0x7E
Figure 3‐11. UART Data Frame & API‐specific Structure:
Length
Frame Data
(Bytes 2-3)
(Bytes 4- n)
MSB
LSB
Checksum
(Byte n + 1)
API-specific Structure
API Identifier
Identifier-specific Data
cmdID
cmdData
1 Byte
The cmdID frame (API-identifier) indicates which API messages will be contained in the cmdData
frame (Identifier-specific data). Refer to the sections that follow for more information regarding
the supported API types. Note that multi-byte values are sent big endian.
Modem Status
API Identifier: 0x8A
RF module status messages are sent from the module in response to specific conditions.
Figure 3‐12. Modem Status Frames
Start Delimiter
0 x7E
Length
MSB
Frame Data
LSB
API -specific Structure
API Identifier
Checksum
1 Byte
Identifier-specific Data
0x8 A
cmdData
Status (Byte 5 )
Hardware reset
W atchdog timer reset
Associated
Disassociated
Synchronization Lost
(Beacon -enabled only )
5 = Coordinator realignment
6 = Coordinator started
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AT Command
API Identifier Value: 0x08
The “AT Command” API type allows for module parameters to be queried or set. When using this
command ID, new parameter values are applied immediately. This includes any register set with
the “AT Command - Queue Parameter Value” (0x09) API type.
Figure 3‐13. AT Command Frames
Start Delimiter
0x7E
Length
MSB
Frame Data
LSB
Checksum
API-specific Structure
1 Byte
API Identifier
Identifier-specific Data
0x08
cmdData
Frame ID (Byte 5)
AT Command (Bytes 6-7)
Identifies the UART data frame for the host to
correlate with a subsequent ACK (acknowledgement).
If set to 0‘ ’, no response is sent.
Command Name - Two
ASCII characters that
identify the AT Command.
Parameter Value (Byte(s) 8-n)
If present, indicates the requested parameter
value to set the given register.
If no characters present, register is queried.
Figure 3‐14. Example: API frames when reading the DL parameter value of the module.
Byte 1
Byte 4
Byte 5
Bytes 6-7
Byte 8
0x08
0x52 (R)
0x44 (D) 0x4C (L)
0x15
API Identifier
Frame ID**
AT Command
Checksum
Bytes 2-3
0x7E
0x00
Start Delimiter
0x04
Length*
* Length [Bytes] = API Identifier + Frame ID + AT Command
** “R” value was arbitrarily selected.
Figure 3‐15. Example: API frames when modifying the DL parameter value of the module.
Byte 1
0x7E
Start Delimiter
Bytes 2-3
0x00
Byte 4
Byte 5
Bytes 6-7
Bytes 8-11
Byte 12
0x08
0x4D (M)
0x44 (D) 0x4C (L)
0x00000FFF
0x0C
API Identifier
Frame ID**
AT Command
Parameter Value
Checksum
0x08
Length*
* Length [Bytes] = API Identifier + Frame ID + AT Command + Parameter Value
** “M” value was arbitrarily selected.
AT Command - Queue Parameter Value
API Identifier Value: 0x09
This API type allows module parameters to be queried or set. In contrast to the “AT Command” API
type, new parameter values are queued and not applied until either the “AT Command” (0x08) API
type or the AC (Apply Changes) command is issued. Register queries (reading parameter values)
are returned immediately.
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XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
AT Command Response
API Identifier Value: 0x88
Response to previous command.
In response to an AT Command message, the module will send an AT Command Response message. Some commands will send back multiple frames (for example, the ND (Node Discover) and
AS (Active Scan) commands). These commands will end by sending a frame with a status of
ATCMD_OK and no cmdData.
Figure 3‐16. AT Command Response Frames.
Start Delimiter
Length
0x7E
MSB
Frame Data
LSB
Checksum
API-specific Structure
1 Byte
API Identifier
Identifier-specific Data
0x88
cmdData
Status (Byte 8)
Frame ID (Byte 5 )
AT Command (Bytes 6-7)
Identifies the UART data frame being reported.
Note: If Frame ID = 0 in AT Command Mode,
no AT Command Response will be given.
Command Name - Two
ASCII characters that
identify the AT Command.
Value (Byte(s) 9-n)
OK
ERROR
Invalid Command
Invalid Parameter
The HEX (non -ASCII) value
of the requested register
Figure 3‐17. AT Command Response Frames.
Start Delimiter
Length
0x7E
MSB
LSB
Frame Data
Checksum
API-specific Structure
1 Byte
API Identifier
Identifier-specific Data
0x88
cmdData
Frame ID (Byte 5 )
AT Command (Bytes 6-7)
Identifies the UART data frame being reported.
Note: If Frame ID = 0 in AT Command Mode,
no AT Command Response will be given.
Command Name - Two
ASCII characters that
identify the AT Command.
Status (Byte 8)
Value (Byte(s) 9-n)
OK
ERROR
Invalid Command
Invalid Parameter
The HEX (non-ASCII) value
of the requested register
Remote AT Command Request
API Identifier Value: 0x17
Allows for module parameter registers on a remote device to be queried or set
Figure 3‐18. Remote AT Command Request
Start Delimiter
0x7E
Length
MSB
LSB
Frame Data
Checksum
API-specific Structure
1 Byte
API Identifier
Identifier-specific Data
0x17
cmdData
Frame ID (Byte 5)
16-bit Destination Network Address
(bytes 14-15)
Identifies the UART data frame for the host to
correlate with a subsequent ACK (acknowledgement).
If set to ‘0’, no AT Command Response will be given.
Set to match the 16-bit network
address of the destination, MSB
first, LSB last. Set to 0xFFFE if 64-bit
addressing is being used.
Command Name (bytes
17-18)
Name of the
command
64-bit Destination Address
(bytes 6-13)
Set to match the 64-bit address
of the destination, MSB first,
LSB last. Broadcast =
0x000000000000FFFF. This field is ignored if the 16-bit
network address field equals anything other than
0xFFFE.
© 2011 Digi Internatonal, Inc.
Command Options (byte 16)
0x02 - Apply changes on remote. (If
not set, AC command must be sent
before changes will take effect.)
All other bits must be set to 0.
Command Data (byte 19-n)
If present, indicates the requested
parameter value to set the given
register. If no characters present,
the register is queried.
62
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Remote Command Response
API Identifier Value: 0x97
If a module receives a remote command response RF data frame in response to a Remote AT Command Request, the module will send a Remote AT Command Response message out the UART.
Some commands may send back multiple frames--for example, Node Discover (ND) command.
Figure 3‐19. Remote AT Command Response.
Start Delimiter
Length
0x7E
MSB
Frame Data
LSB
Checksum
API- specific Structure
API Identifier
1 Byte
Identifier- specific Data
0x97
cmdData
Frame ID( Byte5)
64- bit Responder
Address( bytes6-13)
16-
bit Responder Network Address
( bytes
14-15)
Indicates the64- bit address
of the remote module that is
responding to the Remote
AT Command request
Identifies the UART data frame being reported
Matches the Frame ID of the Remote Command
Request the remote is responding. to
Set to the16- bit network
address of the remote.
Command Name( bytes
16-17)
Name of the command. Two
ASCII characters that
identify the AT command
Status( byte 18)
0 = OK
1 = Error
2 = Invalid Command
3 = Invalid Parameter
4 = No Response
Command Data( byte 19-n)
The value of the requested
register.
TX (Transmit) Request: 64-bit address
API Identifier Value: 0x00
A TX Request message will cause the module to transmit data as an RF Packet.
Figure 3‐20. TX Packet (64‐bit address) Frames
Start Delimiter
0x7E
Length
MSB
Frame ID (Byte 5)
LSB
Frame Data
Checksum
API-specific Structure
1 Byte
API Identifier
Identifier-specific Data
0x00
cmdData
Destination Address (Bytes 6-13)
Identifies the UART data frame for the host to
correlate with a subsequent ACK (acknowledgement).
Setting Frame ID to ‘0' will disable response frame.
MSB first, LSB last.
Broadcast =
0x000000000000FFFF
© 2011 Digi Internatonal, Inc.
Options (Byte 14)
0x01 = Disable ACK
0x04 = Send packet with Broadcast Pan ID
All other bits must be set to 0.
RF Data (Byte(s) 15-n)
Up to 100 Bytes per packet
63
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
TX (Transmit) Request: 16-bit address
API Identifier Value: 0x01
A TX Request message will cause the module to transmit data as an RF Packet.
Figure 3‐21. TX Packet (16‐bit address) Frames
Start Delimiter
0x7E
Length
MSB
Frame ID (Byte 5)
LSB
Frame Data
Checksum
API-specific Structure
1 Byte
API Identifier
Identifier-specific Data
0x01
cmdData
Destination Address (Bytes 6-7)
Identifies the UART data frame for the host to
correlate with a subsequent ACK (acknowledgement).
Setting Frame ID to ‘0' will disable response frame.
MSB first, LSB last.
Broadcast = 0xFFFF
© 2011 Digi Internatonal, Inc.
Options (Byte 8)
0x01 = Disable ACK
0x04 = Send packet with Broadcast Pan ID
All other bits must be set to 0.
RF Data (Byte(s) 9-n)
Up to 100 Bytes per packet
64
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
TX (Transmit) Status
API Identifier Value: 0x89
When a TX Request is completed, the module sends a TX Status message. This message will indicate if the packet was transmitted successfully or if there was a failure.
Figure 3‐22. TX Status Frames
Start Delimiter
Length
0x7E
MSB
LSB
Frame Data
Checksum
API-specific Structure
1 Byte
API Identifier
Identifier-specific Data
0x89
cmdData
Frame ID (Byte 5)
Status (Byte 6)
Identifies UART data frame being reported.
Note: If Frame ID = 0 in the TX Request, no
AT Command Response will be given.
0 = Success
1 = No ACK (Acknowledgement) received
2 = CCA failure
3 = Purged
NOTES:
• “STATUS = 1” occurs when all retries are expired and no ACK is received.
• If transmitter broadcasts (destination address = 0x000000000000FFFF), only 
“STATUS = 0 or 2” will be returned.
• “STATUS = 3” occurs when Coordinator times out of an indirect transmission. 
Timeout is defined as (2.5 x SP (Cyclic Sleep Period) parameter value).
RX (Receive) Packet: 64-bit Address
API Identifier Value: 0x80
When the module receives an RF packet, it is sent out the UART using this message type.
Figure 3‐23. RX Packet (64‐bit address) Frames
Start Delimiter
Length
0x7E
MSB
LSB
Frame Data
Checksum
API-specific Structure
1 Byte
API Identifier
Identifier-specific Data
0x80
cmdData
Source Address (Bytes 5-12)
RSSI (Byte 13)
MSB (most significant byte) first,
LSB (least significant) last
Options (Byte 14)
Received Signal Strength Indicator Hexadecimal equivalent of (-dBm) value.
(For example: If RX signal strength = -40
dBm, “0x28” (40 decimal) is returned)
bit 0 [reserved]
bit 1 = Address broadcast
bit 2 = PAN broadcast
bits 3-7 [reserved]
RF Data (Byte(s) 15-n)
Up to 100 Bytes per packet
RX (Receive) Packet: 16-bit Address
API Identifier Value: 0x81
When the module receives an RF packet, it is sent out the UART using this message type.
Figure 3‐24. RX Packet (16‐bit address) Frames
Start Delimiter
0x7E
Source Address (Bytes 5-6)
MSB (most significant byte) first,
LSB (least significant) last
Length
MSB
LSB
Frame Data
Checksum
API-specific Structure
1 Byte
API Identifier
Identifier-specific Data
0x81
cmdData
RSSI (Byte 7)
Received Signal Strength Indicator Hexadecimal equivalent of (-dBm) value.
(For example: If RX signal strength = -40
dBm, “0x28” (40 decimal) is returned)
© 2011 Digi Internatonal, Inc.
Options (Byte 8)
bit 0 [reserved]
bit 1 = Address broadcast
bit 2 = PAN broadcast
bits 3-7 [reserved]
RF Data (Byte(s) 9-n)
Up to 100 Bytes per packet
65
Appendix A: Agency Certifications
United States (FCC)
XBee®/XBee-PRO® RF Modules comply with Part 15 of the FCC rules and regulations. Compliance
with the labeling requirements, FCC notices and antenna usage guidelines is required.
To fulfill FCC Certification requirements, the OEM must comply with the following regulations:
1.
The system integrator must ensure that the text on the external label provided with this
device is placed on the outside of the final product [Figure A-01].
2.
XBee®/XBee-PRO® RF Modules may only be used with antennas that have been tested and
approved for use with this module [refer to the antenna tables in this section].
OEM Labeling Requirements
WARNING: The Original Equipment Manufacturer (OEM) must ensure that FCC labeling
requirements are met. This includes a clearly visible label on the outside of the final
product enclosure that displays the contents shown in the figure below.
Figure 4‐01. Required FCC Label for OEM products containing the XBee®/XBee‐PRO® RF Module
Contains FCC ID: OUR-XBEE/OUR-XBEEPRO**
The enclosed device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (i.) this device may not cause harmful interference and (ii.) this device must accept any interference received, including interference that may cause undesired operation.
* The FCC ID for the XBee is “OUR‐XBEE”. The FCC ID for the XBee‐PRO is “OUR‐XBEEPRO”.
FCC Notices
IMPORTANT: The XBee®/XBee-PRO® RF Module has been certified by the FCC for use with other
products without any further certification (as per FCC section 2.1091). Modifications not expressly
approved by Digi could void the user's authority to operate the equipment.
IMPORTANT: OEMs must test final product to comply with unintentional radiators (FCC section
15.107 & 15.109) before declaring compliance of their final product to Part 15 of the FCC Rules.
IMPORTANT: The RF module has been certified for remote and base radio applications. If the
module will be used for portable applications, the device must undergo SAR testing.
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Re-orient or relocate the receiving antenna,
Increase the separation between the equipment and receiver, Connect equipment and receiver to
outlets on different circuits, or Consult the dealer or an experienced radio/TV technician for help.
© 2011 Digi International Inc.
66
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
FCC-Approved Antennas (2.4 GHz)
XBee/XBee-PRO RF Modules can be installed using antennas and cables constructed with standard connectors (TypeN, SMA, TNC, etc.) if the installation is performed professionally and according to FCC guidelines. For installations
not performed by a professional, non-standard connectors (RPSMA, RPTNC, etc) must be used.
The modules are FCC-approved for fixed base station and mobile applications on channels 0x0B - 0x1A (XBee) and
0x0C - 0x17 (XBee-PRO). If the antenna is mounted at least 20cm (8 in.) from nearby persons, the application is
considered a mobile application. Antennas not listed in the table must be tested to comply with FCC Section 15.203
(Unique Antenna Connectors) and Section 15.247 (Emissions).
XBee RF Modules (1 mW): XBee Modules have been tested and approved for use with the antennas listed in the
first and second tables below (Cable loss is required as shown).
XBee-PRO RF Modules (60 mW): XBee-PRO Modules have been tested and approved for use with the antennas
listed in the first and third tables below (Cable loss is required as shown).
The antennas in the tables below have been approved for use with this module. Digi does not carry all of these
antenna variants. Contact Digi Sales for available antennas.
Antennas approved for use with the XBee®/XBee‐PRO® RF Modules (Cable loss is not required.)
Part Number
A24-HASM-450
Type (Description)
Dipole (Half-wave articulated RPSMA - 4.5”)
Gain
2.1 dBi
Application*
Fixed/Mobile
Min. Separation
20 cm
A24-HABSM
Dipole (Articulated RPSMA)
2.1 dBi
Fixed
20 cm
A24-HABUF-P5I
Dipole (Half-wave articulated bulkhead mount U.FL. w/ 5” pigtail)
2.1 dBi
Fixed
20 cm
A24-HASM-525
Dipole (Half-wave articulated RPSMA - 5.25")
2.1 dBi
Fixed/Mobile
20 cm
A24-QI
Monopole (Integrated whip)
1.5 dBi
Fixed
20 cm
A24-C1
Surface Mount
-1.5 dBi
Fixed/Mobile
20 cm
Antennas approved for use with the XBee RF Modules (Cable loss is required)
Part Number Type (Description)
Yagi Class Antennas
A24-Y6NF
Yagi (6-element)
Gain
Application* Min. Separation Required Cable-loss
8.8 dBi
Fixed
2m
1.7 dB
A24-Y7NF
Yagi (7-element)
9.0 dBi
Fixed
2m
1.9 dB
A24-Y9NF
Yagi (9-element)
10.0 dBi
Fixed
2m
2.9 dB
A24-Y10NF
Yagi (10-element)
11.0 dBi
Fixed
2m
3.9 dB
A24-Y12NF
Yagi (12-element)
12.0 dBi
Fixed
2m
4.9 dB
A24-Y13NF
Yagi (13-element)
12.0 dBi
Fixed
2m
4.9 dB
A24-Y15NF
Yagi (15-element)
12.5 dBi
Fixed
2m
5.4 dB
A24-Y16NF
Yagi (16-element)
13.5 dBi
Fixed
2m
6.4 dB
A24-Y16RM
Yagi (16-element, RPSMA connector)
13.5 dBi
Fixed
2m
6.4 dB
7.9 dB
A24-Y18NF
Yagi (18-element)
Omni-Directional Class Antennas
29000430
Integrated PCB Antenna
15.0 dBi
Fixed
2m
-0.5dBi
Fixed/Mobile
20 cm
A24-F2NF
Omni-directional (Fiberglass base station)
2.1 dBi
Fixed/Mobile
20 cm
A24-F3NF
Omni-directional (Fiberglass base station)
3.0 dBi
Fixed/Mobile
20 cm
A24-F5NF
Omni-directional (Fiberglass base station)
5.0 dBi
Fixed/Mobile
20 cm
A24-F8NF
Omni-directional (Fiberglass base station)
8.0 dBi
Fixed
2m
A24-F9NF
Omni-directional (Fiberglass base station)
9.5 dBi
Fixed
2m
0.2 dB
A24-F10NF
Omni-directional (Fiberglass base station)
10.0 dBi
Fixed
2m
0.7 dB
A24-F12NF
Omni-directional (Fiberglass base station)
12.0 dBi
Fixed
2m
2.7 dB
A24-F15NF
Omni-directional (Fiberglass base station)
15.0 dBi
Fixed
2m
5.7 dB
A24-W7NF
Omni-directional (Base station)
7.2 dBi
Fixed
2m
7.2 dBi
Fixed
2m
A24-M7NF
Omni-directional (Mag-mount base station)
Panel Class Antennas
A24-P8SF
Flat Panel
8.5 dBi
Fixed
2m
1.5 dB
A24-P8NF
Flat Panel
8.5 dBi
Fixed
2m
1.5 dB
A24-P13NF
Flat Panel
13.0 dBi
Fixed
2m
6 dB
A24-P14NF
Flat Panel
14.0 dBi
Fixed
2m
7 dB
A24-P15NF
Flat Panel
15.0 dBi
Fixed
2m
8 dB
© 2011 Digi Internatonal, Inc.
67
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Part Number
A24-P16NF
Type (Description)
Flat Panel
Gain
16.0 dBi
Application* Min. Separation Required Cable-loss
Fixed
2m
9 dB
Antennas approved for use with the XBee®/XBee‐PRO® RF Modules (Cable‐loss is required)
Part Number Type (Description)
Yagi Class Antennas
A24-Y4NF
Yagi (4-element)
Gain
Application* Min. Separation Required Cable-loss
6.0 dBi
Fixed
2m
8.1 dB
A24-Y6NF
Yagi (6-element)
8.8 dBi
Fixed
2m
10.9 dB
A24-Y7NF
Yagi (7-element)
9.0 dBi
Fixed
2m
11.1 dB
A24-Y9NF
Yagi (9-element)
10.0 dBi
Fixed
2m
12.1 dB
A24-Y10NF
Yagi (10-element)
11.0 dBi
Fixed
2m
13.1 dB
A24-Y12NF
Yagi (12-element)
12.0 dBi
Fixed
2m
14.1 dB
A24-Y13NF
Yagi (13-element)
12.0 dBi
Fixed
2m
14.1 dB
A24-Y15NF
Yagi (15-element)
12.5 dBi
Fixed
2m
14.6 dB
A24-Y16NF
Yagi (16-element)
13.5 dBi
Fixed
2m
15.6 dB
A24-Y16RM
Yagi (16-element, RPSMA connector)
13.5 dBi
Fixed
2m
15.6 dB
A24-Y18NF
Yagi (18-element)
Omni-Directional Class Antennas
A24-F2NF
Omni-directional (Fiberglass base station)
15.0 dBi
Fixed
2m
17.1 dB
2.1 dBi
Fixed/Mobile
20 cm
4.2 dB
A24-F3NF
Omni-directional (Fiberglass base station)
3.0 dBi
Fixed/Mobile
20 cm
5.1 dB
A24-F5NF
Omni-directional (Fiberglass base station)
5.0 dBi
Fixed/Mobile
20 cm
7.1 dB
A24-F8NF
Omni-directional (Fiberglass base station)
8.0 dBi
Fixed
2m
10.1 dB
A24-F9NF
Omni-directional (Fiberglass base station)
9.5 dBi
Fixed
2m
11.6 dB
A24-F10NF
Omni-directional (Fiberglass base station)
10.0 dBi
Fixed
2m
12.1 dB
A24-F12NF
Omni-directional (Fiberglass base station)
12.0 dBi
Fixed
2m
14.1 dB
A24-F15NF
Omni-directional (Fiberglass base station)
15.0 dBi
Fixed
2m
17.1 dB
A24-W7NF
Omni-directional (Base station)
7.2 dBi
Fixed
2m
9.3 dB
7.2 dBi
Fixed
2m
9.3 dB
A24-M7NF
Omni-directional (Mag-mount base station)
Panel Class Antennas
A24-P8SF
Flat Panel
8.5 dBi
Fixed
2m
8.6 dB
A24-P8NF
Flat Panel
8.5 dBi
Fixed
2m
8.6 dB
A24-P13NF
Flat Panel
13.0 dBi
Fixed
2m
13.1 dB
A24-P14NF
Flat Panel
14.0 dBi
Fixed
2m
14.1 dB
A24-P15NF
Flat Panel
15.0 dBi
Fixed
2m
15.1 dB
A24-P16NF
Flat Panel
16.0 dBi
Fixed
2m
16.1 dB
A24-P19NF
Flat Panel
19.0 dBi
Fixed
2m
19.1 dB
* If using the RF module in a portable application (For example ‐ If the module is used in a handheld device and the antenna is less
than 20cm from the human body when the device is operation): The integrator is responsible for passing additional SAR (Specific
Absorption Rate) testing based on FCC rules 2.1091 and FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic
Fields, OET Bulletin and Supplement C. The testing results will be submitted to the FCC for approval prior to selling the integrated
unit. The required SAR testing measures emissions from the module and how they affect the person.
RF Exposure
WARNING: To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distance of
20 cm or more should be maintained between the antenna of this device and persons during device operation.
To ensure compliance, operations at closer than this distance is not recommended. The antenna used for this
transmitter must not be co-located in conjunction with any other antenna or transmitter.
The preceding statement must be included as a CAUTION statement in OEM product manuals in order to alert users
of FCC RF Exposure compliance.
Europe (ETSI)
The XBee RF Modules have been certified for use in several European countries. For a complete
list, refer to www.digi.com
© 2011 Digi Internatonal, Inc.
68
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
If the XBee RF Modules are incorporated into a product, the manufacturer must ensure compliance
of the final product to the European harmonized EMC and low-voltage/safety standards. A
Declaration of Conformity must be issued for each of these standards and kept on file as described
in Annex II of the R&TTE Directive.
Furthermore, the manufacturer must maintain a copy of the XBee user manual documentation and
ensure the final product does not exceed the specified power ratings, antenna specifications, and/
or installation requirements as specified in the user manual. If any of these specifications are
exceeded in the final product, a submission must be made to a notified body for compliance
testing to all required standards.
OEM Labeling Requirements
The 'CE' marking must be affixed to a visible location on the OEM product.
CE Labeling Requirements
The CE mark shall consist of the initials "CE" taking the following form:
• If the CE marking is reduced or enlarged, the proportions given in the above graduated drawing must be respected.
• The CE marking must have a height of at least 5mm except where this is not possible on
account of the nature of the apparatus.
• The CE marking must be affixed visibly, legibly, and indelibly.
Restrictions
Power Output: When operating in Europe, XBee-PRO 802.15.4 modules must operate at or
below a transmit power output level of 10dBm. Customers have two choices for transmitting at or
below 10dBm:
a. Order the standard XBee-PRO module and change the PL command to 0 (10dBm)
b. Order the International variant of the XBee-PRO module, which has a maximum transmit
output power of 10dBm (@ PL=4).
Additionally, European regulations stipulate an EIRP power maximum of 12.86 dBm (19 mW) for
the XBee-PRO and 12.11 dBm for the XBee when integrating antennas.
France: Outdoor use limited to 10 mW EIRP within the band 2454-2483.5 MHz.
Norway: Norway prohibits operation near Ny-Alesund in Svalbard. More information can be found
at the Norway Posts and Telecommunications site (www.npt.no).
Declarations of Conformity
Digi has issued Declarations of Conformity for the XBee RF Modules concerning emissions, EMC
and safety. Files can be obtained by contacting Digi Support.
Important Note:
Digi does not list the entire set of standards that must be met for each country. Digi customers
assume full responsibility for learning and meeting the required guidelines for each country in their
distribution market. For more information relating to European compliance of an OEM product
incorporating the XBee RF Module, contact Digi, or refer to the following web sites:
CEPT ERC 70-03E - Technical Requirements, European restrictions and general requirements:
Available at www.ero.dk/.
R&TTE Directive - Equipment requirements, placement on market: Available at www.ero.dk/.
Approved Antennas
When integrating high-gain antennas, European regulations stipulate EIRP power maximums. Use
the following guidelines to determine which antennas to design into an application.
XBee-PRO RF Module
The following antenna types have been tested and approved for use with the XBee Module:
© 2011 Digi Internatonal, Inc.
69
XBee®/XBee‐PRO® RF Modules ‐ 802.15.4 ‐ v1.xEx [2011.06.1]
Antenna Type: Yagi
RF module was tested and approved with 15 dBi antenna gain with 1 dB cable-loss (EIRP Maximum of 14 dBm). Any Yagi type antenna with 14 dBi gain or less can be used with no cable-loss.
Antenna Type: Omni-directional
RF module was tested and approved with 15 dBi antenna gain with 1 dB cable-loss (EIRP Maximum of 14 dBm). Any Omni-directional type antenna with 14 dBi gain or less can be used with no
cable-loss.
Antenna Type: Flat Panel
RF module was tested and approved with 19 dBi antenna gain with 4.8 dB cable-loss (EIRP Maximum of 14.2 dBm). Any Flat Panel type antenna with 14.2 dBi gain or less can be used with no
cable-loss.
XBee-PRO RF Module (@ 10 dBm Transmit Power, PL parameter value must equal 0, or use International variant)
The following antennas have been tested and approved for use with the embedded XBee-PRO RF
Module:
• Dipole (2.1 dBi, Omni-directional, Articulated RPSMA, Digi part number A24-HABSM)
• Chip Antenna (-1.5 dBi)
• Attached Monopole Whip (1.5 dBi)
The RF modem encasement was designed to accommodate the RPSMA antenna option.
Canada (IC)
Labeling Requirements
Labeling requirements for Industry Canada are similar to those of the FCC. A clearly visible label
on the outside of the final product enclosure must display the following text:
Contains Model XBee Radio, IC: 4214A-XBEE
Contains Model XBee-PRO Radio, IC: 4214A-XBEEPRO
The integrator is responsible for its product to comply with IC ICES-003 & FCC Part 15, Sub. B Unintentional Radiators. ICES-003 is the same as FCC Part 15 Sub. B and Industry Canada accepts
FCC test report or CISPR 22 test report for compliance with ICES-003.
Japan
In order to gain approval for use in Japan, the XBee RF module or the International variant of the
XBee-PRO RF module (which has 10 dBm transmit output power) must be used.
Labeling Requirements
A clearly visible label on the outside of the final product enclosure must display the following text:
ID: 005NYCA0378
© 2011 Digi Internatonal, Inc.
70
Appendix B. Additional Information
1-Year Warranty
XBee®/XBee-PRO® RF Modules from Digi International, Inc. (the "Product") are warranted
against defects in materials and workmanship under normal use, for a period of 1-year from the
date of purchase. In the event of a product failure due to materials or workmanship, Digi will
repair or replace the defective product. For warranty service, return the defective product to Digi,
shipping prepaid, for prompt repair or replacement.
The foregoing sets forth the full extent of Digi's warranties regarding the Product. Repair or
replacement at Digi's option is the exclusive remedy. THIS WARRANTY IS GIVEN IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, AND DIGI SPECIFICALLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL DIGI,
ITS SUPPLIERS OR LICENSORS BE LIABLE FOR DAMAGES IN EXCESS OF THE PURCHASE PRICE
OF THE PRODUCT, FOR ANY LOSS OF USE, LOSS OF TIME, INCONVENIENCE, COMMERCIAL LOSS,
LOST PROFITS OR SAVINGS, OR OTHER INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES
ARISING OUT OF THE USE OR INABILITY TO USE THE PRODUCT, TO THE FULL EXTENT SUCH MAY
BE DISCLAIMED BY LAW. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES. THEREFORE, THE FOREGOING EXCLUSIONS MAY NOT
APPLY IN ALL CASES. This warranty provides specific legal rights. Other rights which vary from
state to state may also apply.
© 2011 Digi International Inc.
71

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