Digi XBee Product Manual

Command descriptions for the XBee/XBee-PRO RF Module
XBee / XBee-PRO RF Modules 802.15.4 Product Manual 71
<Networking {Association}> 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.
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
<Networking {Security}> 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.
When encryption is enabled, the module will 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.
FP (Force Poll) command
<Networking (Association)> The FP command is used to request indirect messages being held by a
Coordinator.
AT Command: ATEE
Parameter Range:0 - 1
Parameter Configuration
0 Disabled
1Enabled
Default Parameter Value:0
Related Commands: KY (Encryption Key), AP (API Enable), MM (MAC Mode)
Minimum Firmware Version Required: v1.xA0
AT Command: ATFP
Minimum Firmware Version Required: v1.x80

Digi XBee Specifications

General

Operating Frequency	2.4 GHz
RF Data Rate	250 kbps
Model	XBee S2C
Category	Control Unit
Operating Voltage	2.1 to 3.6V DC
Operating Temperature	-40 to +85 °C
Interface	UART
Dimensions	24.38 x 27.61 x 9.14 mm