Digi XBee User Manual

© 2014 Digi International Inc. 58
XBee/XBee-PRO
®
DigiMesh 2.4 User Manual
Diagnostics
ED
Energy Detect. Start an Energy Detect Scan. This
parameter is the time in milliseconds to scan all channels.
The Module will loop through all the channels until the
time elapses. The maximal energy on each channel is
returned, and each value is followed by a comma with
the list ending with a charriage return. The values
returned reflect the detected energy level in units of -
dBm.
0-0x3A98
AT
Command
Name and Description
Parameter
Range
Default
BC
Bytes Transmitted. The number of RF bytes
transmitted. This count is incremented for every PHY-
level byte transmitted. The purpose of this count is to
estimate battery life by tracking time spent doing
transmissions. This number rolls over to zero from
0xFFFF. The counter can be reset to any 16-bit value by
appending a hexadecimal parameter to the command.
0 to 0xFFFF 0
DB
Received Signal Strength. This command reports the
received signal strength of the last received RF data
packet. The DB command only indicates the signal
strength of the last hop. It does not provide an accurate
quality measurement for a multihop link. The DB
command value is measured in -dBm. For example if DB
returns 0x60, then the RSSI of the last packet received
was -96dBm.
n/a n/a
GD
Good Packets. Read the number of good frames with
valid MAC headers that are received on the RF interface.
When the value reaches 0xFFFF, it stays there.
n/a n/a
EA
MAC ACK Timeouts. This count is incremented
whenever a MAC ACK timeout occurs on a MAC-level
unicast. Once the number reaches 0xFFFF, further events
will not be counted. The counter can be reset to any 16-
bit value by appending a hexadecimal parameter to the
command.
0-0xFFFF 0
TR
Transmission Errors. Read the number of MAC frames
that exhaust MAC retries without ever receiving a MAC
acknowledgement message from the adjacent node.
When the value reaches 0xffff, it stays there.
n/a n/a
UA
MAC Unicast Transmission Count. This count is
incremented whenever a MAC unicast transmission
occurs for which an ACK is requested. Once the number
reaches 0xFFFF, further evens will not be counted. The
counter can be reset to any 16-bit value by appending a
hexadecimal parameter to the command.
0-0xFFFF 0
%H
MAC Unicast One Hop Time. The MAC unicast one hop
timeout in milliseconds. Changing MAC parameters can
change this value.
[read-only]
%8
MAC Broadcast One Hop Time. The MAC broadcast
one hop timeout in milliseconds. Changing MAC
parameters can change this value.
[read-only]
AT
Command
Name and Description
Parameter
Range
Default

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