User's Manual

XBee®/XBee‐PRO®RFModules‐802.15.4‐v1.xEx[2011.012.6]
©2011DigiInternatonal,Inc. 35
*Firmwareversioninwhichthecommand wasfirstintroduced(firmwareversionsarenumberedinhexadecimalnotation.)
AT Command Options
*Firmwareversioninwhichthecommandwasfirstintroduced(firmwareversionsarenumberedinhexadecimalnotation.)
HV (v1.x80*) Diagnostics Hardware Version. Read hardware version of the RF module. 0 - 0xFFFF [read-only] Factory-set
DB 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
on a packet transmission. This count saturates at its maximum value. Set the parameter
to “0” to reset count.
0 - 0xFFFF -
ED (v1.x80*) 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
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.
0 - 6 -
Tabl e3‐08. XBee®/XBee‐PRO®Com mands‐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 re-
initialize 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
is used to prevent inadvertent entrance into AT Command Mode.
2 - 0x0CE4 [x 1 ms]
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.
0 - 0xFF
0x2B
(‘+’ ASCII)
Tabl e3‐07. XBee®/XBee‐PRO®Com mands‐Diagnostics
AT
Command
Command
Category
Name and Description Parameter Range Default