Operate in API mode
Frame descriptions
Queue Local AT Command Request - 0x09
Response frame: Local AT Command Response - 0x88
Description
This frame type is used to query or set queued command parameters on the local device. In contrast
to Local AT Command Request - 0x08, this frame queues new parameter values and does not apply
them until you either:
n
Issue a Local AT Command using the 0x08 frame
n
Issue an AC command—queued or otherwise
When querying parameter values, this frame behaves identically to Local AT Command Request - 0x08:
You can query parameter values by sending this frame with a command but no parameter value
field—the two-byte AT command is immediately followed by the frame checksum. When an AT
command is queried, a Local AT Command Response - 0x88 frame is populated with the parameter
value that is currently set on the device. The Frame ID of the 0x88 response is the same one set by the
command in the 0x09 request frame.
Format
The following table provides the contents of the frame. For details on frame structure, see API frame
specifications.
Offset
Size
Frame Field
Description
0
1
3
4
8-bit
16-bit
8-bit
8-bit
Start Delimiter Indicates the start of an API frame.
Length
Number of bytes between the length and checksum.
Frame type
Frame ID
Queue Local AT Command Request - 0x09
Identifies the data frame for the host to correlate with a
subsequent response.
If set to0, the device will not emit a response frame.
AT command
The two ASCII characters that identify the AT Command.
5
16-bit
Parameter
value
(optional)
If present, indicates the requested parameter value to set
the given register at a later time.
If no characters are present, it queries the current
parameter value and returns the result in the response.
7-n
variable
EOF
8-bit
Checksum
0xFF minus the 8-bit sum of bytes from offset 3 to this byte
(between length and checksum).
Examples
Each example is written without escapes (AP = 1) and all bytes are represented in hex format. For
brevity, the start delimiter, length, and checksum fields have been excluded.
Queue setting local command parameter
Set the UART baud rate to 115200, but do not apply changes immediately.
XBee/XBee-PRO S2C 802.15.4 RF Module User Guide
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ETC [ ETC ]
