Frame descriptions Transmit Status frame - 0x8B
XBee®-PRO 900HP/XSC RF Modules
140
Transmit Status frame - 0x8B
Description
When a Transmit Request (0x10, 0x11) completes, the device sends a Transmit Status message out of
the serial interface. This message indicates if the Transmit Request was successful or if it failed.
Note Broadcast transmissions are not acknowledged and always return a status of 0x00, even if the
delivery failed.
Format
The following table provides the contents of the frame. For details on frame structure, see API frame
format.
Frame data
fields Offset Description
Frame type 3 0x8B
Frame ID 4 Identifies the serial interface data frame being reported. If Frame ID = 0 in
the associated request frame, no response frame is delivered.
Reserved 5-6 Set to 0xFFFE.
Transmitretry
count
7
The number of application transmission retries that occur.
Delivery
status
8
0x00 = Success
0x01 = MAC ACK failure
0x02 = Collision avoidance failure
0x21 = Network ACK failure
0x25 = Route not found
0x31 = Internal resource error
0x32 = Internal error
0x74 = Payload too large
0x75 = Indirect message requested
Discovery
status
9
0x00 = No discovery overhead
0x02 = Route discovery
Example
In the following example, the destination device reports a successful unicast data transmission
successful and a route discovery occurred. The outgoing Transmit Request that this response frame
uses Frame ID of 0x47.
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