Operate in API mode API frames
XBee®/XBee-PRO SX RF Module User Guide
134
Route Information Packet frame - 0x8D
Description
If you enable NACK or the Trace Route option on a DigiMesh unicast transmission, a device can output
this frame for the transmission.
Format
The following table provides the contents of the frame. For details on frame structure, see API frame
specifications.
Frame data fields Offset Description
Frame type 3 0x8D
Source event 4
0x11 = NACK
0x12 = Trace route
Length 5 The number of bytes that follow, excluding the checksum. If the
length increases, new items have been added to the end of the list
for future revisions.
Timestamp 6-9 System timer value on the node generating the Route Information
Packet.
The timestamp is in microseconds. Only use this value for
relative time measurements because the time stamp count restarts
approximately every hour.
ACK timeout count 10
The number of MAC ACK timeouts that occur.
TX blocked count
11
The number of times the transmission was blocked due to reception
in progress.
Reserved
12
Reserved, set to 0s.
Destinationaddress 13-20 The address of the final destination node of this network-level
transmission.
Source address 21-28 Address of the source node of this network-level transmission.
Responder address 29-36 Address of the node that generates this Route Information packet
after it sends (or attempts to send) the packet to the next hop (the
Receiver node).
Receiver address 37-44 Address of the node that the device sends (or attempts to send) the
data packet.
Example
The following example represents a possible Route Information Packet. A device receives the packet
when it performs a trace route on a transmission from one device (serial number 0x0013A200
4052AAAA) to another (serial number 0x0013A200 4052DDDD).
This particular frame indicates that the network successfully forwards the transmission from one
device (serial number 0x0013A200 4052BBBB) to another device (serial number 0x0013A200
4052CCCC).
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