XK-Z11-M Digi International, XK-Z11-M Datasheet - Page 64

• Manufacturer Part Number: XK-Z11-M
• Description: ZIGBEE MODULE DEVELOPMENT KIT
• Manufacturer: Digi International
• Series: XBee™r
• Type: Transceiver, 802.15.4/ZigBeer

Specifications of XK-Z11-M

• Frequency: 2.4GHz
• For Use With/related Products: XBee Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 602-1184

© 2010 Digi International, Inc.
XBee®/XBee‐PRO® ZB RF Modules
Repairing Source Routes
Create Source Route API frame. The XBee can buffer one source route that includes up to 10 hops
(excluding source and destination).
For example, suppose a network exists with a coordinator and 5 routers (R1, R2, R3, R4, R5) with known
source routes as shown below.
To send a source-routed packet to R3, the application must send a Create Source Route API frame (0x21)
to the XBee, with a destination of R3, and 2 hops (R1 and R2). If the 64- bit address of R3 is 0x0013A200
404a1234 and the 16-bit addresses of R1, R2, and R3 are:
Then the Create Source Route API frame would be:
7E 0012 21 00 0013A200 404A1234 EEFF 00 02 CCDD AABB 5C
Where:
0x0012 - length
0x21 - API ID (create source route)
0x00 - frame ID (set to 0 always)
0x0013A200 404A1234 - 64-bit address of R3 (destination)
0xEEFF - 16-bit address of R3 (destination)
0x00 - Route options (set to 0)
0x02 - Number of intermediate devices in the source route
0xCCDD - Address of furthest device (1-hop from target)
0xAABB - Address of next-closer device
0x5C - Checksum (0xFF - SUM (all bytes after length))
It is possible in a network to have an existing source route fail (i.e. a device in the route moves or goes
down, etc.). If a device goes down in a source routed network, all routes that used the device will be
broken.
As mentioned previously, source routing must be used with many-to-one routing. (A device that uses
source routing must also send a periodic many-to-one broadcast in order to keep routes fresh). If a source
route is broken, remote devices must send in new route record transmissions to the data collector to
Device 16-bit address
R1
R2
R3
0xAABB
0xCCDD
0xEEFF
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