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Transmission, addressing, and routing ZDO transmissions

XBee/XBee-PRO ZigBee RF Modules User Guide 70

0x0031 - Cluster ID (LQI Request, or Neighbor table request)

0x0000 - Profile ID (ZigBee Device Profile)

0x00 - Broadcast radius

0x00 - Tx Options

0x76 - Transaction sequence number

0x00 - Required payload for LQI request command

0xCE - Checksum (0xFF - SUM (all bytes after length))

Description

This API frame sends a ZDO LQI request (neighbor table request) to a remote device to obtain data from its

neighbor table. Recall that the AO command must be set correctly on an API device to enable the explicit API

receive frames in order to receive the ZDO response.

Example 2: send a ZDO network address request to discover the 16-bit address of a remote

Looking at the ZigBee specification, the cluster ID for a network Address Request is 0x0000, and the payload only

requires the following:

[64-bit address] + [Request Type] + [Start Index]

This example will send a Network Address Request as a broadcast transmission to discover the 16-bit address of

the device with a 64-bit address of 0x0013A200 40401234. The request type and start index will be set to 0, and

the transaction sequence number will be set to 0x44

API frame

7E 001F 11 01 00000000 0000FFFF FFFE 00 00 0000 0000 00 00 44 34124040 00A21300 00 00 33

0x001F - length

0x11 - Explicit transmit request

0x01 - frame ID (set to a non-zero value to enable the transmit status message, or set to 0 to disable)

0x00000000 0000FFFF - 64-bit address for a broadcast transmission

0xFFFE - Set to this value for a broadcast transmission.

0x00 - Source endpoint

0x00 - Destination endpoint

0x0000 - Cluster ID (Network Address Request)

0x0000 - Profile ID (ZigBee Device Profile)

0x00 - Broadcast radius

0x00 - Tx Options

0x44 - Transaction sequence number

0x34124040 00A21300 00 00 - Required payload for Network Address Request command

0x33 - Checksum (0xFF - SUM (all bytes after length))

Description

This API frame sends a broadcast ZDO Network Address Request to obtain the 16-bit address of a device with a

64-bit address of 0x0013A200 40401234. Note the bytes for the 64-bit address were inserted in little endian byte

order. All multi-byte fields in the API payload of a ZDO command must have their data inserted in little endian

Digi XBEE2 User Manual

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