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Transmission, addressing, and routing ZDO transmissions

XBee/XBee-PRO® S2C ZigBee® RF Module

Note We set the serial interface rate to 115200 b/s for data throughput measurements, and

measured the time to send 100,000 bytes from source to destination. During the test, no route

discoveries or failures occurred.

ZDO transmissions

ZigBee defines a ZigBee Device Objects layer (ZDO) that provides device and service discovery and

network management capabilities.

ZDO

Cluster name

Cluster

ID Description

NetworkAddressRequest 0x0000 Request a 16-bit address of the radio with a matching 64-bit

address (required parameter).

ActiveEndpoints Request 0x0005 Request a list of endpoints from a remote device.

LQI Request 0x0031 Request data from a neighbor table of a remote device.

Routing Table Request 0x0032 Request to retrieve routing table entries from a remote

device.

NetworAddressResponse 0x8000 Response that includes the 16-bit address of a device.

LQI Response 0x8031 Response that includes neighbor table data from a remote

device.

Routing Table Response 0x8032 Response that includes routing table entry data from a

remote device.

Refer to the ZigBee specification for a detailed description of all ZigBee Device Profile services.

Sending a ZDO command

You must use an explicit transmit API frame to send a ZDO command, and it must be formatted

correctly. Set the source and destination endpoints and profile ID to 0. Set the cluster ID to match the

cluster ID of the appropriate service. For example, to send an active endpoints request, set the cluster

ID to 0x0005.

The first byte of payload in the API frame is an application sequence number (transaction sequence

number) that can be set to any single byte value. The first byte of the ZDO response uses this same

value. All remaining payload bytes must be set as required by the ZDO. All multi-byte values must be

sent in little endian byte order.

Receiving ZDO command and responses

In XBee ZB firmware, you can easily send ZDO commands using the API. To receive incoming ZDO

commands, enable receiver application addressingwith the AO command. See the examples later in

this section. Not all incoming ZDO commands are passed up to the application.

When a ZDO message is received on endpoint 0 and profile ID 0, the cluster ID indicates the type of

ZDO message received. The first byte of payload is generally a sequence number that corresponds to

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