
ZigBee networks
Zigbee application layers: in depth
XBee/XBee-PRO® S2C ZigBee® RF Module
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Routers and end devices
Routers and end devices are typically configured to join a network with any 16-bit PAN ID as long as
the 64-bit PAN ID is valid. Coordinators typically select a random 16-bit PAN ID for their network.
Since the 16-bit PAN ID only allows up to 65,535 unique values, and the device randomly selects the
16-bit PAN ID, provisions exist in ZigBee to detect if two networks (with different 64-bit PAN IDs) are
operating on the same 16- bit PAN ID. If the device detects a conflict, the ZigBee stack can perform
PAN ID conflict resolution to change the 16- bit PAN ID of the network in order to resolve the conflict.
See the ZigBee specification for details.
ZigBee routers and end devices should be configured with the 64-bit PAN ID of the network they want
to join, and they typically acquire the 16-bit PAN ID when they join a network.
Operating channels
ZigBee uses direct-sequence spread spectrum modulation and operates on a fixed channel. The
802.15.4 PHY defines 16 operating channels (channels 11 to 26) in the 2.4 GHz frequency band. XBee
modules support all 16 channels.
Zigbee application layers: in depth
The following topics provide a more in-depth look at the ZigBee application stack layers (APS, ZDO)
including a discussion on ZigBee endpoints, clusters, and profiles. Much of the material in these topics
discuss details of the ZigBee stack that are not required in many cases.
Read these topics if:
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The XBee/XBee-PRO ZigBee RF Module may talk to non-Digi ZigBee devices.
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The XBee/XBee-PRO ZigBee RF Module requires network management and discovery
capabilities of the ZDO layer.
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The XBee/XBee-PRO ZigBee RF Module needs to operate in a public application profile (for
example, smart energy, home automation, and so on).
Skip these topics if:
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The XBee/XBee-PRO ZigBee RF Module does not need to interoperate or talk to non-Digi
ZigBee devices.
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The XBee/XBee-PRO ZigBee RF Module simply needs to send data between devices.
Application Support Sublayer (APS)
The APS layer in ZigBee adds support for application profiles, cluster IDs, and endpoints.
Application profiles
Application profiles specify various device descriptions including required functionality for various
devices. The collection of device descriptions forms an application profile. Application profiles are
defined as Public or Private profiles. Private profiles are defined by a manufacturer whereas public
profiles are defined, developed, and maintained by the ZigBee Alliance. Each application profile has a
unique profile identifier assigned by the ZigBee Alliance.
Examples of public profiles include:
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