XBP24-PKI-001-RA Digi International/Maxstream, XBP24-PKI-001-RA Datasheet - Page 12

• Manufacturer Part Number: XBP24-PKI-001-RA
• Description: MODULE 802.15.4 RS-232 ANT
• Manufacturer: Digi International/Maxstream
• Series: XBEE-PRO™r

Specifications of XBP24-PKI-001-RA

• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4
• Applications: Home/Building Automation, Industrial Control, ZigBee™
• Power - Output: 0dBm
• Sensitivity: -92dBm
• Voltage - Supply: 2.8 V ~ 3.4 V
• Current - Receiving: 55mA
• Data Interface: Connector, Female DB-9
• Antenna Connector: RP-SMA
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Memory Size: -
• Current - Transmitting: -
• Other names: Q3255595

© 2008 Digi International, Inc.
XBee‐PRO PKG‐R® RS‐232 RF Modem – 802.15.4 ‐ Product Manual v1.xAx
3.2. IEEE 802.15.4 Networks
3.2.1. NonBeacon
3.2.2. NonBeacon (w/ Coordinator)
The following IEEE 802.15.4 network types are available to the RF modem:
The following terms will be used to explicate the network system types:
Table 3‐02. Terms and definitions (Applicable networking network types are designated within <brackets>.)
By default, XBee-PRO RF Modems are configured to support NonBeacon communications (no
Coordinator). NonBeacon systems operate within a Peer-to-Peer network topology and are not
dependent upon Master/Slave relationships. This means that modems remain synchronized
without use of master/server configurations and each modem in the network shares both roles of
master and slave. Digi's peer-to-peer architecture features fast synchronization times and fast
cold start times. This default configuration accommodates a wide range of RF data applications.
Figure 3‐03. NonBeacon Peer‐to‐Peer Architecture
A peer-to-peer network can be established by
configuring each modem to operate as an End Device (CE = 0), disabling End Device Association
on all modems (A1 = 0) and setting ID and CH parameters to be identical across the network.
A device is configured as a Coordinator by setting the CE (Coordinator Enable) parameter to “1”.
Coordinator power-up is governed by the A2 (Coordinator Association) command.
In a NonBeacon (w/ Coordinator) system, the Coordinator can be configured to use direct or
indirect transmissions. If the SP (Cyclic Sleep Period) parameter is set to “0”, the Coordinator will
send data immediately. Otherwise, the SP parameter determines the length of time the
Coordinator will retain the data before discarding it. Generally, SP (Cyclic Sleep Period) and ST
(Time before Sleep) parameters should be set to match the SP and ST settings of the End Devices.
Association plays a critical role in the implementation of a NonBeacon (w/ Coordinator) system. Refer
to the Association section [next page] for more information.
Term
Association
Coordinator
End Device
PAN
• NonBeacon
• NonBeacon (w/ Coordinator)
Definition
<NonBeacon (w/ Coordinator) systems only>
The establishment of membership between End Devices and a Coordinator.
<NonBeacon (w/ Coordinator) systems only>
A central RF modem that is configured to provide synchronization services through the
transmission of beacons.
When in the same network as a Coordinator - RF modems that rely on a Coordinator for
synchronization and can be put into states of sleep for low-power applications.
Personal Area Network - A data communication network that includes one or more End
Devices and optionally a Coordinator.
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