XB24-BUIT-004 Digi International/Maxstream, XB24-BUIT-004 Datasheet - Page 41
![no-image](/images/no-image-200.jpg)
XB24-BUIT-004
Manufacturer Part Number
XB24-BUIT-004
Description
MODULE 802.15.4 SER 2 U.FL CONN
Manufacturer
Digi International/Maxstream
Series
XBee™r
Datasheet
1.XB24-BPDK.pdf
(91 pages)
Specifications of XB24-BUIT-004
Frequency
2.4GHz
Data Rate - Maximum
250kbps
Modulation Or Protocol
802.15.4
Applications
Home/Building Automation, Industrial Control, ZigBee™
Power - Output
2 mW (3 dBm)
Sensitivity
-96dBm
Voltage - Supply
2.1 V ~ 3.6 V
Current - Receiving
38mA
Current - Transmitting
35mA
Data Interface
PCB, Through Hole
Antenna Connector
U.FL
Operating Temperature
-40°C ~ 85°C
Package / Case
Module
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Memory Size
-
XBee ZNet 2.5/XBee‐PRO ZNet 2.5 ZigBee OEM RF Modules v1.x4x
Transmitting poll request to parent
(SN = 1)
On/Sleep
S e t tin g S O = 4 w ill c a u s e t h e e n d d e v ic e to s le e p fo r th e e n t ir e S P * S N tim e . T h is
O n /S le e p ( S O = 4 )
T r a n s m ittin g P o ll R e q u e s t to P a r e n t ( S O = 4 )
s h o u ld o n ly b e u s e d if t h e e n d d e v ic e w ill n o t r e c e iv e R F d a t a w h ile s le e p in g .
? t = S P * S N
? t = SP * SN
Setting SN > 1 allows the XBee to silently poll for data without asserting On/Sleep. If RF data is received
? t = S P * S N
? t = SP
Sleep_RQ
Transmitting Poll
Request
Legend
Transmitting Data to End Devices
Figure 4‐016.Polling for Data without Asserting On/Sleep
Figure 4‐017.Transmitting Poll Request to Parent
Since a parent can only buffer data up to 30 seconds, an end device should only sleep for more
than 30 seconds if it will not receive RF data when sleeping. The ST parameter can be set to keep
the end device awake after transmitting data to receive RF data. The commissioning push button
can be used to force the end device to wake for 30 seconds. See section 6.4 for details.
To reliably transmit data to an end device, SP should be set the same on the end device, the end
device’s parent, and on the device that is initiating a transmission to the end device. SP
determines the transmission timeout on the sender, the time to buffer the received packet on the
parent, and the time to sleep on the end device.
© 2008 Digi International, Inc.
when polling, On/Sleep will immediately assert.
On/Sleep
(SN = 3)
Transmitting poll request to parent
? t = SP
? t = SP * SN
40