Digi XBEE-PRO S3B Manual

XBee‐PRO®900HP/XBee‐PRO®XSCRFModules
©2014DigiInternationalInc. 117
HT (Time before Wake-up Initializer) Command
ID (Modem VID) Command
Command Summary Description
AT Command: ATHT
<Sleep (Low Power)> If any modules within range are running
in a “Cyclic Sleep” setting, a wake-up initializer must be used
by the transmitting module for sleeping modules to remain
awake [refer to the LH (“Wake-up InitializerTimer”) Command].
When a receiving module in Cyclic Sleep wakes, it must detect
the wake-up initializer in order to remain awake and
receive data. The value of HT Parameter tells the transmitter,
“After a period of inactivity (no transmitting or receiving)
lasting HT amount of time, send a long wake-up initializer”. HT
Parameter should be set to match the inactivity time out
[specified by ST (Time before Sleep) Command]
used by the receiver(s). From the receiving module perspective,
after HT time elapses and the inactivity
time out [ST Command] is met, the receiver goes into cyclic
sleep. In cyclic sleep, the receiver wakes once per sleep interval
to check for a wakeup initializer. When a wake-up initializer is
detected, the module will stay awake to receive data. The
wake-up initializer must be longer than the
cyclic sleep interval to ensure that sleeping modules detect
incoming data. When HT time elapses, the transmitter then
knows that it needs to send a long Wake-up Initializer for all
receivers to be able to remain awake and
receive the next transmission. Matching HT to the time
specified by ST on the receiving module guarantees that all
receivers will detect the next transmission.
Binary Command: 0x03 (3 decimal)
Parameter Range:0 – 0xFFFF
[x 100 milliseconds]
Default Parameter Value: 0xFFFF (means
that long wake-up initializer will not be
sent)
Number of bytes returned: 2
Related Commands: LH (Wake-up
Initializer Timer), SM (Sleep Mode), ST
(Time before Sleep)
Command Summary Description
AT Command: ATID
<Networking> Set/Read the “Vendor
Identification Number”. Only modems
with matching IDs can communicate
with each other. Modules with non-
matching
VIDs will not receive unintended data
transmission.
Binary Command: 0x27 (39 decimal)
Parameter Range (user-set table) 0x10 -
0x7FFFF
(Factory-set and read-only) 0x8000 –
0xFFFF
Number of bytes returned: 2

Digi XBEE-PRO S3B Specifications

General

Brand	Digi
Model	XBEE-PRO S3B
Category	Control Unit
Language	English