XStream‐PKG‐E™ Ethernet RF Modem – Product Manual v4.2B5
SM ( Sle e p M ode ) Com m a nd
< Sleep Mode ( Low Power ) > SM Com m and is
used t o adj ust Sleep Mode set t ings. By default ,
Sleep Mode is disabled and t he m odem r em ains
cont inually act ive. SM Com m and allow s t he
m odem t o r un in a low er - power st at e and be
configured in one of eight set t ings.
Cy clic Sleep set t ings w ak e t he m odem after t he
am ount of t im e designated by SM Com m and. I f
t he m odem det ect s a w ak e- up init ializer dur ing
t he t im e it is aw ak e, it w ill sy nchr onize w it h t he
t r ansm it ter and star t receiv ing dat a aft er t he
w ak e- up init ializer r uns it s durat ion. Ot her w ise, it
ret ur ns to Sleep Mode and cont inue t o cycle in
and out of inact iv ity unt il t he Wak e- up I nit ializer
is det ect ed. I f a Cy clic Sleep set t ing is chosen,
t he ST, LH and HT par am et er s m ust also be set
as descr ibed in t he “ Sleep Mode” sect ion of t his
m anual.
AT Command: ATSM
Binary Command: 0x01
Parameter Range: 0 – 8
Parameter
Configuration
0
Disabled
1
Pin Sleep
2
Serial Port Sleep
3
Cyclic 0.5 second sleep
(Modem wakes every
0.5 seconds)
4
Cyclic 1.0 second sleep
5
Cyclic 2.0 second sleep
6
Cyclic 4.0 second sleep
7
Cyclic 8.0 second sleep
8
Cyclic 16.0 second sleep
Default Parameter Value: 0
Number of bytes returned: 1
Related Commands:
For Pin Sleep – PC (Power-up Mode), PW (Pin
Wake-up)
For Serial Port Sleep – ST (Time before Sleep)
For Cyclic Sleep – ST (Time before Sleep), LH
(Wake-up Initializer Timer), HT (Time Before
Wake-up Initializer), PW (Pin Wake-up)
ST ( Tim e be for e Sle ep) Com m a n d
< Sleep Mode ( Low Pow er ) > ST Com m and set s
t he per iod of t im e ( in t ent hs of seconds) in which
t he m odem r em ains inact iv e befor e ent er ing into
Sleep Mode. For ex am ple, if t he ST Par am et er is
set t o 0x 64 ( 100 decim al) , t he m odem w ill enter
int o Sleep m ode after 10 seconds of inact iv ity ( no
t r ansm it t ing or r eceiv ing) . This com m and can
only be used if Cy clic Sleep or Ser ial Por t Sleep
Mode set t ings hav e been select ed using SM
( Sleep Mode) Com m and.
AT Command: ATST
Binary Command: 0x02
Parameter Range: 0x10 – 0xFFFF
(x 100 milliseconds)
Default Parameter Value: 0x64 (100 decimal)
Number of bytes returned: 2
Related Commands: SM (Sleep Mode), LH
(Wake-up Initializer Timer), HT (Time before
Wake-up Initializer)
SY ( Tim e be for e I nit ia liza t ion ) Com m a nd
< Net work ing> SY Com m and keeps a
com m unicat ion channel open as long as m odem
t r ansm it s or r eceiv es before t he act iv e connect ion
ex pir es. I t can be used to r educe lat ency in a
quer y / response sequence and should be set 100
m s longer t han the delay bet ween tr ansm issions.
This com m and allows m ult iple XSt ream Modem s
t o share a hopping channel for a given am ount of
AT Command: ATSY
Binary Command: 0x17 (23 decimal)
Parameter Range: 0 – 0xFF
(x 100 milliseconds)
Default Parameter Value: 0 (Disabled - channel
initialization information is sent with each RF
packet.)
Number of bytes returned: 1
t im e after r eceiv ing dat a. By default , all pack et s include an RF init ializer t hat cont ains channel
inform at ion used t o sy nchronize any list ening receiver s to t he tr ansm it ter ’s hopping pat t ern.
Once a new m odem com es w ithin r ange or is pow er ed on w it hin r ange, it is able t o inst ant ly
sy nchr onize to the transm it t er and st ar t receiv ing dat a. I f no new m odem s ar e intr oduced int o
t he sy st em , t he synchronizat ion infor m at ion becom es redundant once m odem s have becom e
sy nchronized.
© 2014 Digi International Inc.
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