MaxStream 9 XCite- PKG- R XC09-009PKC-R Series User manual

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355 South 520 West , Suit e 180
Lindon, UT 84042
Phone: ( 80 1) 76 5- 9885
Fax : ( 80 1) 765- 9 89 5
rf- xper ts@m ax st ream .net
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9 XCit e- PKG- R™ RS- 2 3 2 / 4 8 5 RF M odem
9XCit e RS- 2 32 / 4 85 RF Modem
I nt erfacing Pr ot ocol
RF Modem Op er at ion
RF Modem Configurat ion
Advanced Net working
Appendices
Product Manual v2 .1
For RF Mod em Part Num b er s: XC09- 00 9PKC- R…
XC09-038PKC- R…
Low Pow e r, Low Cost Box ed RF Mode m s by M ax St ream , I n c.
M100103
2007.01.04

9XCite‐PKG‐R™RS‐232/485RFModem‐ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc. ii
© 2 0 0 7 M a xSt r e a m , I n c. All r ig ht s r ese r ve d
Nopartofthecontentsofthismanualmaybetransmittedorreproducedinany
formorbyanymeanswithoutthewrittenpermissionofMaxStream,Inc.
XCite™andXCite‐PKG‐R™aretrademarksofMaxStream,Inc.
TechnicalSupport:Phone:(801)765‐9885
LiveChat:www.maxstream.net
E‐mail:rf‐[email protected]

Contents
9XCite‐PKG‐R™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc. iii
1 . 9 X Cit e RS- 2 3 2 / 4 8 5 RF Mode m 4
1 . 1 . Ke y Fe a t u re s 4
1.1.1. Worldwide Acceptance 4
1 . 2 . Spe cifica t ion s 5
1 . 3 . Ex t e r na l I n t er fa ce 6
2 . I n t e rfa cin g Pr ot oco l 7
2 .1 . RS- 2 3 2 Ope ration 7
2.1.1. DI P Sw it ch Set tings and Pin Signals 7
2.1.2. Wiring Diagram s 8
2 .2 . RS- 4 8 5 ( 2 - w ir e) Ope ra tion 9
2.2.1. DI P Sw it ch Set tings and Pin Signals 9
2.2.2. Wiring Diagram 9
2 .3 . RS- 4 8 5 ( 4 - w ir e) & RS- 4 2 2 Ope rat ion 1 0
2.3.1. DI P Sw it ch Set tings and Pin Signals 10
2.3.2. Wir in g Diagram s 1 0
3 . RF Mode m Opera tion 1 2
3 .1 . Ser ia l Com m un ications 1 2
3.1.1. RS- 23 2 an d RS- 48 5/ 422 Dat a Flow 1 2
3.1.2. Serial Data 12
3 .2 . Mode s of Ope ration 1 3
3.2.1. I dle Mode 13
3.2.2. Transm it Mode 13
3.2.3. Receive Mode 14
3.2.4. Sleep Modes 15
3.2.5. Com m and Mode 17
4 . RF M ode m Con fig ur a t ion 1 8
4 .1 . Com m and a nd Pa ra m et er Type s 1 8
4.1.1. AT Com m ands 18
4.1.2. Non -AT Set t able Par am et er s ( X- CTU Soft -
ware configur able only) 18
4 . 2 . Con figu ra t ion Soft w a r e 1 9
4.2.1. I nst allat ion 19
4.2.2. Ser ial Com m unications Soft war e 19
4 .3 . Com m an d Refe re nce Ta bles 2 0
4 . 4 . Au t om at ic D I P Sw it ch Con fi gu r a t ion s 2 2
4 .5 . Com m a nd D escript ions 2 3
5 . Ad va n ce d N e t w or kin g 3 2
5 .1 . Addr essing 3 2
5.1.1. Ven dor I d ent ificat ion Num b er ( ATI D) 32
5.1.2. Channel ( ATHP) 33
5.1.3. Destinat ion Address ( ATDT) and Add ress
Mask ( ATMK) 3 3
Ap pe n dix A: Ag en cy Ce r t ifica t io ns 3 5
FCC ( Un it e d St a t e s) Cer t if ica t ion 3 5
Labeling Requir em ent s 3 5
FCC Not ices 35
Lim it ed Modular Approv al 36
FCC- ap pr ov ed An t en nas 3 6
I C ( I ndu stry Canada ) Cer t ificat ion 3 7
Labeling Requir em ent s 3 7
Ap pe n dix B: Ad dit io na l I n f or m a t ion 3 8
1 - Ye ar W ar ra nt y 3 8
Or d er in g I nf or m a t ion 3 8
Con t a ct M a xSt r e am 3 9

9XCite‐PKG‐R™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc.
1.9XCiteRS‐232/485RFModem
The XCit e- PKG- R RS- 232/ 48 5 RF Modem pr o-
vides OEMs and system int egrat ors wit h a low
power wireless solut ion t hat is easy- t o- use.
No configu rat ion is necessar y f or ou t- of- box RF
operat ion . Sim ply f eed dat a int o on e m odem ;
t hen t h e dat a is sent ou t t he ot her en d of t he
wir eless link . I f m or e advanced funct ionalit y is
needed , t he m odem su ppor t an ex t en siv e set of
com m ands.
The RF m odem operat es w it hin t he I SM 900
MHz fr equency band.
1 .1 . Ke y Fe at u re s
Lo ng Ra n ge Da t a I nt e gr it y
4 m W Pow e r Ou t pu t ( 0 dBm )
• I n door / Urban: up t o 3 00 ' ( 90 m )
• Ou t door RF lin e- of- sig ht :
up to 100 0' ( 300 m ) w / 2 .1 dB dipole ant enna
Re ce ive r Se nsit iv it y
• - 1 08 dBm ( @ 96 00 baud) ,
• - 1 04 dBm ( @ 38 40 0 baud)
Ad va nce d N e t w o r kin g & Se cu rit y
Tr ue Peer - t o- Peer ( no " m a st er " r equir ed) ,
Point - t o- Point & Poin t- t o- Mu lt ip oint net w or kin g
Hopp in g ( Frequency Hopping Spread Spectrum )
or Single Fr equency Modes
7 hopping channels: each with over 65,000
netw ork addresses available
Up t o 9 non- overlapping sim ult aneous net wor ks
Low Pow e r
Pow er- dow n curr ent as low as 1 m A
105 m A t ransm it / 55 m A receive current
consu m pt ion
Ea sy - t o- Use
No configuration required
Advanced configurat ions available t hrough
A
com m ands
7 to 18V pow er supply
Cont inuous RF dat a st ream of
up t o 38.4 kbps
XI I ™ I nt er ference I m m unit y
X- CTU Soft war e inclu ded
Cover m ore ground wit h few er radio
m odem s due t o m arket- leading range
Fr ee & U nlim it e d T ech ni ca l Su pp or t
1 .1 .1 . W orldw ide Acce pt a nce
FCC Ce r t ifie d ( USA) [ Refer t o Appendix A for FCC Requirem ent s]
Sy st em s t hat con t ain XCit e Modem s inh er it MaxSt r eam 's FCC Cer tificat ion
I C ( I ndu stry Cana da ) Cer t ified
I SM ( I n du st r ia l, Scie nt if ic & M ed ica l) licen se- fr ee 90 2- 928 MHz f requency band
Man ufact u red u nd er I SO 9 0 0 1 :2 0 0 0 r egist er ed st an da rds

9XCite‐PKG‐R™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc.
1 .2 . Specifica t ions
Table1‐01. 9XCite‐PKG‐RRS‐232/485RFModem
9XCite 900 MHz RS-232/485 RF Modem Specifications
Performance
Transmit Power Output 4mW
Indoor/Urban Range Up to 300’ (90 m)
Outdoor
RF line-of-sight Range Up to 1000’ (300 m)
Interface Data Rate
(software selectable using BD command) 1200 –57600 bps
Throughput Data Rate (baud) 9600 bps 38400 bps
RF Data Rate (baud) 10,000 bps 41,666 bps
Receiver Sensitivity -108 dBm -104 dBm
Power Requirements
Supply Voltage 7 - 18 VDC
Transmit Current 105 mA
Receive Current 55 mA
Power-down Current < 1 mA
Networking & Security
Frequency 902-928 MHz
Spread Spectrum Frequency Hopping, Wide band FM modulator
Modulation FSK (Frequency Shift Keying)
Network Topologies Supported Peer-to-Peer (“Master/Slave” relationship not required), Point-to-Point & Point-to-Multipoint
Channel Capacity Hopping Mode - 7 hop sequences share 25 frequencies
Single Frequency Mode - 25 available frequencies
Physical Properties
RF Modem Board Size 2.75" x 5.50" x 1.124" (7.90 cm x 13.90 cm x3.80 cm)
Weight 7.1 oz. (200 g), Extruded aluminum, black anodized
Serial Connector DB-9
Operating Temperature 0 to 70º C (commercial)
Antenna
Connector RPSMA (Reverse-polarity SMA)
Type Half-wave dipole whip, 6.75” (17.15cm), 2.1 dBi gain
Impedance 50 ohms unbalanced
Certifications (partial list)
FCC Part 15.247 OUR-9XCITE
Industry Canada (IC) 4214A-9XCITE

9XCite‐PKG‐R™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc.
1 .3 . Ex t e rn al I n t e rfa ce
Figure1‐03. DIPSwitchSettings
1 - 0 1 a. Pow e r Sw it ch
Figure1‐01. FrontView Move Pow er Switch to t he ON (up) posit ion t o pow er t he XCite RS-
232 / 485 RF Modem .
1 - 0 1 b. I / O & Pow e r LED s
LEDs indicat e m odem act iv ity as follows:
Yellow ( t op LED) = Ser ial Dat a Out ( t o h ost )
Green ( m idd le) = Ser ial Dat a I n ( from host )
Red ( bot t om ) = Pow er / TX I n dicat or ( Red light is on w hen
powered; it pulses on/ off br iefly during RF t ransm ission.)
1 - 0 1 c. DB- 9 Seria l Port
St an dar d fem ale RS- 23 2 ( DB- 9 ) DCE con nect or - Por t is also used for
RS-485 and RS- 422 connect ions.
1 - 0 1 d. Pow er Connect or*
7- 18 VDC Pow er Connect or ( Cent er posit iv e, 5.5/ 2.1 m m ) - Power
can also be supplied through Pin 9 of t he ser ial port .
1 - 0 2 a. DI P Sw it ch
Figure1‐02. BackView DI P Sw it ch aut om at ically con fig ur es t he XCit e Mod ule t o operat e in
differ ent m odes. Each tim e t he RF m odem is pow er ed- on, int elligence
on t he XI B- R int erface board program s t he em bedded m odule accord-
ing t o t he posit ions of t he DI P Sw it ch. [ See t he figur e below for DI P
Sw it ch set t in gs.]
I n cases where AT Com m ands should not be sent each t im e t he RF
Modem is powered on, t he processor m ust be disabled by populat ing
J7 on the int erface boar d. [ See " Au t om at ic DI P Sw it ch Con figura-
tions" sect ion for m ore infor m at ion] .
1 - 0 2 b. Config ( Con figur at ion) Sw itch
Configurat ion Sw it ch provides an alt er nat e way t o ent er "AT Com -
m and Mode" . To ent er " AT Com m and Mode" at t he RF m odem 's
default baud rat e, hold t he Configuration Switch down while powering
on t he m odem using t he Power Sw it ch.
1 - 0 2 c. Ant enna Port
Th i s p or t i s a 5 0 Oh m RF si gn al connect or for connect in g t o an RPSMA
( Rev er se Polar it y SMA) t y pe ant enna. The RPSMA h as t h reads on t he
out side of a barrel and a m ale cent er conduct or.
1‐01a. Power
Switch
1‐01b. LEDs:
Yellow(top)
Green(middle)
Red(bottom)
1‐01c. DB‐9
Serial Port 1‐01d. Power
Connector
1‐02a.DIP
Switch
1‐02b. Configuration
Switch
1‐02c. Antenna
Port

9XCite™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc. 7
2.InterfacingProtocol
The 9XCit e RS- 232/ 48 5 RF Mod em su ppor ts t he follow ing int er facin g prot ocols:
• RS-232
• RS- 485 ( 2 - wir e) Half- d uplex
• RS- 485 ( 4 - wir e) an d RS- 42 2
2 .1 . RS- 2 3 2 Operation
2 .1 .1 . DI P Sw it ch Sett in gs a nd Pin Signals
*The‘PinReferenceName’providesanassociativetagthatreferencescommandsusedtodefinepinbehaviors.
GPIstandsforʺGeneralPurposeInputʺandGPOstandsforʺGeneralPurposeOutputʺ.Asanexample,theCD
commandisusedtodefinethebehaviorofGPO2(DB‐9pinnumber1).The‘PinReferenceName’isthename
usedwhenreferringtoXCitecommandsandparameters.
Table2‐01. RS‐232SignalsandtheirimplementationsontheXCiteRFModem
(Low‐assertedsignalsaredistinguishedbyhorizontallineoverpinname.)
DB-9 Pin RS-232
Name
Pin Reference
Name* Description Implementation
1 DCD DO2 Data-Carrier-Detect Connected to DSR (pin6)
2 RXD DO Received Data Serial data exiting the RF modem (to host)
3 TXD DI Transmitted Data Serial data entering into the RF modem (from host)
4 DTR DI2 Data-Terminal-Ready Can enable Power-Down on the RF modemy
5 GND - Ground Signal Ground
6 DSR DO2 Data-Set-Ready Connected to DCD (pin1)
7RTS /
CMD DI1 Request-to-Send /
Command Mode Provides RTS flow control or enables Command Mode
8CTS DO1 Clear-to-Send Provides CTS flow control
9 RI - Ring Indicator Optional power input that is connected internally to the
positive lead of the front power connector
Figure2‐01.
RS‐232DIPSwitchSettings
DIPSwitchsettingsarereadandapplied
onlywhilepowering‐on.
Figure2‐02.
PinsusedonthefemaleRS‐232(DB‐9)
SerialConnector

9XCite™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc. 8
2 .1 .2 . W iring Dia gram s
Figure2‐03. RS‐232DTEDevice(maleDB‐9connector)wiredtoaDCERFmodem(femaleDB‐9)
Figure2‐04. DCERFmodem(femaleDB‐9connector)wiredtoanRS‐232DCEDevice(maleDB‐9)
Sa m p le W ir e le ss Co nn ect ion : D TE < - - > D CE DCE < - - > DCE
Figure2‐05. TypicalwirelesslinkbetweenDTEandDCEdevices

9XCite™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc. 9
2 .2 . RS- 4 8 5 ( 2 - w ire) Operat ion
2 .2 .1 . DI P Sw it ch Sett in gs a nd Pin Signals
Not e: Refer t o t he figures in t he “ RS- 4 85 / 4 22 Conn ect ion Guidelin es” sect ion for RJ- 4 5 con nect or
pin designat ions used in RS- 485/ 422 environm ent s.
2 .2 .2 . W iring Dia gram
Figure2‐09. XCiteRFModeminanRS‐485(2‐wire)half‐duplexenvironment
Table2‐02. RS‐485(2‐wirehalf‐duplex)signalsandtheirimplementationsontheXCiteRFModem
DB-9 Pin RS-485 Name Description Implementation
2 T/R- (TRA) Negative Data Line Transmit serial data to and from the RF modem
5 GND Ground Signal Ground
8 T/R+ (TRB) Positive Data Line Transmit serial data to and from the RF modem
9PWR Power Optional power input that is connected internally
to the front power connector
1, 3, 4, 6, 7 not used
Figure2‐06.
RS‐485(2‐wire)Half‐duplex
DIPSwitchSettings
Figure2‐07.
PinsusedonthefemaleRS‐232(DB‐9)
SerialConnector
Figure2‐08.
RS‐485(2‐wire)w/Termination(optional)
Terminationisthe120ΩresistorbetweenT+andT‐.
DIPSwitchsettingsarereadandapplied
onlywhilepowering‐on.

9XCite™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc. 10
2 .3 . RS- 4 8 5 ( 4 - w ire) & RS- 4 2 2 Oper at ion
2 .3 .1 . DI P Sw it ch Sett in gs a nd Pin Signals
2 .3 .2 . W iring Dia gram s
Figure2‐13. XCiteRFModeminanRS‐485(4‐wire)environment
Table2‐03. RS‐485/422(4‐wire)SignalsandtheirimplementationsontheXCiteRFModem
DB-9 Pin RS-485/422
Name Description Implementation
2T-(TA)
Transmit Negative
Data Line Serial data sent from the RF modem
3R-(RA)
Receive Negative
Data Line Serial data received by the RF modem
5 GND Signal Ground Ground
7 R+ (RB) Receive Positive
Data Line Serial data received by the RF modem
8T+(TB)
Transmit Positive
Data Line Serial data sent from the RF modem
9PWR Power Optional power input that is connected internally
to the front power connector
1, 4, 6 not used
Figure2‐10.
RS‐485(2‐wire)Half‐duplex
DIPSwitchSettings
Figure2‐11.
PinsusedonthefemaleRS‐232(DB‐9)
SerialConnector
Figure2‐12.
RS‐485(2‐wire)w/Termination(optional)
Terminationisthe120ΩresistorbetweenT+andT‐.
DIPSwitchsettingsarereadandapplied
onlywhilepowering‐on.

9XCite™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc. 11
Figure2‐14. XCiteRFModeminanRS‐422environment
RS- 4 8 5 / 4 2 2 Conn ect ion Guidelines
The RS- 485/ 42 2 pr ot ocol pr ov ides a solut ion for wir ed com m u nicat ions t hat can t oler at e h igh
noise and push signals over long cable lengths. RS- 485/ 4 22 signals can com m u nicat e as far as
400 0 f eet ( 12 00 m ) . RS- 23 2 sign als ar e suit able for cab le dist an ces up t o 10 0 f eet ( 3 0. 5 m ) .
RS- 485 offer s m ulti- drop capability in w hich up t o 32 nodes can be connected. The RS- 422 prot o-
col is used for point- t o- point com m unicat ions.
Su gg est io ns f or in te gr a t in g t h e X Cit e RF Modem w it h t he RS- 4 8 5 / 4 2 2 pr ot ocol:
Figure2‐15. MaleDB‐9toRJ‐45Adapter(yellow)
Figure2‐16. FemaleDB‐9toRJ‐45Adapter(green)
An XCite RS-232/485 RF Modem ‘Accessories Kit’ is available that includes connectors that facilitate
RS-485/422 and other serial communications.
1. When using Ethernet twisted pair cabling: Select wires so that T+ and T- are connect ed to
each w ir e in a t wist ed pair. Lik ew ise, select w ires so t hat R+ and R- are connect ed t o a
t w ist ed pair. ( For ex am ple, t ie t he green and whit e/ green w ires t o T+ and T- .)
2. For st raight - thr ou gh Et her net cable ( not cr oss- ov er cable) - The follow in g w ir ing pat t ern
works well: Pin3 t o T+ , Pin4 to R+ , Pin5 t o R- , Pin6 t o T-
3. Note that the connect ing cable only requires 4 wires ( ev en t hough there are 8 wires).
4. When usin g ph on e cablin g ( RJ- 11 ) - Pin2 in the cable m aps to Pin3 on opposit e end of
cable and Pin1 m aps t o Pin4 respect ively.

9XCite‐PKG‐R™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc. 12
3.RFModemOperation
3 .1 . Se rial Com m unica t ions
3 .1 .1 . RS- 2 3 2 a nd RS- 4 8 5 / 4 2 2 Dat a Flow
The XCit e RF Mod em can enable a host d ev ice t o com m u nicat e w ir elessly. To t ransm it , t he host
device sim ply sends serial dat a to the XCit e RF Modem pins. The RF m odem t hen converts t he dat a
int o FCC- approved RF dat a. Once t ransm it ted, t he RF dat a can be detected by receiving XCite RF
Modem s, checked for integrity and t hen sent to a receiving device.
Figure3‐01. DataFlowinRS‐232andRS‐485/422environments.
(Low‐assertedsignalsdistinguishedwithahorizontallineoversignalname.)
3 .1 .2 . Se r ia l Dat a
Dat a ent ers the Max St ream RF m odem through the DI Pin as an asynchr onous serial signal. The
signal should idle high when no dat a is being t ransm it ted.
The UART perform s t asks ( such as tim ing and par it y check ing) needed for com m unicat ion. Serial
com m unicat ion consist s of t wo UARTs which m ust be configured w ith com patible param et er s
( Baud rate, parity, star t bit s, stop bits, dat a bit s) to have successfu l com m u nicat ion . Each dat a
packet consists of a st art bit ( low ), 8 dat a b it s ( least sign ifican t b it first) and a st op bit ( high) . The
follow ing figur e illust rat es t he ser ial bit pat t ern of dat a passing t hr ough t he m odem .
Figure3‐02. Serial(UART)datapacket0x1F(decimalʺ31ʺ)astransmittedthroughtheXCiteModule
DataFormatis8‐N‐1(8bits‐NoParity‐1StopBit)
I n t he exam ple above, the MaxSt ream RF m odem t ransfer 8 bit s ov er -the- air [ Select able using BI
( Nu m ber of Bit s) Param et er ] . St ar t and st op bit s of t he UART signal ar e not t ran sm it t ed over - t he-
air, but are regenerated by t he r eceiving m odem

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3 .2 . M ode s of Op er at ion
XCit e RF Modem s operat e in five m odes.
Figure3‐03. ModesofOperation
3 .2 .1 . I dle M ode
When not r eceiv ing or t ransm it t ing d at a, t h e RF m odem is in I dle Mode. The m odem shift s int o t he
ot her m odes of operat ion under t he follow ing condit ions:
• Tran sm it Mode ( Ser ial dat a is received in the DI Buffer)
• Receive Mode ( Valid RF dat a is r eceiv ed t h rough t he an t en na)
• Sleep Mod e ( Sleep Mode condit ion is m et )
• Com m and Mode ( Com m and Mode Sequence is issued)
3 .2 .2 . Tr a n sm it M ode
When the fir st byte of ser ial dat a com es t hrough t he DI Pin and arrives in t he DI Buffer, t he
m od em t r an sit ions int o Tran sm it Mode. Once in Tran sm it Mode, t h e m odem in it ializes a com m uni-
cat ions channel. During channel initialization, incom ing ser ial dat a accum ulat es in t he DI buffer.
Aft er t he channel is init ialized, data in the DI buffer is grouped int o packet s ( up t o 64 byt es in each
packet ) and is t ransm it ted. The m odem cont inues t o transm it dat a packet s unt il t he DI buffer is
em pt y. Once transm ission is finished, t he m odem r et ur ns to I dle Mode. This progression is show n
below:
Figure3‐04. Transmissionofdata

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3 .2 .3 . Receive M ode
I f a m odem d et ect s RF t r an sm it t ed dat a w hile operat ing in I dle Mode, it t ransit ions int o Receive
Mode t o st ar t receivin g pack et s. On ce a packet is r eceiv ed, it goes t hr ou gh t he r eceiv ing- en d of a
CRC ( cy clic redu ndancy check ) t o ensur e t hat t he dat a was t ransm it t ed w it h out er ror. I f t h e CRC
dat a bit s on t he incom ing packet are invalid, the packet is discar ded. I f t he CRC is valid, t he packet
is placed t he DO Buffer. This process is shown in t he figure below:
Figure3‐05. ReceiveModeDataFlow
The m odem ret urns t o I dle Mode aft er valid data is n o l on g er d et ect ed o r on ce an er r o r is d et e ct ed
in t he received dat a. I f serial dat a-to- t ransm it is stored in the DI buffer w hile t he m odem is giv ing
precedence t o Receive Mode, the dat a will be t ransm it ted aft er t he m odem finishes receiving dat a
and r et ur ns to I dle Mode.

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3 .2 .4 . Sle e p Modes
Sof t w a re Sl ee p
Sleep Modes en ab le t h e m odem t o ent er st at es of low- pow er con sum pt ion wh en n ot in use. Th ree
soft ware Sleep Modes are support ed:
• Pin Sleep ( Host Con t rolled)
• Serial Port Sleep ( Wake on Serial Por t act ivit y)
• Cyclic Sleep ( Wake on RF act iv it y )
I n order t o ent er Sleep Mode, one of t he following condit ions m u st be m et ( in addit ion t o t h e
m odem having a non- zero SM param et er value) :
Once in Sleep Mode, t he radio m odem does not t ransm it or receive dat a unt il it first ret urns t o I dle
Mode. The r et ur n int o I dle Mode is t riggered by t he de- assert ion of the Sleep pin or the ar rival of a
ser ial byt e thr ough Dat a I n pin.
The SM ( Sleep Mode) com m and is cent ral t o sett ing all Sleep Mode configurations. By default,
Sleep Mod es ar e disabled ( SM = 0 ) and t h e m odem r em ain s in I dle/ Receiv e Mode. When in t his
st ate, t he m odem rem ains const ant ly r eady to respond t o serial or RF act ivity.
Pin Sle ep ( SM = 1 )
• Pin/ Host- cont rolled
< Lowest Pow er Configurat ion> I n order to achieve t his low - pow er st at e, Pin 2 m ust be assert ed
( high) . The m odem rem ains in Pin Sleep unt il the Sleep pin is de-asser ted. The m odem will com -
plet e a t ransm ission or recept ion before activat ing Pin Sleep.
Aft er enabling Pin Sleep ( SM (Sleep Mode) Param et er = 1 ) , Pin 2 cont rols w het her t he XCit e Mod-
ule is act ive or in Sleep Mode. When Pin 2 is asser t ed ( high ) , t h e m odem t r ansit ions t o Sleep Mode
and r em ains in it s low est power- consum ing st ate u nt il t he Sleep pin is de- asser t ed . Th e XCit e
Module requires 40m s t o t ransit ion fr om Sleep Mode t o I dle Mode. Pin 2 is only act ive if t he
m odem is set up t o operat e in t his m ode; ot herw ise t he pin is ignored. Once in Pin Sleep Mode,
CTS is de- asser t ed ( high) , indicat ing t h at dat a should not be sent t o the m odem . The PWR pin is
also de- assert ed ( low ) when t he m odem is in Pin Sleep Mode
Note: The modem will complete a transmission or reception before activating Pin Sleep.
Seria l Por t Sle ep ( SM = 2 )
• Wake on serial port act ivit y
Serial Port Sleep is a Sleep Mode set ting in which t he modem ru ns in a low pow er st at e unt il dat a
is detect ed on the DI pin.
When Ser ial Por t Sleep is enabled, t he m odem goes into Sleep Mode aft er a u ser- defined per iod of
inactivit y ( no transm itting or receiving of data) . This period of t im e is det er m in ed by ST ( Tim e
befor e Sleep) Com m and. The m odem ret urns to I dle Mode once a character is received through
the DI pin.
Cyclic Slee p ( SM = 3 - 8 )
Cyclic Sleep is t he Sleep Mode set ting in w hich t he XCit e Module enters int o a low pow er st ate and
aw ak en s per iodically t o det er m in e if any t r an sm ission s ar e bein g sent .
When Cyclic Sleep set t ings ar e enabled, t he XCit e Module goes int o Sleep Mode after a user-
def in ed per iod of inact iv it y ( n o t ran sm ission or r ecept ion on t he RF ch annel) . The user - def ined
per iod is det erm ined by ST Param et er. [ See ST ( Tim e befor e Sleep) Par am et er ]
While t he m odem is in a low- power st at e, CTS de- asser t ed ( h igh ) t o in dicat e t h at dat a shou ld not
be sent t o t he m odem during t his t im e. When t he m odem awak ens t o listen for dat a, CTS is
asser t ed and any dat a received on t he DI Pin is t ransm it t ed . The PWR pin is also de- asser t ed ( low )
w hen t he m odem is in Cy clic Sleep Mod e. Th ese pins ar e asser t ed each t im e t h e m odem cy cles
1. Th e m odem is idle ( no d at a t r an sm ission or recept ion) for t he am ount of tim e defined by
t he ST ( Tim e befor e Sleep) param et er.
2. SLEEP pin is assert ed.

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int o I dle Mode t o list en for valid dat a packets and de-assert s when the m odem ret ur ns to Sleep
Mode.
The m odem rem ains in Sleep Mode for a user- defined period of t im e ranging from 0.5 seconds to
16 seconds ( SM Param et ers 3 t hr oug h 8 ) . Af t er t h is int er val of t im e, t he m odem r et ur ns t o I dle
Mode and listens for a valid dat a pack et for 100 m s. I f t he m odem does not det ect v alid dat a ( on
any fr eq uency ) , t h e m od em r et u rn s t o Sleep Mode. I f valid data is det ect ed, t h e m od em t r an si-
tions int o Receive Mode and receives t he incom ing pack et s. The m odem t hen r et urns to Sleep
Mode aft er a Period of inact ivit y t hat is det erm ined by ST "Tim e before Sleep" Param et er.
The m odem can also be con fig ur ed t o Wak e- u p fr om cyclic sleep when t he SLEEP pin is de-
asser t ed ( low ) . To con figur e a m od em t o oper at e in t his m an ner, PW ( Pin Wak e- u p) Com m and
m u st be issu ed . On ce t he Sleep pin is de- assert ed, t he m odem is forced int o I dle Mode and can
begin t ransm it t ing or receiving dat a. I t r em ain s act ive unt il no dat a is det ect ed for the period of
t im e specified by t he ST param et er, at which point it resum es it s low- power cyclic st at e.
Note: The cyclic interval time defined by SM (Sleep Mode) Command must be shorter than the interval
time defined by LH ("Wake-up Initializer Timer") Command. For example: If SM=4 (Cyclic 1.0 second
sleep), the LH Parameter should equal 0xB ("1.1" seconds). With these parameters set, there is no risk
of the receiving modem being asleep for the duration of the wake-up initializer transmission. The fol-
lowing section "Cyclic Scanning" explains in further detail the relationship between "Cyclic Sleep" and
"Wake-up Initializer Timer"
Cyclic Scannin g. Each RF t ransm ission consist s of a wake- up init ializer and payload data. The
wake- up init ializer cont ain s init ializat ion in for m at ion an d all receiv ing m odem s m ust Wake- up dur-
ing t h e w ak e- u p init ializer por t ion of dat a t ransm ission in or der t o sy nchr on ize w it h t h e t r ansm it t er
and r eceive the dat a.
The cyclic interval time defined by the SM (Sleep Mode) command must be shorter than the interval
time defined by LH (Wake-up Initializer Timer) command.
Figure3‐06. CorrectConfiguration(LH>SM):
Thelengthofthewake‐upinitializerexceedsthetimeintervalofCyclicSleep.Thereceiveris
guaranteedtodetectthewake‐upinitializerandreceivetheaccompanyingpayloaddata.

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3 .2 .5 . Com m a nd M ode
AT Com m and Mode pr ov ides access t o AT- Set t able param et er s. Th ese param et ers ext end flex ibil-
it y in configur ing m odem s t o fit specific design crit er ia such as net wor king m odem s. Not all of t he
param et ers in the XCit e Module can be adj ust ed using AT Com m ands.
AT Com m a nd M ode
To En t e r AT Com m a nd M od e:
Default AT Com m and Mode Sequence ( f or t ransit ion t o Com m and Mode) :
• No characters sent for one second [ refer to the BT ( Guard Tim e Before) Com m and]
• I nput thr ee plus characters ( “ + + + ” ) within one second
[ refer t o t he CC ( Com m and Sequence Charact er ) Com m and.]
• No characters sent for one second [ refer to the AT ( Guard Tim e Aft er) Com m and.]
All of t he par am et er v alues in t he sequ ence can be m odified t o reflect user preferences.
To Send AT Com m a nds:
Figure3‐07.SyntaxforsendingATCommands
To read a parameter value stored in the modem register, leave the parameter field blank.
The pr eceding ex am ple would change t he m odem ’s Dest inat ion Address to " 0x1F". To st ore t he
new v alue t o n on - volat ile ( lon g t er m ) m em or y, t h e Wr it e ( ATWR) com m and m u st subsequ ent ly be
sent befor e power ing off t he m odem .
Sy st e m Re sp on se . When a com m and is sent t o t he m odem , t he m odem will parse and execut e
t he com m an d. Upon successful execu t ion of a com m and, the m odem ret urns an “ OK” m essag e. I f
execut ion of a com mand result s in an er ror, t he m odem r et ur ns an “ ERROR” m essage.
To Ex it AT Com m a nd Mode :
For an example of programming the RF modem using AT Commands and descriptions of each config-
urable parameter, refer to the "RF Modem Configuration" chapter.
1. Send t he 3- charact er com m and sequence " + + + " and observe guard t im es befor e and aft er
t he com m and charact ers. [ refer t o ‘Default AT Com m an d Mode Sequence’ below.] The ‘Ter -
m in al’ t ab ( or ot her serial com m u nicat ions soft war e) of t h e X- CTU Soft ware can be used t o
enter the sequence.
[ OR]
2. Asser t ( low ) t h e CONFI G pin and t urn t he power going t o the RF m odem off and back on. To
ach iev e t h is r esult , sim u lt aneously pr ess t he Reset an d Conf ig sw it ches [ Figur e 1 - 02 ] ;
release t he Reset Swit ch; then aft er 1 second, release the Config Switch. The RF Modem
t hen ent er s AT Com m and Mode at the m odem 's default baud rat e
Send AT com m ands and param et ers using t he synt ax shown below.
1. I f no valid AT Com m ands are received w it hin t he t im e specified by CT (Com m and Mode
Tim eout ) Com m and, t he m odem aut om at ically ret ur ns t o I dle Mode.
[ OR]
2. Send ATCN ( Exit Com m and Mode) Com m and.

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4.RFModemConfiguration
The following versions of t he XCite RF Modem are available:
• 9 00 MHz, 96 00 Baud ( RF dat a rat e) , Hop ping Channel Mode
• 900 MHz, 9600 Baud, Single Channel m ode
• 9 00 MHz, 38400 Baud, Hopping Channel m ode
• 9 00 MHz, 38400 Baud, Single Channel m ode
XCit e Modem s can operat e in bot h Single Channel and Hopping m odes. Mode is select able using
the " Function Set " dr opdown list of the " XCite Configurat ion" tab of the MaxSt ream - provided X-
CTU Softwar e.
The XCit e Module is shipped wit h a unique param et er set in it s m em or y. Param et er s w it hin t he set
ar e or ganized under t h e f ollow ing cat egor ies: AT Com m ands & Non-AT Set table Param et ers.
4 .1 . Com m and and Pa r am e t e r Type s
4 .1 .1 . AT Com m ands
AT Com m ands can be changed at any t im e by ent ering AT Com m and Mode and sending com mands
t o t he m odem .
AT Com m ands can be m odified using t he any of t he following m eans:
• X- CTU Sof t war e " Modem Configurat ion " t ab
• X- CTU Sof t war e " Term inal" t ab
• Ter m in al soft war e p rogr am ( such as " HyperTer m inal" )
• Microcont roller
4 .1 .2 . N on- AT Set t able Pa r am et e r s ( X- CTU Soft w ar e configur able only)
Non -AT Set t ab le Param et er s can only be adj ust ed u sin g t he Max St r eam - p rov ided X- CTU Soft war e.
To m od if y Non - AT Se t t ab le Par am et er, con n ect t he m od ule t o t h e ser ial com p or t of a PC ( in t er f ace
boar d is necessar y f or RS- 2 32 con nect ion ) an d m odify par am et er valu es t hr ou gh t he X- CTU Soft -
ware int erface. These param et ers enable f eat ur es t h at n eed t o be set befor e t he m odule i s used in
the field.
Non -AT Sett able Par am et ers can only be m odified using t he follow ing m eans:
• X- CTU Sof t war e " Modem Configurat ion " t ab

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4 .2 . Configur ation Softw ar e
X- CTU is a Max St ream - pr ov ided sof t war e pr ogr am used t o int erface w ith and configure Max-
St ream RF Modem s. The soft war e applicat ion is organized int o t he following four t abs:
• PC Set tings tab - Set up PC serial port s for int erfacing w it h an RF m odem
• Range Test t ab - Test the RF m odem 's range and m onit or packet s sent and receiv ed
• Ter m inal t ab - Set and read RF m odem param et er s using AT Com m ands
• Modem Configurat ion t ab - Set and r ead RF m odem param et er s
FigureB‐1. X‐CTUUserInterface(PCSettings,RangeTest,TerminalandModemConfigurationtabs)
NOTE: PC Setting values are visible at the bottom of the Range Test, Terminal and Modem Configura-
tion tabs. A shortcut for editing PC Setting values is available by clicking on any of the values.
I nst a lla t ion
Dou ble- click t h e " set up _X- CTU.exe" f ile and follow pr om p t s of t he in st allat ion scr een s. Th is file is
locat ed in t he 'software' folder of the MaxSt ream CD and also under the 'Downloads' section of the
following web page: ww w.m axst ream .net/ support/ downloads.php
Se t up
Se r ia l Co m m u nica t ion s Sof t w a re
A t erm inal pr ogram is built int o the X- CTU Soft war e. Ot her t er m inal program s such as "HyperTer -
m inal" can also be used t o configure m odem s and m onitor com m unicat ions. When issuing AT
Com m an ds t hrough a t er m inal pr ogram int erface, use the following synt ax:
FigureB‐2. SyntaxforsendingATCommands
NOTE: To read a param et er value st ored in a regist er, leave t he param et er field blank .
The exam ple above issues t he DT ( Dest ination Address) com m and t o change destinat ion address
of the m odem t o " 0x1F". To save t he new value t o the m odem ’s non- volat ile m em or y, issue WR
( Writ e) com m and aft er m odifying param et ers.
To use t he X-CTU soft war e, a m odule assem bly ( An RF m odem m oun ted t o an int erface Boar d)
m ust be connect ed t o a ser ial por t of a PC.
NOTE: Failure t o ent er AT Com m and Mode is m ost com m only due t o baud r at e m ism at ch . Th e
int er face data rat e and parity setting s of t h e ser ial p or t ( " PC Set t in gs" t ab ) m u st m at ch t h ose of
the m odule (BD (Baud Rat e) and NB ( Par ity) param et ers r espectively) .