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XStream™

OEM

RF

Module

–

Product

Manual

v5.x00

[2006.02.24]

4.3.

Acknowledged Communications

4.3.1.

Acknowledged Mode

Characteristics

: Reliable delivery through positive acknowledgements for each packet

Throughput, latency and jitter vary depending on the quality of the channel
and the strength of the signal.

Recommended Use

: Acknowledge Mode configuration is appropriate when reliable delivery is

required between modules. If messages are smaller than 256 bytes, use RB and RO commands
to align RF packets with application packets.

Required Parameter Values (TX Module)

: RR (Retries) >= 1

Related Commands

: Networking (DT, MK, RR), Serial Interfacing (PK, RN, TT, RO, RB)

Table

4

‐

04.

Sample

Network

Profile

Module

Parameter Settings

(assume default values for parameters not listed)

All

ATRR A

[set number of Retries to 0x0A]

ATRN 5

[set number of Delay Slots to 5]

Acknowledged Mode Connection Sequence

Figure

4

‐

06.

Acknowledged

Mode

State

Diagram

Æ

After sending a packet while
in Acknowledged Mode, the
transmitting module listens f
an ACK (ack
it receives the ACK, it will
either send a subsequent
packet (if more transmit data
is pending), or will wai
exactly RN random delay
before allowing another
transmission (if no more
is pending for transmission).

If the transmitting module

or

nowledgement). If

t for

slots

data

l

d

ns

N is

t

have

nnot return to RF transmit (or retransmit) mode as long as it is

receiving RF data.

does not receive the ACK
within the allotted time, it wil
retransmit the packet with a
new RF initializer following the
ACK slot. There is no delay
between the first ACK slot an
the first retransmission.
Subsequent retransmissio
incur a delay of a random
number of delay slots,
between 0 and RN. If R
set to 0 on the transmitting
module, there are never any
back-off delays between
retransmissions. Note tha
during back-off delays, the
transmitting module will go
into Idle Mode and may
receive RF data. This can
the effect of increasing the
back-off delay, as the radio ca

©

2006

MaxStream,

Inc.

Confidential

and

Proprietary

41

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electronic components distributor

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Содержание XStream X09-001 Series

Страница 1: ...m OEM RF Module Part Numbers X09 001 X24 009 XH9 001 X09 009 X24 019 XH9 009 X09 019 XH9 019 Reliable 900 MHz 2 4 GHz OEM RF Modules by MaxStream Inc 355 South 520 West Suite 180 Lindon UT 84042 Phone...

Страница 2: ...e contents of this manual may not be transmitted or reproduced in any form or by any means without the written permission of MaxStream Inc XStream is a registered trademark of MaxStream Inc Technical...

Страница 3: ...Addressing 36 4 1 1 Address Recognition 36 4 2 Basic Communications 37 4 2 1 Streaming Mode Default 37 4 2 2 Repeater Mode 38 4 3 Acknowledged Communications 41 4 3 1 Acknowledged Mode 41 4 3 2 Multi...

Страница 4: ...small form factor easily designed into a wide range of data radio systems Software selectable serial interfacing rates MODBUS CTS RTS DTR DCD more I O Support Support for multiple data formats parity...

Страница 5: ...nt 50 mA 80 mA Transmit Current 140 mA 150 mA Power Down Current 26 A 26 A General Frequency Range 902 928 MHz 2 4000 2 4835 GHz Spread Spectrum Frequency Hopping Wide band FM modulator Network Topolo...

Страница 6: ...end flow control By default this pin is not used To configure this pin to regulate the flow of serial data exiting the module refer to the Serial Communications p9 and RT Command p31 sections 5 DI2 CM...

Страница 7: ...03 and Figure 1 04 Symbol Description 19200 baud rate 32 byte packet 19200 timing B number of bytes 9600 baud rate 32 byte packet 9600 timing B number of bytes TTX Latency from the time data is trans...

Страница 8: ...0 5 V VOL Output Low Voltage IOL 20 mA Vcc 5V 0 7 0 5 V VOH Output High Voltage IOH 20 mA Vcc 5V 4 0 2 0 V IIL Input Leakage Current I O Pin Vcc 5 5V pin low absolute value 3 A IIH Input Leakage Curre...

Страница 9: ...Data enters the XStream Module through the DI pin pin 4 as an asynchronous serial signal The signal should idle high when no data is being transmitted The UART performs tasks such as timing and parity...

Страница 10: ...d in the DI Buffer The data in the DI buffer will be transmitted over the air when the module no longer detects RF data in the network Hardware Flow Control When the DI buffer is 17 bytes away from be...

Страница 11: ...ization threshold is ignored 2 At least one character has been received in the DI buffer pending for RF transmission and RO time has been observed on the UART refer to RO Packetization Timeout Command...

Страница 12: ...to the FH LH HT and SM Commands for more information The length of the wake up initializer should be longer than the length of time remote modules are in cyclic sleep Header The header contains networ...

Страница 13: ...d period of time See ST Time before Sleep Command 2 DI3 pin 2 is asserted only for Pin Sleep option In Sleep Mode the module will not transmit or receive data until the module first transitions to Idl...

Страница 14: ...d period is determined by ST Time before Sleep Command While the module is in Cyclic Sleep Mode is de asserted high to indicate that data should not be sent to the module during this time When the mod...

Страница 15: ...orrect Configuration LH SM 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...

Страница 16: ...nt for one second AT Guard Time After parameter 0x0A To Send AT Commands Send AT commands and parameters using the syntax shown below Figure 2 10 Syntax for sending AT Commands The preceding example w...

Страница 17: ...st be asserted in order to send binary commands to an XStream Module CMD can be asserted to recognize commands anytime during transmission or reception of data A minimum time delay of 100 s after the...

Страница 18: ...module PC com port settings must match the baud parity stop bit parameters stored in the module Use the PC Settings tab to configure PC com port settings to match module parameter values 3 1 2 Binary...

Страница 19: ...ing Channel 0 6 Networking Security 1 0 HT 0x03 3d Time before Wake up Initializer 0 0xFFFF x 100 msec Sleep Low Power 2 0xFFFF ID v4 2B 0x27 39d Modem VID User settable 0x10 0x7FFF Read only 0x8000 0...

Страница 20: ...006 MaxStream Inc Confidential and Proprietary 20 Most applications will require one of the seven standard baud rates however non standard baud rates are also supported Note If the interface data rate...

Страница 21: ...umber of bytes returned 2 Related Commands AT Guard Time After CC Command Sequence Character Refer to the AT Commands section p16 to view the default AT Command Mode sequence CB Connection Duration Ti...

Страница 22: ...TCF Binary Command 0x35 53 decimal Parameter Range 0 0xFFFF Default Parameter Value 0 Number of bytes returned 2 Minimum Firmware Version Required 4 30 Diagnostics Set Read the number of times the bas...

Страница 23: ...ow control control the TX enable signal for RS 485 or RS 422 operations or set the default level for the I O line passing function By default DO2 provides RS 232 Clear to Send flow control CT Command...

Страница 24: ...but will not send any of the data out their serial ports AT Command ATDT Binary Command 0x00 Parameter Range 0 0xFFFF Default Parameter Value 0 Number of bytes returned 2 Related Commands HP Hopping...

Страница 25: ...DO buffer size minus 0x11 bytes Default Parameter Value Receiving module DO Buffer size minus 0x11 Number of bytes returned 2 Minimum Firmware Version Required 4 27B GD Receive Good Count Command Dia...

Страница 26: ...yclic 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...

Страница 27: ...connect Minimum Firmware Version Required 4 30 Networking Security The MD command is used to select read the RF Mode Peer to peer Multi Stream or Repeater Modes of the module Multi Streaming Mode enab...

Страница 28: ...r up to Idle Mode 1 Power up to AT Command Mode Default Parameter Value 0 Number of bytes returned 1 Minimum Firmware Version Required 4 22 Command Mode Options PC Command allows the module to power u...

Страница 29: ...will continue in streaming manner until there is no data left in the DI Buffer UART receive buffer Maximum value equals the current value of PK Parameter up to 0x100 HEX 800 decimal Default Parameter...

Страница 30: ...o RF packets are received the PWM output will be set low 0 percent PWM until another RF packet is received The PWM output will also be set low at power up A parameter value of 0xFF permanently enables...

Страница 31: ...ictate the behavior of the DI2 CMD line RT Command must be issued to enable flow control or binary programming RZ DI Buffer Size Command AT Command ATRZ Binary Command 0x2C 44 decimal Parameter Range...

Страница 32: ...ng data after the wake up initializer runs its duration Otherwise it returns to Sleep Mode and continues to cycle in and out of inactivity until the Wake up Initializer is detected If a Cyclic Sleep s...

Страница 33: ...ived Synchronization information is not re sent unless transmission stops for more than 2 seconds This command allows significant savings in packet transmission time Warning Not recommended for use in...

Страница 34: ...mal Parameter Range 0 0xFFFF bytes Default Parameter Value 0xFFFF 65535d Number of bytes returned 2 Related Commands RN Delay Slots Minimum Firmware Version Required 4 22 VR Firmware Version Command A...

Страница 35: ...0 Base ATMY 0 set Source Address to 0x00 ATDT FFFF set Destination Address to 0xFFFF ATRR 3 set number of Retries to 3 Sample Network Profile Acknowledged Communications Remotes ATAM auto set MY Sourc...

Страница 36: ...Figure 4 02 Local Packets vs Global Packets Transmitting Module TX_DT Transmitter Destination Address TX_MK Transmitter Address Mask Note When TX_DT 0xFFFF default RF packets are global and are receiv...

Страница 37: ...After transmission begins the TX event will continue uninterrupted until the DI buffer is empty or the streaming limit TT Command is reached As with the first packet the payload of each subsequent pac...

Страница 38: ...easing throughput Required Parameter Values TX Module MD 3 or 4 MY unique value can be accomplished by issuing the AM Auto set MY and WR Write commands to all modules in the network Related Commands N...

Страница 39: ...ique addresses to each module in the network Algorithm details Packet ID PID is composed of transmitting module MY address and packet serial number Incoming packets with a PID already found in the PID...

Страница 40: ...0 MD 0x3C 60d RF Mode 3 4 1 0 MY 0x2A 42d Source Address 0 0xFFFF 2 0xFFFF RN 0x19 25d Delay Slots 0 0xFF slots 1 0 WR 0x08 8d Write Bandwidth Considerations Using broadcast repeaters in a network red...

Страница 41: ...packet while in Acknowledged Mode the transmitting module listens f an ACK ack it receives the ACK it will either send a subsequent packet if more transmit data is pending or will wai exactly RN rand...

Страница 42: ...he TT parameter is reached the transmitting module will force a random delay of 1 to RN delay slots exactly 1 delay slot if RN is zero Each packet is counted only once toward TT no matter how many tim...

Страница 43: ...ction is a bi directional connection that can only be established when in Multi g the igure 4 07 Sample Connection Sequence Diagram In the connection sequence above an exclusive connection is first g...

Страница 44: ...o and received from the connected remote module If an error is returned the module stays in AT Command Mode If a base is connected to a remote when the DT command is executed the current connection is...

Страница 45: ...e parameter to 1 or 2 o meter values are automatically modified to support the mode For example when the MD meter is changed to 1 or 2 the RR parameter is changed to 0x0A hex The modification occurs i...

Страница 46: ...sleep can also be used with a remote module A module will not be allowed while a connection is active Usually the connection on DI3 DR 4 should also be enabled so that a connection is established on w...

Страница 47: ...15 107 and 15 109 before declaring compliance of their final product to Part 15 of the FCC Rules IMPORTANT The XStream OEM RF Modules have been certified for remote and base radio applications If the...

Страница 48: ...y with FCC Section 15 203 unique antenna connectors and Section 15 247 emissions RF Exposure WARNING This equipment is approved only for mobile and base station transmitting devices separation distanc...

Страница 49: ...facturer Part Number Type Gain Application Min Separation Distance Yagi 6 dBi Fixed 2 m Yagi 8 8 dBi Fixed 2 m Yagi 9 dBi Fixed 2 m Yagi 10 dBi Fixed 2 m Yagi 11 dBi Fixed 2 m Yagi 12 dBi Fixed 2 m Ya...

Страница 50: ...ht CE marking as sh ow See the R TTE Directive le 12 and An II for more ation Figure A 04 CE Lab on OEM ent Restrictions ust be aff visible the OE Figure A 03 beling Requireme 2006 MaxStream Inc Confi...

Страница 51: ...n Application Min Separation Distance MaxStream A24 HABMM P6I Dipole 2 1 dBi Fixed Mobile 20cm MaxStream A24 HB 20cm MM P6I Dipole 2 1 dBi Fixed Mobile MaxStream A24 HABSM Dipole 2 1 dBi Fixed Mobile...

Страница 52: ...le t nnects to xStream o JD2D2 CDN A other DCE 9 device NULL Modem Adapter 1 Used to bypass radios to verify serial cabling is functioning properly JD3D3 CDN A female to female Male DB 9 to RJ 45 Adap...

Страница 53: ...In cases where AT Commands should n e sent each t The Configuration Switch provides an alternate way to enter AT Command Mode To enter AT Command Mode at the module s default baud rate hold the Config...

Страница 54: ...isable lated d and AT Commands are not sent to the Module If Config Switch is pressed Processor is disabled and Module enters into AT Command Mode If J7 is NOT populated and Config Switch is NOT press...

Страница 55: ...Part Number JD3D3 CDN A Gray DB 9 F The modem adapter is rial cabling is fu ale to female NULL modem adapter in place of a pair of module odule and test the connection without radio modules in the co...

Страница 56: ...M The Micro Miniature Connector MMCX is a good solution for high volume price sensitive applications The small size and snap on connection make it suitable for attaching an external An mounted antenn...

Страница 57: ...Data Carrier Detect Connected to DSR pin6 2 RXD DO Received Data Serial data exiting the Module Assembly to host 3 TXD DI Transmitted Data Serial data entering into the Module Assembly from host 4 DT...

Страница 58: ...006 MaxStream Inc Confidential and Proprietary 58 Wi ng Diagram DCE Module Assembly to an RS 232 DCE Device ri Figure B 11 XStream Module Assembly female connector wired to an RS 232 DTE male connecto...

Страница 59: ...B 022 Figure B 023 p45 for RJ 45 connecto RS 485 422 environments Table B 06 RS 485 2 wire half duplex Signals and their implementations on the XStream Module Assembly DB 9 Pin RS 485 Name Descriptio...

Страница 60: ...d applied only while powering on DB 9 Pin RS 485 422 Name Description Implementation 2 T TA Transmit Negative Serial data sent from the XStream Module Assembly Data Line 3 R Receive Negative Serial da...

Страница 61: ...point communications 1 When using Ethern twisted pair cabling Select wires so that T and T are connected to et each wire lect wires so that R ected to a in a twisted pair Likewise se and R are conn t...

Страница 62: ...ds sectio the following web page http www maxstream net helpdesk download php Setup To use the X CTU software a module assembly XStream Module mounted to a MaxStream XIB R Interface Board must be conn...

Страница 63: ...ND MAXSTREAM SPECIFICALLY ISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE IN NO EVENT SHALL MAXSTREAM ITS SUPPLIERS OR LICENSORS BE LIABLE FOR AMAGES IN EXCESS OF THE PU...

Страница 64: ...Modem sold Please use the following resources for additional support Documentation http www maxstream net helpdesk download php ada Live Chat www maxstream net Technical Support Phone 866 765 9885 tol...

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