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STI Engineering rfi-9256 User Manual

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RFI-9256 RADIO MODEM
USER MANUAL

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  • Page 1 Ph 02 9481 7420 Fax 02 9481 7267 esis.enq@esis.com.au RFI-9256 RADIO MODEM USER MANUAL...
  • Page 2 DISCLAIMER © 2017 STI Engineering Pty Ltd. All rights reserved. STI Engineering reserves the right to make improvements on the product in this manual at any time without notice. No part of this manual may be produced, copied, translated, or transmitted in any form or by any means without the written permission of STI Engineering.

  • Page 3: Table Of Contents

    2.5 Cruise Control ..................................8 3. Installation ..................................... 9 3.1 Radio Frequency Hazard Information ............................9 3.2 OEM Handling Procedure ................................ 9 3.3 RFI-9256 Location ................................... 9 3.4 Antenna Installation ................................10 4. Configuration ....................................11 4.1 User Interfaces ..................................11 4.2 Cruise Control ..................................
  • Page 4 C.2 S-Register Commands ................................91 C.3 ‘%’ Register Commands ................................ 99 C.4 Other Commands ................................... 99 C.5 Summary of Commands ................................. 99 Appendix D Factory Defaults ............................... 105 Appendix E Glossary ..................................107 RFI-9256 Radio Modem User Manual Page 4 of 109...

  • Page 5: Introduction

    Introduction 1. Introduction The RFI-9256 is a frequency-hopping spread spectrum (FHSS) radio modem operating in the international 900MHz ISM band. It has been type approved for operation in Australia (915-928MHz), New Zealand (920- 928MHz), and countries regulated by the FCC (902-928MHz).

  • Page 6: Quick Start Guide

    61) is used to power the radio and connect the 9256 to an external device. The cable has two RS-232 serial ports which are named Main and Auxiliary. The Auxiliary port is a multi-function interface which can be used for: RFI-9256 Radio Modem User Manual Page 6 of 109...
  • Page 7 Both the Main and Auxiliary ports are wired as RS232 DCE. The pin-out for the data and control lines is shown in Figure 27. Typically the Auxiliary port is used to configure the radio and monitoring diagnostic information, while the Main port is used to transfer data. RFI-9256 Radio Modem User Manual Page 7 of 109...

  • Page 8: Power Supply And Protection

    Cruise Control communicates with an attached radio modem over a PC serial port. The serial port configuration must match the radio’s configuration. When a radio is supplied from STI Engineering, serial port settings are defaulted to 19200, 8N1, with no flow control.

  • Page 9: Installation

    Always have the power supply unplugged and powered off when inserting and removing connectors. STI Engineering assumes no responsibility that results from failure to follow instructions or failure to observe safety precautions.

  • Page 10: Antenna Installation

    The use of external antennas subjects the transceiver to greater exposure to direct lightning strikes. STI Engineering recommends use of lightning surge arrestors to protect all antennas and attached equipment against lighting strike. RFI-9256 Radio Modem User Manual Page 10 of 109...

  • Page 11: Configuration

    This menu interface can be accessed through a terminal emulation program, such as RFI InTerm. 3. AT command interface: The AT command interface is used to configure and control to the RFI-9256 through ASCII Hayes attention commands. This can be used to adjust the radio’s configuration, read the radio’s configuration, and read performance parameters.
  • Page 12 It is recommended that only local devices have their configuration loaded from file, as when performing this operation on a remote device only those items that can be edited remotely will be updated. RFI-9256 Radio Modem User Manual Page 12 of 109...

  • Page 13: Terminal Menu Interface

    The full terminal menu reference is provided in Appendix B on page 68. 4.4 Hayes AT Command Interface The RFI-9256 supports many Hayes compatible commands enabling the user to fully control and operate the radio, and in most cases emulate public switch telephone network (PSTN) modems.
  • Page 14 Whenever an AT command is executed a response code is generated. Response codes can be either strings, numbers, or be suppressed (not output to the serial port). The list of response codes generated by the RFI- 9256 is shown in Table 1. RFI-9256 Radio Modem User Manual Page 14 of 109...
  • Page 15 NO ANSWER An attempt was made to dial a remote unit but it could not be contacted Table 1: AT response codes generated by the RFI-9256 4.4.2 Configuring the Radio The radio uses s-registers to alter the configuration profile. Each s-register contains a decimal value, an ASCII character or an ASCII string.

  • Page 16: Front Panel Interface

    The front panel interface allows for real-time monitoring of radio parameters without the need for any external equipment. The front panel can also be used to enable the menu on the RFI-9256’s auxiliary port regardless of the current serial port configuration. The front panel is shown in Figure 5.
  • Page 17 When network link is green it shows that the unit can hear a remote radio that is on the same network and hopping pattern. Slave radios should show network link constantly, as master radios are constantly RFI-9256 Radio Modem User Manual Page 17 of 109...
  • Page 18 RF packet has been lost. It is acceptable, and expected, that some RF packets will be lost as the RFI-9256 operates in an industrial, scientific, and military band (ISM) where there is a potential for interference from other radios. A red flash of carrier detect does not mean user data has been discarded, as the RFI-9256 will retry any packet that is lost or corrupted during transmission.
  • Page 19 "Firmware CRC mismatch."  A framing, parity, overrun, or overflow occurs on either serial port: In this case the error is latched for 500ms before being cleared. RFI-9256 Radio Modem User Manual Page 19 of 109...

  • Page 20: Operation

    If the data cannot be transmitted over-the-air, it will be buffered until the transmitter is ready.  If the data terminal equipment (DTE) is not ready for data, the RFI-9256 can buffer that data until the DTE is ready. Main -> Serial Port 5.1.1 Configuration...
  • Page 21 Hayes dial-up mode.  Local RTS controls CTS/DCD: The line is active when the local radio’s RTS input line is active.  CTS/DCD Always ON: The line is always active. RFI-9256 Radio Modem User Manual Page 21 of 109...
  • Page 22 Note: When hardware flow control is enabled, the CTS line configuration is ignored. 5.1.3 Statistics Each serial port has associated with it a set of statistics that can be used to debug RFI-9256 applications. The serial port statistics are described in Table 6.

  • Page 23: Radio Operation

    The RFI-9256 is a master / slave based system. In any one radio network there is a single master and multiple slaves. The master may send messages to any slave, but the slaves may only send messages to the master.
  • Page 24 Combining this with the serial port interface described in section 5, an overall picture of the data path in the RFI-9256 radio can be obtained. This is shown for a master unit in Figure 8.
  • Page 25 DATA TIMING The RFI-9256 will change the inter-character and inter-packet timing of data that it transmits as all data received by the RFI-9256 is framed for transmission over the air. Consider the situation shown in Figure 10. Frame Time 20ms...

  • Page 26: Radio Parameters

    Main -> Radio ADDRESSING Each radio in a RFI-9256 network has a local address. The local address is a decimal number between 1 and 9999. When allocating addresses on an RFI-9256 network, the convention is to allocate the address 1000-9999 to the master and slaves, while reserving the addresses 10-99 to be allocated to any back-to-back repeaters.
  • Page 27 FRAME TIME The frame time is the amount of time that the RFI-9256 will spend on each channel in the hopping pattern. This is also referred to as the channel dwell time. The frame time can be adjusted to suit each application.
  • Page 28 If an RFI-9256 is given data to transmit to a slave that is non-existent, either due to a misconfigured destination address, the slave being out of range, or the slave unit being faulty, then it will transmit each frame the maximum number of retries.
  • Page 29 NOTE: Synchronisation should not be used when directional bias has been enabled on either unit. 5.2.3 Network Configuration A network of RFI-9256 radios will consist of one master, and one or more slaves. Multiple co-located masters are supported in the RFI-9256 system through three mechanisms: ...
  • Page 30 LATENCY REDUCTION Some systems will require a radio link that induces very low latency, usually where the RFI-9256 is being used to replace an existing wired system. There are a number of parameters that can be traded off in order to reduce latency.
  • Page 31 Modbus. Due to the TDD nature of the RFI-9256, simply passing this data into the radio can cause it to become disrupted as there is no guarantee that timing will be maintained over the air link (see section Data Timing on page 25).
  • Page 32 RSSI that the master is receiving from a particular slave. This is covered in Appendix B.6 on page 83. RF COMMUNICATIONS STATISTICS The RFI-9256 provides a number of communications statistics that can be used to debug a RFI-9256 system. These parameters are shown in Table 9. Statistic...

  • Page 33: Protocol Operation

    Instead of acknowledgements, the master will transmit each message a fixed number of times equal to the maximum retries. For this reason, the number of retries used in a broadcast network should be configured to between 1 and 5 in order to maintain a reasonable throughput. RFI-9256 Radio Modem User Manual Page 33 of 109...
  • Page 34 If the radio receives a character on the serial port while dialling is in progress it will immediately terminate NO CARRIER the connection attempt and send a response message. RFI-9256 Radio Modem User Manual Page 34 of 109...
  • Page 35 ANSWERING The RFI-9256 provides two options for answering dial-up calls:  Auto-answer: When in auto answer mode and a connection request is made, the RFI-9256 will RING output a configurable number of responses on the destination radio extension, and then automatically connect.
  • Page 36 For this reason it is not advised to use dial-up networking through back-to-back repeaters on the auxiliary port. RFI-9256 Radio Modem User Manual Page 36 of 109...
  • Page 37  Providing a point-to-multipoint routing network, where master to slave communications is no longer broadcast. In this case the RFI-9256 will decode each SCADA protocol packet to extract the destination address and match it against a radio address. Routing services are provided for a number of SCADA protocols, specifically: ...
  • Page 38  The end RTU address is 22, therefore the range of RTU addresses is 20, 21 and 22.  The base radio address is 1000 with port extension 00 (main port). RFI-9256 Radio Modem User Manual Page 38 of 109...
  • Page 39 5.3.6 Network Link and Online Determination There are two important indications given by the RFI-9256 as to the current network status, network link and online. These two parameters have different functionality when running in point-to-point, point-to- multipoint broadcast, Hayes dial-up, and SCADA routing modes as shown in Table 11.
  • Page 40 When a serial port output (DCD or CTS) has been configured to follow online or follow network link, the output will be high so long as online or network link is red or green. Once online or network link goes black the serial port output will go low. RFI-9256 Radio Modem User Manual Page 40 of 109...

  • Page 41: Auxiliary I/O

    Operation 5.4 Auxiliary I/O The RFI-9256 provides eight auxiliary digital I/Os. Refer to Appendix A.3 for individual pin assignments and electrical specifications. Each I/O can be individually configured as an input or output. The outputs can have a default state when power is applied before a connection is established to a remote radio.

  • Page 42: Applications

    Main PROTOCOL CONFIGURATION PROTOCOL CONFIGURATION Main Port: Point-to-point to 2000 Main Port: Point-to-point to 1000 SERIAL CONFIGURATION SERIAL CONFIGURATION Main Port: 115200, 8N1, Hardware Flow Main Port: 115200, 8N1, Hardware Flow RFI-9256 Radio Modem User Manual Page 42 of 109...

  • Page 43: Multiple Slave Point-To-Point Network

    2. This allows all data transmitted on DTE1 on the master to be received by DTE1 on slave RFI-9256 Radio Modem User Manual Page 43 of 109...
  • Page 44 Applications 1, and vice versa. At the same time all data transmitted by DTE2 on the master will appear at DTE2 on slave 2 and vice versa. RFI-9256 Radio Modem User Manual Page 44 of 109...

  • Page 45: Point-To-Point Network With Back-To-Back Repeaters

    The final point-to-point configuration involves the addition of one or more back-to-back repeaters. Back-to- back repeaters can be used to extend the range of an RFI-9256 based network. The basic network set-up for back-to-back repeaters in point-to-point links is shown in Figure 17.

  • Page 46: Broadcast Network

    The master and all the slaves must be configured such that:  They have the same hopping pattern, network address, and security code.  Both the master and slave have the broadcast protocol selected on their main serial port. RFI-9256 Radio Modem User Manual Page 46 of 109...

  • Page 47: Broadcast Network With Back-To-Back Repeaters

    2. In a similar fashion data received by master 2 will be output on its main port and thus retransmitted by slave 1 back to master 1. RFI-9256 Radio Modem User Manual Page 47 of 109...

  • Page 48: Hayes Dial-Up Networking

     ATD 100000<CR> : Dial the main port of the master (address 1000, extension 00). For more information on the Hayes dial-up protocol and connection management, see section 5.3.3 on page RFI-9256 Radio Modem User Manual Page 48 of 109...

  • Page 49: Dial-Up Networking With Back-To-Back Repeaters

    Main Port: 115200, 8N1, Hardware Flow Local Address: 5000 PROTOCOL CONFIGURATION Main Main Port: Hayes Dial-up SERIAL CONFIGURATION Main Port: 115200, 8N1, Hardware Flow Figure 21: Hayes dial-up network with three destinations and a back-to-back repeater RFI-9256 Radio Modem User Manual Page 49 of 109...
  • Page 50 AT command interface to bring up the menu system via the command. For more information on the Hayes dial-up protocol and connection management, see section 5.3.3 on page RFI-9256 Radio Modem User Manual Page 50 of 109...

  • Page 51: Scada Network With Routing Table

    In all SCADA routing networks, data travels from the master to one of the slaves, or from one of the slaves to the master. The slaves each require a default route with the master units address. The routing table for the master is Table 12. RFI-9256 Radio Modem User Manual Page 51 of 109...

  • Page 52: Scada Network With A Back-To-Back Repeater

    Table 13: Slave SCADA routing table 6.10 SCADA Network with a Back-to-back Repeater SCADA networks can use back-to-back repeaters in order to extend the network coverage. This scenario is shown in Figure 23. RFI-9256 Radio Modem User Manual Page 52 of 109...
  • Page 53 Hopping Pattern: 9 Local Address: 4008 PROTOCOL CONFIGURATION Main Main Port: Modbus Default Route: 30:00 RTU 41 SERIAL CONFIGURATION Main Port: 9600, 8O1, No Flow Figure 23: SCADA network with a back-to-back repeater RFI-9256 Radio Modem User Manual Page 53 of 109...
  • Page 54 Slaves 3 and 4 must have the following routing table shown in Table 17. Route Type RTU Address Radio Address Default Route 30:00 Table 17: Slaves 3 and 4 routing table RFI-9256 Radio Modem User Manual Page 54 of 109...

  • Page 55: Point-To-Point Auxiliary I/O

    The power-up default for the output I/O on both radios is low. More information on configuring the I/O can be found in section 5.4 on page 41. RFI-9256 Radio Modem User Manual Page 55 of 109...

  • Page 56: Point-To-Point Auxiliary I/O With A Back-To-Back Repeater

    I/O 1 as an output on Slave 1 and as an input on Master 2. Thus, the value of I/O 1 will be mirrored on Slave 1 from Master 1, which is passed on to Master 2, and Slave 2 will mirror the value of I/O 1 on Master 2. RFI-9256 Radio Modem User Manual Page 56 of 109...

  • Page 57: Hayes Dial-Up Auxiliary I/O

    I/O 1 on Slave 1 will remain at the last value of I/O 1 on the Master. The same situation can be repeated when the Master dials Slave 2. For more information on the Hayes dial-up protocol and connection management, see section 5.3.3 on page RFI-9256 Radio Modem User Manual Page 57 of 109...

  • Page 58: Appendix A Technical Specifications

    1mW – 1W (0dBm to +30dBm) Output Power Error Detection 32-bit CRC with packet re-transmit (ARQ) Antenna 9.0 to 28.0 VDC (RFI-9256 TRX) Power Requirements 8.0 to 30.0VDC (RFI-9256 OEM) @ 12VDC nominal: Receive mode – 150mA Transmit mode – 265mA @ 0dBm...
  • Page 59 Appendix A Technical Specifications Point-to-multipoint Broadcast Hayes Dial-up SCADA Protocol Router (ModBus, DNP3, TDE, Honeywell) Back-to-back Repeater Operating Environment -10ºC to +60ºC Table 18: Radio Specifications RFI-9256 Radio Modem User Manual Page 59 of 109...

  • Page 60: Connector Pin Assignments

    Input/Output (CMOS) I/O Bit 1 Input/Output (CMOS) I/O Bit 3 Input/Output (CMOS) – Table 19: RFI-9256 Interface Pin Assignments Input/output with 10K series limiting resistor. VCC=5V. Sink/source current limited to ±400uA. RFI-9256 Radio Modem User Manual Page 60 of 109...

  • Page 61: Power/Data Cable Assembly

    Appendix A Technical Specifications A.4 Power/Data Cable Assembly Figure 27: 9256 power/data cable assembly RFI-9256 Radio Modem User Manual Page 61 of 109...

  • Page 62: Back-To-Back Repeater Cable Assembly

    Appendix A Technical Specifications A.5 Back-to-back Repeater Cable Assembly Figure 28: RFI-9256 back-to-back repeater cable assembly RFI-9256 Radio Modem User Manual Page 62 of 109...

  • Page 63: I/O Example Schematics

    Appendix A Technical Specifications A.6 I/O Example Schematics A.6.1 Circuit Schematics Figure 29: Circuit Schematics RFI-9256 Radio Modem User Manual Page 63 of 109...

  • Page 64: Power Supply Notes

    Power supplies used to power the RFI-9256 should have sufficient current rating and ripple rejection. Typically <500m VRMS of power supply noise can be tolerated. The RFI-9256 contains a built in thermal fuse that will open the circuit in the event of any over current conditions, over temperature or reverse polarity.
  • Page 65 Appendix A Technical Specifications Firmware Version Number Product Name RFI-9256 Version 1.30 Rev.H Australia Country Identifier Major Number Revision Minor Number Figure 30: Example firmware version number Firmware revisions with major version number 1 will be compatible with this hardware build, while firmware revisions with major version number 1 and minor version number 10 will be compatible over the air with this build.

  • Page 66: Case Dimensions

    Appendix A Technical Specifications A.9 Case Dimensions Figure 31: Case physical dimensions RFI-9256 Radio Modem User Manual Page 66 of 109...

  • Page 67: Oem Dimensions

    Appendix A Technical Specifications A.10 OEM Dimensions Figure 32: OEM physical dimensions RFI-9256 Radio Modem User Manual Page 67 of 109...

  • Page 68: Appendix B Terminal Menu Reference

    Figure 33: Main menu  Status Information: The main menu displays the RFI-9256 model and firmware revision (1.30 Rev D in Figure 33), along with the unit name, current mode, serial number and manufacture date. RFI-9256 Radio Modem User Manual...

  • Page 69: R) Radio Configuration Menu

    1000-9999, while radios configured as repeaters (see section Back-to-back Repeater Operation on page 29) must be given the same local address in the range 10-99. Radios in different networks can have the same local address. RFI-9256 Radio Modem User Manual Page 69 of 109...
  • Page 70 5.3.3 on page 34.  Set ports as Dialup Repeater: A repeater extends the range of a RFI-9256 radio network. Repeaters consist of a pair of radios, one master and one slave wired together in a back-to-back configuration. This is covered in the section Back-to-back Repeater Operation on page 29. This function will configure the current RFI-9256 for dial-up repeater operation, with the settings for Hayes dialup described in the section Dial-up Networking with Back-to-back Repeaters on page 36.
  • Page 71 Backoff Retries Enable / Disable: When several slaves are to be connected simultaneously to a single master, they should be configured with back-off retries. This allow for collisions between the slaves to be resolved using exponential back off and retry. RFI-9256 Radio Modem User Manual Page 71 of 109...
  • Page 72  RSSI trigger level: The RFI-9256 will only attempt to acquire data if the power on the channel exceeds the RSSI trigger level. This can be configured between -120dBm and -50dBm, however setting this to greater than the radio sensitivity (-108dBm) will cause an artificial loss in sensitivity and should only be done in noisy environments.

  • Page 73: L) Protocol Port Selection Menu

    Aux Port: Select to change the protocol on the Auxiliary Port. Link/Port Protocol Menu Main Port: Protocol Type: Hayes Dialup Protocol Selection Menu Configure Protocol Menu (Esc) Previous Menu Enter Choice: Figure 38: Link/Port protocol menu for the main port RFI-9256 Radio Modem User Manual Page 73 of 109...
  • Page 74 DNP3: Configures the serial port for the DNP3 SCADA protocol using the FT3 frame formal (LPDU).  TDE: Configures the serial port for the Introl systems TDE protocol.  Disabled: Disables any transmission of data though the selected serial port. RFI-9256 Radio Modem User Manual Page 74 of 109...
  • Page 75 Hang-up on DTR Dropped Local on DTR (low) Ignore DTR Echo (ON/OFF) Response codes (ON/OFF) Auto-answer (ON/OFF) Set Max Rings Set to Defaults (Esc) Previous Menu Enter Choice: Figure 41: Hayes command control menu RFI-9256 Radio Modem User Manual Page 75 of 109...
  • Page 76  Set to Defaults: Restores the Hayes settings to their factory defaults for the selected port. The factory defaults are given in Appendix D on page 105. RFI-9256 Radio Modem User Manual Page 76 of 109...
  • Page 77 Delete All Routes: Deletes all routes in the routing table for the selected port.  List All Routes: Lists all the configured routes for this RFI-9256. Slave radios only have a default route configured, while masters may have an extensive routing table. The following items are displayed for each route: (a) IDX is the individual route identifier.

  • Page 78: S) Serial Port Configuration Menu

    Main Port: Allows the serial port settings for the main port to be configured as shown in Figure 45.  Aux Port: Allows the serial port settings for the auxiliary port to be configured. RFI-9256 Radio Modem User Manual Page 78 of 109...
  • Page 79 Seven Bit Data / Eight Bit Data: Selects the number of data bits to use on the serial port.  Set to Defaults: Restores the factory default settings for the serial port. The factory defaults are given in Appendix D on page 105. RFI-9256 Radio Modem User Manual Page 79 of 109...

  • Page 80: M) Radio And I/O Configuration Menu

    Enter Choice: Figure 47: Radio and I/O configuration menu  DCD Output Control Menu: DCD (Data Carrier Detect) is an output from the RFI-9256 that can be set to one of the options given in section 0 on page 21. ...
  • Page 81 Aux I/O Follows remote = Disabled Aux I/O Direction Menu Powerup defaults Menu Sample Rate Aux I/O Follows remote Enable/Disable Aux I/O (Esc) Previous Menu Enter Choice: Figure 49: Auxiliary I/O menu RFI-9256 Radio Modem User Manual Page 81 of 109...

  • Page 82: P) Radio Personality Menu

     Set Security Code: Sets the security code. The security code protects the radio network from interference from other networks using RFI-9256 radio radios. The code is a 32-bit (9 digit) number, which allows 0 to 4294967295 combinations. ...

  • Page 83: D) Diagnostics Menu

    (b) LocSrc: the local port number that is the source/destination for the data. (c) LocExt: the extension that has been dialled if a remote has dialled this unit (d) DestSrc: the remote port that is the source/destination for the data RFI-9256 Radio Modem User Manual Page 83 of 109...
  • Page 84 (d) Info: Displays all available information, along with stats, errors, and warnings. (e) Debug: Displays internal debugging information along with info, states, warnings, and errors.  Clear Log: Clears the log. RFI-9256 Radio Modem User Manual Page 84 of 109...
  • Page 85 Show Stats/Logging: This function is exactly the same as in the diagnostics menu in section B.6 on page 83.  Reset Physical Layer Logging: Clears the RF logging information.  Reset Serial Logging: Clears the serial port logging information. RFI-9256 Radio Modem User Manual Page 85 of 109...

  • Page 86: Appendix C Hayes At Command Reference

    The hang-up command forces the radio to terminate the current dial-up connection. C.1.5 “ATI” Information The information commands can be used to return various information about the radio. The list of commands are shown in Table 22. RFI-9256 Radio Modem User Manual Page 86 of 109...
  • Page 87 The response codes that are generated by the radio can be suppressed, so that commands do not return CONNECT NO CARRIER , or . The options for generating response codes are shown in Table 23. RFI-9256 Radio Modem User Manual Page 87 of 109...
  • Page 88 See the section S-Register and %-Register Commands on page 14 for a full list of response codes. C.1.9 “ATW” Delayed Response The RFI-9256 can often establish connections much faster than a conventional public switched telephone network (PSTN) modem. In order to be compatible with PSTN modems the...
  • Page 89 C.1.13 “AT&G” Exclusive Port Control There are times when a DTE may require exclusive control of a radio. Since the RFI-9256 is a dual port radio, this involves preventing any dial attempts from the other serial port. There are three options for...
  • Page 90 Displays all registers except for I registers. AT&V1 Displays all I registers. AT&V2 Displays all S registers. AT&V8 Displays the current communications links. AT&V9 Displays the fault / diagnostics log. Table 31: AT&V view profile commands RFI-9256 Radio Modem User Manual Page 90 of 109...

  • Page 91: S-Register Commands

    Table 32: AT&V view profile commands C.2 S-Register Commands C.2.1 “ATS0” Rings Before Answer Sets the number of rings that are output before the RFI-9256 automatically answers a call.  ATS0=3<CR> RING : Causes 3 messages to be output before answering.
  • Page 92 S-register 41 contains the number of retries used by the radio, and is within the range 0 to 255 where a value of 0 will disable retries.  ATS41=25<CR> : Sets 25 retries.  ATS41=0<CR> : Disables retries. RFI-9256 Radio Modem User Manual Page 92 of 109...
  • Page 93 S-register 47 sets the frame time in milliseconds. The only valid frame time values are:  ATS47=5<CR> : Sets the frame time to 5ms.  ATS47=8<CR> : Sets the frame time to 8ms.  ATS47=10<CR> : Sets the frame time to 10ms. RFI-9256 Radio Modem User Manual Page 93 of 109...
  • Page 94 S-register 60 sets the current radio log level. The only valid values are:  ATS60=0<CR> : Only errors are logged.  ATS60=1<CR> : Warnings and errors are logged.  ATS60=2<CR> : Status information, warnings, and errors are logged. RFI-9256 Radio Modem User Manual Page 94 of 109...
  • Page 95 0 sets the I/O as an input.  ATS82=00<CR> : This would set all eight I/Os as inputs.  : This would set I/Os 0…3 to be inputs and I/Os 4…7 to be outputs. ATS82=F0<CR> RFI-9256 Radio Modem User Manual Page 95 of 109...
  • Page 96 : Sets DCD to always be on. C.2.26 “ATS91” Set CTS control S-register 90 sets how the clear to send (CTS) output is controlled. The options for controlling CTS are shown in Table 30. RFI-9256 Radio Modem User Manual Page 96 of 109...
  • Page 97 ” for the auxiliary port. There are three options for the parity:  ATS101=0<CR> : Disable parity on current port.  ATS101=1:0<CR> : Odd parity on the main port.  ATS101=2:1<CR> : Even parity on the auxiliary port. RFI-9256 Radio Modem User Manual Page 97 of 109...
  • Page 98 The value store in s-register 104 will not be applied immediately. It will only become active once the command is executed. NOTE: The flow control can be set for a specific port by appending “:0” for the main port and “:1” for the auxiliary port. RFI-9256 Radio Modem User Manual Page 98 of 109...

  • Page 99: Register Commands

    The list of commands supplied for compatibility only are given in the summary of commands in the next section. C.5 Summary of Commands The following section provides a summary of all AT commands supported by the RFI-9256. Each of these tables has the following headings: ...
  • Page 100 Initialise radio (power on reset). &A0 Auxiliary I/O Disable &A1 Auxiliary I/O Enable &A2 Auxiliary I/O Follow Remote &C0 DCD always on. &C1 DCD follow online. &C2 DCD follows remote DTR. RFI-9256 Radio Modem User Manual Page 100 of 109...
  • Page 101  &V0 registers).  &V1 View all I-register profile information.  &V2 View all s-register profile information.  &V8 View current links.  &V9 View logging.  &W Write all configuration. RFI-9256 Radio Modem User Manual Page 101 of 109...
  • Page 102 Appendix C Hayes AT Command Reference  &W1 Submit serial port configuration. Table 36: General Commands RFI-9256 Radio Modem User Manual Page 102 of 109...
  • Page 103 Auxiliary I/O direction mask. Auxiliary I/O power-up default. Auxiliary I/O sample timer. DCD control. CTS control.   S100 Port baud rate.   S101 Port parity.   S102 Port data bits. RFI-9256 Radio Modem User Manual Page 103 of 109...
  • Page 104 S104 Port flow control. Table 37: S-register Commands Command Description Last on Line &W &W1 Compat    Unit name.    Set menu password. Table 38: %-register Commands RFI-9256 Radio Modem User Manual Page 104 of 109...

  • Page 105: Appendix D Factory Defaults

    Hayes Dialup Hayes Connect Timeout 9985ms Escape Character Escape Guard Time 1000ms DTR Mode Hang-up on DTR Dropped Echo Responses Auto-answer Ring count Routing Table Empty Table 40: Protocol default settings RFI-9256 Radio Modem User Manual Page 105 of 109...
  • Page 106 All inputs Auxiliary I/O Powerup Defaults All high Event Log Level General Information Unit Name None Security Code None Menu Password None Menu Timeout 15 Minutes Table 42: Other default settings RFI-9256 Radio Modem User Manual Page 106 of 109...

  • Page 107: Appendix E Glossary

    Frequency Hopping Spread Spectrum Industrial Scientific Military PSTN Public Switched Telephone Network RSSI Receive Signal Strength Indication SCADA Supervisory Control and Data Acquisition Time Division Duplex Table 43: Terms, acronyms, and abbreviations RFI-9256 Radio Modem User Manual Page 107 of 109...
  • Page 108 Other Commands ............99 Frame Time ................ 27 Radio Commands ............86 S-Register Commands ........... 91 Glossary................107 Summary of Commands ..........99 GUI ..................11 Hayes Dial-up Protocol ............34 RFI-9256 Radio Modem User Manual Page 108 of 109...
  • Page 109 Transmit Power ..............26 Power / Fault ..............19 Tx Power ................17 Power/Data Cable Assembly ..........61 Product Overview ..............5 www.esis.com.au Ph 02 9481 7420 Fax 02 9481 7267 esis.enq@esis.com.au RFI-9256 Radio Modem User Manual Page 109 of 109...

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