1. Manuals
  2. Brands
  3. Murata Manuals
  4. Modem
  5. DN-24 series
  6. User manual

Murata DN-24 series User Manual

2.4 ghz serial modems
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual

Revision History

Revision
Date
1
05/03/2012
2
01/09/2015
©2009-2015 by Murata Electronics N.A., Inc.
DN24G/GI Series User Guide Rev. 2.0 01-09-15
Author
Change Description
F. Perkins
Initial issue
R. Willett
Reformatted to comply with new Murata V.I.
Page 1 of 44
RFM products are now
Murata products.
DN-24 Series
2.4 GHz
Serial Modems
User Guide
www.murata.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the DN-24 series and is the answer not in the manual?

Questions and answers

Related Manuals for Murata DN-24 series

Summary of Contents for Murata DN-24 series

  • Page 1: Revision History

    Revision History Revision Date Author Change Description 05/03/2012 F. Perkins Initial issue 01/09/2015 R. Willett Reformatted to comply with new Murata V.I. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 1 of 44 www.murata.com...
  • Page 2 FCC Antenna Gain Restriction: The DN-24 series 2.4 GHz serial modems have been designed to operate with any dipole antenna of up to 12 dBi of gain, any corner reflector antenna of up to 14 dBi gain, any patch antenna of up to 12 dBi gain.
  • Page 3 (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. Changes or modifications to a DN-24 series serial modem not expressly approved by Murata Electronics N.A., Inc. may void the user’s authority to operate the module.

  • Page 4: Table Of Contents

    Table of Contents DN-24 Series 2.4 GHz Serial Modems ....................5 DN-24 Systems ........................... 5 Point-to-Point Systems........................5 Point-to-Multipoint Systems ......................6 Store-and-Forward Systems ......................7 DN-24 Product Descriptions ........................ 8 Specifications ............................9 Absolute Maximum Ratings ......................... 9 System Specifications ......................... 9 LED Indicators .............................

  • Page 5: Series 2.4 Ghz Serial Modems

    The DN-24 series 2.4 GHz serial modems provide a low cost, ready-to-use solution for robust wireless data communications in the 2.4 GHz ISM band. There are currently two products in the DN-24 series, the DN-24G and the DN-24GI. The DN-24G provides an RS-232C serial interface with optional hardware flow control.

  • Page 6: Point-To-Multipoint Systems

    While most traffic in a point-to-multipoint system is between the base and the remotes, DN-24 technology also allows for peer-to-peer communication from one remote to another. Figure 2.2.1 ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 6 of 44...

  • Page 7: Store-And-Forward Systems

    Store-and-forward systems are especially useful in applications such as agriculture where data is only collected periodically. Figure 2.3.1 ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 7 of 44...

  • Page 8: Product Descriptions

    2.4 DN-24 Product Descriptions There are currently two products in the DN-24 series, the DN-24G and the DN-24GI. The DN-24G provides an RS-232C serial interface. The DN-24GI offers a selectable RS-232C interface or a two-wire, multi-drop RS-485 interface. DN-24 series modems are based on Murata’s DNT24 frequency hopping spread spectrum (FHSS) transceiver, and can communicate with other DNT24-based modems and sensor nodes, as well as customer developed products.

  • Page 9: Specifications

    On a remote, this LED indicates it is linked to the base. Right-most LED on the front of the unit, green, indicates the unit is powered up. POWER ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 9 of 44...

  • Page 10: Installation

    To achieve maximum range and reliability, especially in industrial locations, the DN-24 should be mounted as high as practical. Murata offers a number of high gain antennas that can be used to further extend the DN-24’s range. The use of these antennas is not allowed in all geographical regions;...

  • Page 11: Attaching The Antenna

    This pin is the request to send input from the modem’s host HOST_RTS This pin is the clear to send output from the modem. HOST_CTS No connection ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 11 of 44 www.murata.com...

  • Page 12: Dn-24Gi Connector Details

    3. All other parameters may be left at their default values. Murata provides a setup utility program called DNCONFIG.exe that configures a DN-24 modem as a base or a remote, and optionally sets the serial port to a baud rate other than the 9.6 kbps default.

  • Page 13: Technical Reference

    In a store-and-forward system, however, the base-mode network IDs of all routers must be set to different values between 0x00 to 0x3F. If the base-mode network ID of 0x00 is assigned to a router, the ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 13 of 44 www.murata.com...

  • Page 14: Network Linking And Slot Registration

    Protocol-formatted messages are discussed in detail in Section 7 of this manual. Briefly, protocol- formatted messages include a start-of-messages character, message length and message type information, the destination address of the message, and the message payload. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 14 of 44...

  • Page 15: System Configuration

    MAC address of the remote sending a message. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 15 of 44 www.murata.com...

  • Page 16: Configuring A Customized Point-To-Point Or Point-To-Multipoint System

    Most applications will require only a few of these parameters be changed from their default values. But for those applications that need them, Murata recommends the following configuration sequence. Skip the configuration steps where the default parameter value is satisfactory.
  • Page 17 16. Set the point-to-point reply timeout on the base in the P2PReplyTimeout parameter in Bank 1. The default is 16 hops. See Section 7.4.2 for parameter details. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 17 of 44 www.murata.com...

  • Page 18: Configuring A Store-And-Forward System

    For example, the base can send three messages per hop when the BSS is 90 bytes, provided the total payload bytes in the three messages is 72 bytes or less: ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 18 of 44 www.murata.com...
  • Page 19 HD = 55600 round to 56000 µs = 56 ms Excel Formatted Equations (load the Excel analysis ToolPak add-in for the QUOTIENT function): ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 19 of 44...
  • Page 20 ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 20 of 44...

  • Page 21: Configuring The Serial Port

    TxData command message, the radio can return a TxDataReply message to indicate the status of the transmission - whether it succeeded or failed. To assist in interpreting the ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 21 of 44 www.murata.com...

  • Page 22: Message Format Details

    0x02 Packet Type 0x00 = EnterProtocolMode 0x03 - 0x08 Payload String = “DNTCFG” or 0x44 0x4E 0x54 0x43 0x46 0x47 Table 7.3.2 ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 22 of 44 www.murata.com...
  • Page 23 Register Size Register size in bytes, only one parameter at a time (wrong register size will produce an error response) Table 7.3.7 ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 23 of 44 www.murata.com...
  • Page 24 Destination MAC address, in Little Endian byte order 0x06 - 0x72 Tx Data Up to 109 bytes of data to Base, or 105 bytes from Base Table 7.3.11 ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 24 of 44 www.murata.com...
  • Page 25 Register value, all bytes in the register (only one parameter at a time) *Bytes eight through the end of the message will not be returned in case of an error Table 7.3.14 ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 25 of 44...
  • Page 26 0x07 - 0x73 Rx Data Up to 105 bytes of data from Base, up to 109 bytes from Router or Remote Table 7.3.17 ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 26 of 44 www.murata.com...
  • Page 27 RX power of packet as received by device’s parent in dBm, -128 to 126 or 0x0D Parent RX Power 127 if invalid Table 7.3.21 ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 27 of 44 www.murata.com...

  • Page 28: Configuration Parameter Registers

    A HopDuration change takes effect immediately. Child radios will re-link following a HopDuration parameter change as they receive the updated hop duration value from the base. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 28 of 44 www.murata.com...
  • Page 29 0x00 reduces network congestion in a store-and-forward system, but no TxDataReply will be sent from the destination to confirm reception. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 29 of 44...

  • Page 30: Bank 0X01 - System Settings

    5 channel band for fast linking, use in US and Canada only 0x0D 2415 - 2475 MHz 0xFF Auto Auto Autoscan for remote to match base Table 7.4.2.2 ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 30 of 44 www.murata.com...
  • Page 31 EEPROM. At this point the number of cycled parameters can be set to 8, which will significantly speed up future system resynchronizations. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 31 of 44 www.murata.com...

  • Page 32: Bank 0X02 - Status Parameters

    0x43 is defined for the DN-24 Revision C hardware. FirmwareVersion - this parameter holds the firmware version of the radio in 2-digit BCD format. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 32 of 44...

  • Page 33: Bank 0X03 - Serial Settings

    14.4 kbps 0x05 19.2 kbps 0x06 28.8 kbps 0x07 38.4 kbps 0x08 57.6 kbps 0x09 115.2 kbps 0x0A 230.4 kbps 0x0B 250.0 kbps ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 33 of 44 www.murata.com...

  • Page 34: Bank 0X04 - Host Protocol Settings

    RemoteDestAddr. When set to 0x01, the destination address of transparent mode packets will be the originator of the most recent RX packet processed. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 34 of 44 www.murata.com...

  • Page 35: Bank 0X0Ff - Special Functions

    0x00 0x00 0x00, which is the base. The RSSI value of the received message is 0xB4, indicating a received signal strength of approximately -76 dBm. The data following the RSSI value is the “Hello” text. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 35 of 44...

  • Page 36: Utility Program

    The DNT Demo requires no installation and can be simply copied to the PC and run. It provides access to all configuration parameters relevant to DN-24 series modem operation, and allows basic testing of DN- 24 series modems and systems.
  • Page 37 5. Click on the drop-down box at the top of the Radio 1 column and click on the MAC Address (preloaded when the Remote is turned on after the Base), or load the MAC Address for the Remote from the heartbeat message. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 37 of 44...

  • Page 38: Serial Communication And Radio Configuration

    Connect PCs to both the Base and the Remote for serial communication testing. Click the Stop button under the Refresh Delay label on the I/O Tools tab and move to the Transmit Tools tab, as shown in Figure 8.1.1. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 38 of 44...
  • Page 39 Pressing the Transmit button once will cause a transmission each transmit interval (seconds) until the button is pressed again. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 39 of 44...
  • Page 40 Big-Endian order. The utility program automatically reorders multi-byte data to and from Little-Endian order when building or interpreting messages. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 40 of 44...
  • Page 41 Broadcast Mode, which applies to both the base and the remotes. Figure 8.1.4 Figure 8.1.4 shows the Status tab contents, corresponding to Bank 2. Note the Status tab contains read- only parameters. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 41 of 44 www.murata.com...
  • Page 42 Figure 8.1.6 Figure 8.1.6 shows the Protocol tab contents, corresponding to Bank 4. Transparent serial data communication is currently chosen. ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 42 of 44 www.murata.com...
  • Page 43 The Demo Utility File, Options and Help menus are shown in Figure 8.1.7. Figure 8.1.7 ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 43 of 44 www.murata.com...

  • Page 44: Warranty

    ONLY AND SHALL NOT BE APPLICABLE TO ANY OTHER PERSON OR ENTITY INCLUDING, WITHOUT LIMITATION, CUSTOMERS OF BUYERS. Part # M-0024-2002, Rev B ©2009-2015 by Murata Electronics N.A., Inc. DN24G/GI Series User Guide Rev. 2.0 01-09-15 Page 44 of 44...

Table of Contents