Reference Manual
Table Of Contents
- Preface
- 1. Overview
- Untitled
- 2. Equipment
- 3. Installation
- 4. Basic Radio Programming and Setup
- 4.1. Define the Network Type and the Radio's Role in that Network
- 4.2. Establish Communication with Instrumentation and Computers
- 4.3. Establishing Communication with Other Radios in the Network
- 4.4. Set the Data Transmission Characteristics
- 4.5. Set Radio Passwords
- 4.6. Set the Hop Table Size in the Terminal Interface
- 4.7. Set the Radio to a Single Channel in a Terminal Emulator
- 4.8. Set the Radio to Hop Channels
- 4.9. Edit Frequencies for Multiple Channels
- 5. Configure Point-to-MultiPoint Networks
- 5.1. Point to MultiPoint Network Characteristics
- 5.2. Point-to-MultiPoint Network Quick Start (Terminal Interface)
- 5.3. Overlapping MultiPoint Networks
- 5.4. Establishing Communication with Other Radios in a MultiPoint Network
- 5.5. Routing Communication Through the Network
- 5.6. Setting Other MultiPoint Parameters
- 5.7. Reading Diagnostics in Tool Suite
- 6. Configure Point-to-Point Networks
- 7. View Radio Statistics
- 8. Release Notes
- 9. Additional Radio Information
- Appendix A: Technical Specifications
- Appendix B: RF Board Pin-Out
- Appendix C: RS232 Pin Assignments - DB9
- Appendix D: LRS455 Frequency Table
- Appendix E: Factory Default Settings
- Appendix F: Point-to-MultiPoint Operation LEDs
- Appendix G: Point-to-Point Operation LEDs
- Appendix H: FreeWave Legal Information
- Blank Page
- Blank Page
5. Configure Point-to-MultiPoint Networks
LUM0020CD Rev June-2020 Page 56 of 112 Copyright © 2019FreeWave
This document is subject to change without notice. This document is the property of FreeWave Technologies, Inc.
and contains proprietary information owned by FreeWave. This document cannot be reproduced in whole or in
part by any means without written permission from FreeWave Technologies, Inc.
5.1. Point to MultiPoint Network Characteristics
A Point to MultiPoint network has these unique characteristics:
l Golden Settings (on page 56).
l Master to Slave Communications (on page 56).
l Slave to Master Communications (on page 56).
5.1.1. Golden Settings
A Point-to-MultiPoint network requires that the Golden Settings (on page 36) are set the same on
ALL radios in the network.
Note: If several independent MultiPoint networks are located in close proximity, the planning
becomes more critical.
It is very important to include as much frequency and time diversity as possible using different Min
and Max Packet Size.
In some instances the use of the MultiMaster Sync option may be required.
l For more information, see Application Note #5412, Synchronizing Collocated
Masters (Multi-Master Sync Mode) (available at support.freewave.com).
Registration is required to use this website.
l Or Contact FreeWave Technical Support (on page 7).
5.1.2. Master to Slave Communications
Master - to - Slave communications in a MultiPoint network have these characteristics:
l Data packets sent from the Master include a 32-bit CRC.
l The Master repeats its data broadcast between 0 to 9 times, depending on the Master
Packet Repeat (on page 66) setting.
l A Slave or Repeater does not send acknowledgments to the Master when it receives data.
l When any Slave in the network receives the data packet from the Master with the 32-bit
CRC, that Slave ignores any additional repeats of the data, and passes the data to its
data port.
l Repeaters in the network send data to Slave radios and other Repeaters.
5.1.3. Slave to Master Communications
Slave - to - Master communications in a MultiPoint network have these characteristics:
l Data packets sent from the Slave to the Master include a 32-bit CRC.
l When the Master successfully receives data, it sends an acknowledgment to the Slave and
passes the data out its data port.
LRS455A-C, LRS455A-CE, LRS455-T
User-Reference Manual