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
4. Basic Radio Programming and Setup
LUM0020CD Rev June-2020 Page 32 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.
4.2.4. Modbus RTU
Important!: When using the radio in Modbus RTU mode, the Master Packet Repeat (on page 66)
MUST match in every radio regardless of whether the network is in Point-to-Point or MultiPoint
mode.
Modbus RTU
Setting Description
Default Setting 0 (Disabled)
Options Any number between 0 to 9
Setup Terminal
Menu
(1) Set Baud Rate > (B) ModbusRTU
Description
A setting other than 0 in this parameter causes the radio to wait for an amount of
time gathering data before sending out the RF link (e.g., a port delay).
l 0 (Disabled) - The radio sends data out through its RF link as soon as the data
is received into the serial port. This is the default setting.
l 1 - The radio waits for a number of slots equal to two times the Master Packet
Repeat setting before sending the received data out the RF link.
l With a setting of 1, the radio waits for a number of slots equal to two times
the Master Packet Repeat setting before sending the received data out the
RF link.
Example: If the Master Packet Repeat parameter is set to 3, the
radio waits for 6 slots, gathering data up the whole time.
At the end of the 6 slots, the radio sends all received data in one
“burst.” This is the appropriate setting for most Modbus RTU devices.
l 2 or higher - The radio waits for a number of slots calculated using this
formula:
(Modbus RTU setting + Master Packet Repeat setting + 1) x 2
Example: In a radio where the Modbus RTU setting is 2 and the
Master Packet Repeat setting is 3, the radio waits for(2+3+1)x2,
or 12 slots.
4.2.5. Serial Interface
Serial Interface
Setting Description
Default Setting (0) RS232
LRS455A-C, LRS455A-CE, LRS455-T
User-Reference Manual
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