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PLUS for Node-RED - Contribution Modbus

The Open Source Modbus Tools

Klaus Landsdorf (Iniationware, P4NR), Kay Grewe, Mohammed Yachou, and JohnOtten

Interested in Node-RED and Modbus? This book is for you. We cover the node-red-contrib-modbus package, Modbus protocol usage in Node-RED, and even future packages like node-red-contrib-modbus-flex-server. A must-read for Node-RED enthusiasts!

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About

About

About the Book

This book is absolutely for you if you're keen to dive deeper into the world of Node-RED packages. Here's what you can expect:

  • Comprehensive understanding of the node-red-contrib-modbus package.
  • Education on Modbus protocol usage within the context of Node-RED.
  • Sneak peeks into upcoming packages, including the anticipated node-red-contrib-modbus-fex-server.

This book thus aims to equip you with vital knowledge and insight into the specific domain of Node-RED and Modbus. Don't miss it!

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Node.jsSmart HomeHome AutomationInternet of ThingsSoftware EngineeringProgramming Cookbooks

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Author

About the Authors

Klaus Landsdorf (Iniationware, P4NR)

Hybrid-Expert for OT/IT - IIoT - IoT - Industrie 4.0

Kay Grewe
Mohammed Yachou
JohnOtten

Contents

Table of Contents

Disclaimer

Edition note — 5.60.1+

Introduction

  1. FlowFuse and P4NR
  2. Understanding P4NR and Modbus Integration
  3. Key Features of our P4NR Modbus Package
  4. Who should read this book?
  5. Structure
  6. Future Updates
  7. Conclusion

Modbus Package Installation

  1. Recommended stack (this edition)
  2. Install from the Palette
  3. Install with npm
  4. Update / pin a version
  5. What v5 does not include
  6. Serial note (honesty)

Modbus Client

  1. Modbus Queue Info
  2. Communication Switch Example
  3. FIFO Queue
  4. Modbus Client Communication Example

Modbus Services

  1. Modbus Basic Services
  2. Modbus Advanced Services
  3. IO’s for Read/Write Services
  4. Polling
  5. Events
  6. Exceptions
  7. Information
  8. Configuration and Performance
  9. Flex-Connector
  10. Modbus Read Service
  11. Read Modbus by Events
  12. Modbus Write Service
  13. Coils and discrete inputs (FC1, FC2, FC5, FC15)
  14. Modbus Sequence Service
  15. Modbus Custom Function Codes (Flex FC)
  16. Modbus Event Read FC3

Modbus Server

  1. Demo Server (Modbus-Server)
  2. What this server is not

Examples

  1. Modbus Flex Server HTTP Request Example
  2. Modbus Client Read by Event Example Flow
  3. Modbus Server Read Example Flow
  4. Modbus Server Write Example Flow
  5. Modbus Flex Write Example Flow
  6. Monitoring Results of Writing Multiple Holding Registers Using FC16

Development

  1. How to Enable Debug Mode for this package
  2. Modbus Response
  3. Troubleshooting Common Error Messages with Modbus-Read Node
  4. Flex-FC Configuration (Custom-FC)

Client ops — timeouts, queue, and reconnect (5.60.1)

  1. Connection and timing
  2. Queue and concurrency
  3. Logging toggles
  4. What 5.60.1 changed (honesty)
  5. Lab
  6. Shared client isolation

Learning Path — package examples 01–18

Path overview

  1. Port map

Labs 01–09

Labs 10–18

Appendix — Settings reference (v5.60.1+)

  1. Modbus-Client (summary)
  2. Service nodes (common)
  3. IO-Config naming (example 11)
  4. emptyMsgOnFail / keepMsgProperties

Appendix — Troubleshooting (v5.60.1+)

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