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Important

This documentation is meant to be used by developers or users which has basic programming skills. If you are regular user please use FastyBird IoT documentation which is available on docs.fastybird.com.

The FastyBird IoT Modbus Connector is an extension for the FastyBird IoT ecosystem that enables seamless integration with Modbus devices. It allows users to easily connect and control Modbus devices from within the FastyBird IoT ecosystem, providing a simple and user-friendly interface for managing and monitoring your devices.

About Connector

This connector has some services divided into namespaces. All services are preconfigured and imported into application container automatically.

\FastyBird\Connector\Modbus
  \API - Services and helpers related to API - for managing data exchange validation and data parsing
  \Clients - Services which handle communication with Modbus devices
  \Commands - Services used for user console interface
  \Entities - All entities used by connector
  \Helpers - Useful helpers for reading values, bulding entities etc.
  \Queue - Services related to connector internal communication
  \Schemas - {JSON:API} schemas mapping for API requests
  \Translations - Connector translations
  \Writers - Services for handling request from other services

All services, helpers, etc. are written to be self-descriptive 😉.

Tip

To better understand what some parts of the connector meant to be used for, please refer to the Naming Convention page.

Using Connector

The connector is ready to be used as is. Has configured all services in application container and there is no need to develop some other services or bridges.

Tip

Find fundamental details regarding the installation and configuration of this connector on the Configuration page.

This connector is equipped with interactive console. With this console commands you could manage almost all connector features.

• fb:modbus-connector:install: is used for connector installation and configuration. With interactive menu you could manage connector and devices.
• fb:modbus-connector:execute: is used for connector execution. It is simple command that will trigger all services which are related to communication with Modbus devices and services with other FastyBird IoT ecosystem services like state storage, or user interface communication.

Each console command could be triggered like this 🤓

php bin/fb-console fb:modbus-connector:install

Note

The path to the console command may vary depending on your FastyBird application distribution. For more information, refer to the FastyBird documentation.

Troubleshooting

Combined Data Types

In instances where some devices utilize different data types for reading and writing values, a special data type SWITCH can be used.

For instance, a Chinese relay device could utilize binary representations when retrieving the relay state and integer values for adjusting the state. To accommodate this, a specialized format can be set up. For more information, refer to the relevant relay type's page.

Known Issues and Limitations

This connector only supports boolean and numerical values, with a maximum byte size for numbers of 4 bytes, meaning the value is composited of 2 registers.