modbus-core

A no-std Rust modbus library.

Installation

Add this to your Cargo.toml:

[dependencies]
modbus-core = "*"

If you like to use Modbus TCP only:

[dependencies]
modbus-core = { version = "*", default-features = false, features = ["tcp"] }

If you like to use Modbus RTU only:

[dependencies]
modbus-core = { version = "*", default-features = false, features = ["rtu"] }

Protocol-Specification

• MODBUS Application Protocol Specification v1.1b3 (PDF)
• MODBUS over serial line specification and implementation guide v1.02 (PDF)
• MODBUS Messaging on TCP/IP Implementation Guide v1.0b (PDF)

License

Copyright 2018-2025 slowtec GmbH

MIT/Apache-2.0