cwalter-at/freemodbus
BSD licensed MODBUS RTU/ASCII and TCP slave observed · 2026-08-28
Health v2 · maintenance only
63/100
- Activity 89
- Release rhythm 8
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 2888
- days_rel: 460
- days_push: 70
- n_releases_24m: 1
Adoption not part of the score
1088 stars · 483 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
FreeModbus is a BSD-licensed Modbus ASCII/RTU and Modbus TCP slave (server) implementation for embedded systems, implementing the Modbus Application Protocol v1.1a. It is written in C with portable core protocol code and hardware-specific port layers for various microcontroller demos.
Use cases
- implement a Modbus slave on an embedded microcontroller
- expose sensor data over Modbus RTU or ASCII serial lines
- serve Modbus TCP requests from an embedded device
- integrate an embedded device with SCADA or PLC systems
- port a Modbus protocol stack to a custom hardware platform
When to choose
- you need a lightweight, BSD-licensed Modbus slave stack for an embedded C project
- you need both serial (RTU/ASCII) and TCP Modbus support
- you want a mature, widely used protocol implementation you can port to your own hardware
When to avoid
- you need a Modbus master/client implementation rather than a slave
- you need an actively maintained project with official vendor support
- you want a high-level library for desktop or server-side Modbus communication
Facets
library · maturity maintenance
embedded networking serialization embedded-systems embedded c cross-platform modbus modbus-tcp modbus-rtu modbus-ascii slave industrial-automation protocol-stack bsd-license automation industrial protocols
1 source
- readme: https://github.com/cwalter-at/freemodbus · fetched 2026-08-28 · a7c904cf12ef
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| cwalter-at/freemodbus | main | 63 |
For agents
markdown · JSON · MCP: product_card(name="cwalter-at/freemodbus")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem