truST — IEC 61131-3 Structured Text toolchain, runtime, and HMI

Documentation: https://johannespettersson80.github.io/trust-platform/

truST is an open-source IEC 61131-3 Structured Text toolchain with:

• a VS Code extension and IEC-aware language server
• a live runtime panel and trust-debug debugger in the editor
• trust-runtime for local and target execution
• browser IDE and HMI pages at /ide and /hmi
• CLI, agent, and harness workflows for automation

Desktop VS Code is the primary truST engineering surface: edit Structured Text, inspect live I/O and memory, view compile diagnostics, and debug the same running project without leaving the editor.

Start

• Install truST: docs site -> Start -> Installation
• Program in VS Code: docs site -> Start -> Program In VS Code
• Operate in Browser HMI: docs site -> Start -> Operate In Browser HMI

Features

• IEC-aware diagnostics, formatting, rename, navigation, and refactors
• runtime panel with live values, memory, and I/O inspection
• debugger with breakpoints, stepping, locals, and call stack
• browser IDE and operator HMI backed by the same project/runtime
• deterministic test and harness workflows
• PLCopen XML import/export and visual editor support

Install

1. Install truST LSP from the VS Code Marketplace.
2. Download released binaries from the latest GitHub release if you need the runtime and debugger locally.
3. Open the docs site for guided setup, examples, and target-host instructions.

Command-line extension install:

code --install-extension trust-platform.trust-lsp

Components

Component	Binary	Purpose
Language Server	trust-lsp	Diagnostics, navigation, formatting, refactors
Runtime	trust-runtime	Runtime execution engine, CLI workflows, web UI
Debug Adapter	trust-debug	DAP debugging
Bundle Tool	trust-bundle-gen	STBC bundle generation

Status

• VS Code Marketplace: live
• GitHub Releases: live
• Runtime + debugger: experimental
• Rust MSRV: 1.85

Help

• GitHub Issues: https://github.com/johannesPettersson80/trust-platform/issues
• Email: johannes_salomon@hotmail.com
• LinkedIn: https://linkedin.com/in/johannes-pettersson

License

Licensed under MIT OR Apache-2.0. See LICENSE-MIT and LICENSE-APACHE.