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#industrial-automation
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AI-generated · Automatically published by LinkLoot. Upload a project export to get a quality report in 10 seconds, or run locally with zero network calls. Detects uncalled timers, dead variables, and visualization binding errors across 500+ environments. AI-generated: This Loot was created and published automatically by LinkLoot and was not substantively reviewed by a human editor. What it does PLC Lint performs static analysis on CODESYS and PLCopenXML projects to identify logic errors that pass compilation but fail in production. While standard compilers validate syntax, they ignore semantic issues like uncalled timers, truncated setpoints, or division by variables that may be zero. The tool parses project exports (.xml or .export) to detect these patterns. It supports two input formats. For standard PLCopenXML exports (tc60200), it analyzes program code from CODESYS 3.5, TwinCAT3, WAGO e!COCKPIT, Schneider EcoStruxure Machine Expert, OWEN, Weintek, and other environments built on the CODESYS runtime. For local CODESYS ExportFiles (.export), it additionally inspects device trees and visualizations. This allows it to catch hardware-specific issues such as sensor types cleared on non-digitized channels, outputs bound without signal selection, modules excluded from polling, and mismatched variable captions in UI elements. The engine uses streaming parsing to handle large files efficiently; a 29 MB export consumes approximately 47 MB of memory and processes in about two seconds. It distinguishes between warnings and critical findings based on format capabilities—for instance, "nothing writes this alarm" is raised to critical severity only when visualization bindings are available to confirm the lack of usage. Who it helps Automation engineers and PLC programmers working with CODESYS-based systems benefit from catching integration bugs before deployment. Teams using multiple vendor platforms (Beckhoff, WAGO, Schneider) can use a single rule set since all rely on the underlying CODESYS runtime structure. It is particularly useful for validating complex projects where manual review of hundreds of POUs and global variables is impractical. Getting started Two methods are documented. First, use the hosted service at plc-linter.com by uploading a project export; no signup is required for basic reports. Second, run locally: Windows users download plc-lint.exe from GitHub releases and drag-and-drop XML or export files. Cross-platform users run python cli.py project.xml. Local execution explicitly avoids network calls, enforced by internal tests replacing socket functionality. A live sample report is available at plc-linter.com/demo. Limits and costs The source describes the tool as free. The MIT license permits open-source use. However, specific pricing tiers for advanced hosted features (sharing, history, certificates) are not detailed in the provided evidence. Certain checks do not apply to .export files due to structural differences; watchdog and duplicate-Modbus-address rules remain silent for these inputs rather than guessing. Analysis depends on export completeness—missing task configurations limit some diagnostics. Source links Official repository Project documentation
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