Overview
Valuoty-industry-plc-4B is a 4 billion parameter agentic assistant model developed by ICSFR-HF-ORG-01, specifically designed for industrial PLC programming. Fine-tuned using QLoRA with Axolotl, it specializes in generating and understanding logic across the five IEC 61131-3 languages: Structured Text (ST), Ladder Diagram ASCII (LD), Function Block Diagram ASCII (FBD), Instruction List (IL), and GRAFCET/SFC.
Key Capabilities
- Domain Focus: Industrial automation and PLC engineering.
- Skills: Instruction following, code generation, refactoring, SFC design, diagnostics, and troubleshooting.
- Language Support: Comprehensive coverage of ST, LD (ASCII), FBD (ASCII), IL, and SFC/GRAFCET.
- Deployment: Lightweight adapter suitable for edge and on-premise setups.
Performance
On an Industry PLC MMLU-style benchmark, Valuoty-industry-plc-4B achieves 58.2%. This performance surpasses generalist baselines such as Llama 3.1-18B (48.8%) and Mistral Small-24B (48.9%), and significantly outperforms Qwen2.5-32B (42.4%) and Valuoty-3B (51.4%), demonstrating its specialized effectiveness in PLC reasoning tasks.
Use Cases
This model is ideal for developers and engineers working with industrial control systems who need assistance with:
- Generating PLC code snippets in various IEC 61131-3 languages.
- Refactoring existing PLC logic.
- Designing Sequential Function Charts (SFC).
- Troubleshooting and diagnostics in industrial automation contexts.
Limitations
Users should be aware that outputs may require adaptation to vendor-specific syntax (e.g., Codesys, TIA Portal). Ladder/FBD ASCII outputs are illustrative and require verification in an IDE. The model is not a substitute for standards compliance, FMEA, or safety validation (IEC 60204-1, ISO 13849).