# T-IA Connect > The API Bridge & AI Connector for Siemens TIA Portal T-IA Connect is a professional Windows desktop application that bridges Siemens TIA Portal with modern software workflows. It wraps the Siemens TIA Portal Openness API into a documented REST API, exposes a native Model Context Protocol (MCP) server for AI agents, and includes AI-assisted engineering tools that run locally on the user's Windows workstation. T-IA Connect is designed for automation engineers, system integrators, OEMs, commissioning teams, maintenance teams, and industrial DevOps workflows. It can automate project creation, block generation, tag management, compilation, simulation, documentation, reporting, and integration tasks while keeping project data on the local machine unless the user deliberately chooses a cloud AI provider. ## Key Features - **REST API for TIA Portal**: HTTP/JSON interface to TIA Portal Openness for projects, devices, blocks, tags, UDTs, compilation, export, simulation, HMI and diagnostics workflows. - **MCP Server**: 393 MCP tools currently listed in the website reference data, allowing AI clients such as Claude Desktop, Claude Code, Cursor, Windsurf, VS Code and custom agents to interact with TIA Portal through the open MCP protocol. - **AI-Assisted Engineering**: Connect Claude, ChatGPT/OpenAI, Gemini or local models through BYOK (Bring Your Own Key / Bring Your Own Model). T-IA Connect does not provide hosted AI keys or AI servers. - **Context-Aware PLC Code Generation**: AI can read project context such as UDTs, tags, block interfaces and hardware before generating SCL, LAD, FBD or GRAPH content through T-IA Connect tools. - **On-Premise Architecture**: Runs locally on Windows engineering workstations. Project data does not transit through T-IA Connect servers. - **Professional Automation Features**: PLCSim Advanced control, Custom Documentation/RAG, FAT/SAT reports, OpenAPI/Swagger access, BugTrace support, Source Control, Test Harness, Patterns Library, CI/CD Pipelines and CODESYS V3 workflows, all included in the paid subscription. ## Supported TIA Portal Versions Officially supported Siemens TIA Portal versions: - TIA Portal V17 - TIA Portal V18 - TIA Portal V19 - TIA Portal V20 - TIA Portal V21 TIA Portal V16 may work because Siemens Openness exists on that generation, but it is not officially supported. Feature coverage is lower on V16 and support is not guaranteed for V16-specific issues. STEP 7 Classic is not supported. ## API Endpoints (Summary) The public API covers major TIA Portal automation domains: - Project lifecycle: open, create, save, close, archive and inspect TIA Portal projects. - Device and hardware management: list, add, inspect, configure and compile PLC/HMI devices. - PLC blocks: create, read, update, export, compile and document OB, FB, FC, DB and UDT structures. - Tags and data: create, import, export and manage PLC tags, constants, UDTs and watch tables. - HMI/WinCC: create and configure screens, tags, alarms, connections, scripts and runtime properties. - Simulation and online workflows: PLCSim Advanced control, tag read/write, compilation and guarded download workflows. - Industrial DevOps: Source Control, Test Harness, Patterns Library, CI/CD Pipelines, reports and documentation. The API reference on the website is the authoritative public endpoint catalogue. ## Licensing and Evaluation T-IA Connect is sold through: - **Monthly subscription for new customers**: 100 EUR excl. VAT for the first month, then automatic renewal at 149 EUR excl. VAT/month/license. It can be cancelled from the customer dashboard. - **Subscription via quote configurator**: monthly or annual subscription calculated through the configurator. The standard paid offer includes the former premium capabilities: Source Control/VCS, Test Harness, Patterns Library, CI/CD Pipelines and CODESYS V3. Offline authorization remains separate and disabled by default unless explicitly sold/approved. - **Promotions**: WELCOME-10 is retired and must not be advertised or applied. - **Enterprise plan**: available for large organisations, multi-seat deployments, purchase orders, payment on invoice and custom procurement processes. There is no free Freemium plan, no free trial and no lifetime/perpetual licence for new users. AI provider usage is BYOK: the user supplies their own Anthropic, OpenAI, Google, Mistral or local Ollama-compatible model access. ## Use Cases - Automated PLC project creation from templates - CI/CD pipelines for industrial automation (Jenkins, GitLab CI, GitHub Actions) - AI-assisted SCL, LAD, FBD and GRAPH generation and review - Bulk tag import from Excel/CSV/databases - Automated compilation and validation - Version control and XML/source export for PLC code - PLCSim Advanced test harnesses and simulation workflows - FAT/SAT report generation and technical documentation - Integration with enterprise systems (ERP, MES, PLM) ## Links - Website: https://t-ia-connect.com - Documentation: https://t-ia-connect.com/en/tutorials - Quote Configurator: https://t-ia-connect.com/en/devis - Professional Evaluation / Registration: https://t-ia-connect.com/en/register - Contact: https://t-ia-connect.com/en/contact - API Reference: https://t-ia-connect.com/en/api-reference - API Tutorial: https://t-ia-connect.com/en/tutorials/automate-tia-portal-api - CSV to SCL Guide: https://t-ia-connect.com/en/tutorials/csv-to-scl-code-generation - MCP AI Tools Guide: https://t-ia-connect.com/en/tutorials/ai-copilot-mcp-tools ## Company T-IA Connect is developed by FeelAutom SAS, a French company specializing in industrial automation software and AI-assisted engineering tools.