Siemens presents its Engineering Copilot for TIA Portal, a generative AI assistant that runs beside the TIA Portal engineering environment for factory automation. Linked to drives, PLCs and HMI projects, the copilot generates IEC 61131-3 SCL code, ladder logic, basic visualizations and hardware configurations from natural-language prompts while following customer standards and libraries. It offloads repetitive coding and configuration work so automation engineers can focus on architecture, safety and machine performance. https://www.siemens.com/EngineeringCopilotTIA
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In this demo, Siemens shows how engineers can upload internal guidelines and sample projects so the copilot learns naming conventions, library blocks and preferred patterns. From there, it proposes complete function blocks and commented code, which the engineer reviews, adapts and inserts directly into the TIA Portal project. The same assistant can translate project texts, scaffold a first HMI visualization and assemble a consistent hardware configuration, turning boilerplate tasks into prompt-driven work.
Deep integration with TIA Portal means that once a code block is accepted, the copilot can import it, compile it and let the user execute it on the target controller as part of the normal engineering cycle. Siemens explains that the underlying model is trained on Siemens engineering knowledge, while customer project data stays under the customer’s control and is not reused for training. The copilot also acts as a semantic interface to the Siemens automation portfolio, answering questions and surfacing relevant documentation faster than manual search.
Product portfolio manager Stephan Oops stresses that the first target is repetitive, low-value tasks such as standard function blocks and commenting, not replacing expert PLC engineers. He expects workflows to shift so skilled users spend more time defining behavior, edge cases and safety constraints, and less time typing similar code again and again. Good prompt engineering matters: the clearer the description of the machine and expected behavior, the better the generated SCL, ladder diagrams and test cases will fit real use.
Recorded at SPS 2025 in Nuremberg at the Siemens booth, the conversation places Engineering Copilot for TIA Portal in the broader context of Siemens industrial AI and copilot tools. The vision is to extend assistants from engineering into production optimization and machine design, moving towards a unified industrial AI assistant across the lifecycle. For automation software engineers, that means evolving from line-by-line programming towards orchestrating AI-assisted workflows, validating generated PLC logic and getting machines into production faster.
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