Virtual PLC Revolution: Why Manufacturers Are Ditching Hardware for Software Control

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In a groundbreaking move that signals the future of industrial automation, Audi has deployed the world's first virtual programmable logic controllers with safety functions in their Böllinger Höfe body shop. This isn't just another incremental innovation, it's a fundamental shift in how manufacturers approach control systems. Virtual PLCs (vPLCs) are moving traditional PLC functionality from proprietary hardware to software-based environments, running on general-purpose computing devices either on-premises, at the edge, or in the cloud.

The virtual PLC and soft PLC market, valued at USD 865 million in 2023, is projected to grow at a staggering CAGR of over 13% between 2024 and 2032. By 2035, analysts predict the market could reach USD 3.7 billion. More tellingly, IoT Analytics research suggests that

This shift represents more than just technological evolution, it's a response to fundamental industry challenges:

Audi's Edge Cloud 4 Production (EC4P) platform demonstrates what's possible with virtual PLC technology. Partnering with Siemens, Broadcom, and Cisco, Audi has created a system where:

The system maintains the same flow latency and determinism as hardware-based controllers

"For Audi, a requirement for a virtual PLC is that it must run reliably with the same flow latency and determinism as a hardware-based controller," explains David Humphrey in his analysis of the EC4P implementation.

Implementing virtual PLCs requires a sophisticated technology stack that includes: