Festo is expanding its approach to decentralized automation with a configurable digital I/O module, addressing the growing demand for flexible machine architectures and simpler field-level integration. The development is part of a broader trend toward moving automation functions closer to machines while reducing wiring, cabinet space and engineering effort.

Flexible I/O for Changing Machine Requirements

Modern machines increasingly combine sensors, actuators, valves, drives and intelligent devices. As machine configurations become more complex, automation engineers need I/O systems that can adapt to different applications without requiring extensive hardware redesign.

Festo’s configurable digital I/O approach allows engineers to adapt I/O functionality to application requirements rather than relying entirely on fixed configurations. This can be useful for OEMs developing machines with multiple variants or customers requiring different signal arrangements.

The concept supports the broader movement toward modular and decentralized automation, where field devices can be installed closer to the machine instead of routing every signal back to a central control cabinet.

Reducing Wiring and Cabinet Complexity

Traditional centralized architectures can require substantial amounts of wiring between sensors, actuators and control cabinets. For large machines, this can increase installation time and make troubleshooting more complicated.

Decentralized I/O can shorten field wiring by positioning I/O modules closer to the equipment they control. This can reduce cable requirements and make machine layouts more flexible.

Festo has also demonstrated decentralized platforms such as VTUX, which combines pneumatic control, vacuum generation and I/O in a modular IP67-rated solution. Such architectures are designed to bring automation functions directly to the application while reducing cabinet requirements.

Multi-Protocol Connectivity

Connectivity is another important part of modern decentralized automation.

Machine builders increasingly need to support different industrial networks depending on the customer’s PLC or automation platform. Festo has been developing multi-protocol solutions capable of operating across environments such as PROFINET, EtherNet/IP and EtherCAT.

This approach allows OEMs to standardize machine hardware while adapting communication technology to individual customer requirements. Recent demonstrations of the Festo AP platform have highlighted this ability to connect different control environments through a flexible I/O architecture.

Supporting Modular Machine Design

Configurable I/O can also contribute to modular machine development.

Instead of creating a completely different control architecture for every machine variant, engineers can build standardized hardware structures and configure the I/O according to the application. This can simplify engineering, spare-parts management and future machine modifications.

The concept fits well with current manufacturing trends toward smaller production batches, customized products and frequent machine changes.

Digitalization at the Field Level

Decentralized I/O is also important for Industry 4.0 applications. Field-level devices can provide operational information that can be used for diagnostics, condition monitoring and production optimization.

Festo’s broader automation portfolio combines remote I/O, electric drives, pneumatic systems and intelligent connectivity, creating opportunities to connect field equipment with higher-level PLC and industrial software platforms.

Outlook

The development of configurable digital I/O reflects a wider transformation in industrial automation. Control architectures are becoming more decentralized, modular and networked, while machine builders are looking for ways to reduce engineering time and simplify commissioning.

For PLC engineers and system integrators, flexible I/O can provide greater freedom when designing machine architectures. Combined with multi-protocol communication and intelligent field devices, decentralized automation can help manufacturers build systems that are easier to expand, troubleshoot and adapt to changing production requirements.

Festo’s latest developments demonstrate how the I/O layer is becoming an increasingly important part of flexible automation, connecting sensors and actuators directly with modern PLC, motion-control and industrial networking systems.