Festo’s Configurable Digital I/O Module Simplifies Decentralized I/O Design | Doskee Automation

Why Decentralized I/O Needs to Be Configurable

As automated machines grow more capable, the amount of decentralized I/O on a machine keeps climbing. The conventional approach is to use dedicated input modules for inputs and dedicated output modules for outputs. That means more part numbers to stock, more drawings and wiring to engineer, and more points to troubleshoot on the floor — every module variant and every connection point is a cost you can see on paper.

Festo’s new configurable digital I/O module for the CPX-AP-I decentralized I/O platform is aimed squarely at that pain point. The core idea is simple: stop forcing machine design to work around fixed input/output ratios, and instead let a single module adapt to what the application actually needs.

16 Channels, Split However You Need

The CPX-AP-I configurable digital I/O module offers 16 channels, each of which can be configured independently as a digital input or digital output to match application requirements. You can configure it channel by channel, divide it into eight inputs and eight outputs, or dedicate all 16 channels to output functions. Selected output channels provide up to 500 mA for high-current devices.

The module ships with a default 16-input configuration for immediate installation, while output functions are enabled through software parameterization — no rewiring required. Individual LED indicators on each channel simplify commissioning and troubleshooting with clear operating and diagnostic status at a glance. The M12 version is available now.

One Module, More Machine Configurations

The direct benefit of configurability is a single hardware design that covers more machines. Instead of stocking separate 8-in/8-out, 16-in, and 16-out module variants for different machine types, one module now supports a wider range of configurations — reducing the number of variants you must specify, stock, and maintain over the life of a machine.

The module is part of Festo’s CPX-AP-I decentralized I/O platform, which distributes I/O, valve terminals, and IO-Link devices throughout a machine. Supporting up to 80 modules at distances of up to 164 ft (50 m) between modules, the platform reduces wiring, simplifies modular machine architectures, and lets builders expand or reconfigure systems without redesigning the entire control architecture.

CC-Link IE Field Basic Bus Node

Festo has also introduced a new CPX-AP-I bus node supporting CC-Link IE Field Basic, extending the platform’s connectivity into Mitsubishi Electric Automation environments. Widely used throughout Asia, this industrial Ethernet protocol lets machine builders integrate CPX-AP-I decentralized I/O directly into Mitsubishi PLC architecture without additional gateways or custom engineering.

The new bus node allows machine builders to keep the same CPX-AP-I decentralized I/O architecture while changing only the network interface for Mitsubishi Electric systems. The result is less engineering, faster machine adaptation for regional markets, and a common automation platform that supports multiple industrial Ethernet protocols — EtherNet/IP, PROFINET, EtherCAT, Modbus TCP, and now CC-Link IE Field Basic.

Doskee Automation specializes in industrial automation and pneumatic components, offering selection and sourcing support for Festo CPX-AP-I decentralized I/O modules, valve terminals, and related pneumatic products. If you’re dealing with I/O point configuration, reducing machine variants, or integrating with Mitsubishi PLC architecture, please contact us for selection guidance and a quote tailored to your equipment needs.

Reference: Adapted from PneumaticTips “Festo simplifies decentralized I/O design with configurable digital I/O module” by Mary Gannon (2026-08-19)