The Festo CPX-AP-I-4DI4DO-M8-3P is a CPX series expansion module providing four digital inputs and four digital outputs, terminated with M8 3-pin connectors. It sits within the PLCs & HMIs category as a PLC expansion module, designed for distributed I/O on a CPX automation platform.
Connector Variant Consideration
The closest functional peer is the CPX-AP-I-4DI4DO-M12-5P, which shares the same 4-input, 4-output digital I/O count but uses M12 5-pin connectors instead of the M8 3-pin. The M8 variant on this module fits applications where space constraints or existing harnesses specify the smaller connector format. Panel wiring designed for the M12 version will require an adapter or harness change to accommodate the M8 footprint.
Deployment Context
As a CPX-series slice, this module mounts on the CPX backplane and communicates over the CPX system bus. It is suited for distributed I/O in valve terminals or remote I/O cabinets where digital sensor and actuator signals need to be brought into the fieldbus network via the CPX gateway.
