Product Description:

The EPP1111-0000 digital I/O module is produced by Beckhoff as part of the EPP EtherCAT P Box Modules series. It is an EtherCAT P junction that forwards data and power through a single cable, allowing distributed sensors and actuators to connect directly to the fieldbus network. In automation systems, the unit serves as a compact interface that assigns each downstream device a local address, supplies 24 V, and maintains deterministic real-time communication.

The module communicates via the EtherCAT protocol at a line speed of 100 Mbit/s, carried through two P-coded M8 sockets that combine signal and 24 V power pins. Each connector can source up to 3 A, and the internal supply expects 24 VDC, so current balancing must remain within head-end limits. Its body measures 30 × 126 × 26.5 mm, and the plastic shell dissipates minimal heat from the integrated microcontroller. A molded enclosure is rated IP65/IP66/IP67, allowing installation on moving tooling arms exposed to washdown fluids. The bus node publishes identification data over EtherCAT so a controller can read the network topology without manual mapping.

For cabinet-free deployment, the segment distance may extend to 100 m, letting the EPP chain span long conveyors while still meeting timing constraints. The metal coupling nuts are tightened to 0.4 Nm to preserve the polyurethane sealing edge against vibration. During idle periods, the electronics draw only 100 mA from the upstream supply, keeping thermal rise within the limits of the PA6 housing. Process words are exchanged in UINT format, so device variables occupy a fixed 16-bit width. A decimal ID system with three rotary switches assigns values from 1 to 999. The polyamide body and poured polyurethane compound seal joints and absorb impact, while the data bus leaves diagnostic channels available for status monitoring.