EL1489 EtherCAT Terminal Hardware and Commissioning Guide

This document is the official hardware and commissioning guide for the Beckhoff EL1489 EtherCAT terminal, a 16-channel digital input module operating at 24 V DC with a 3 ms input filter and ground-switching capability. It covers technical specifications, mounting and wiring instructions, EtherCAT communication basics, and step-by-step TwinCAT configuration for both TwinCAT 2 and TwinCAT 3 environments.