EL18xx Digital HD Input/Output Terminals Documentation

This document provides technical documentation for the Beckhoff EL18xx series of digital high-definition input/output terminals, including product descriptions, technical data, LED indicators, and connection details for models such as EL1804, EL1814, EL1808, EL1809, EL1819, EL1852, EL1859, EL1862, and EL1872. It also covers safety instructions, version identification, and application notes for frequency measurement.