Here are some key features of the EL1819 digital input module:

Input channels: The EL1819 module has 8 digital input channels that can be used to connect various types of sensors, switches, or other digital signals.

Input voltage range: The module supports a wide input voltage range, typically from 24 VDC to 5 VDC.

Input filtering: It features configurable input filters to suppress voltage spikes, noise, and interference for reliable signal detection.

Diagnostic LEDs: The module is equipped with diagnostic LEDs for status indication. These LEDs help identify the status of each input channel and assist in troubleshooting.

EtherCAT connectivity: The EL1819 is part of the Beckhoff EtherCAT I/O system, which allows for distributed I/O communication over an EtherCAT network. It uses the EtherCAT protocol for fast and deterministic data exchange with the central controller.

Configuration and programming: The EL1819 module can be configured and programmed using the TwinCAT automation software provided by Beckhoff. TwinCAT offers a user-friendly interface for configuring the I/O system, setting up communication parameters, and programming the logic for data processing.