Beckhoff EL3356 EtherCAT IO Module

Beckhoff EL3356 EtherCAT Terminal is a 1-channel analog input module designed for direct connection of a resistor bridge (strain gauge) or load cell in 4- or 6-wire configurations, delivering 16-bit resolution on a full-bridge signal. As part of Beckhoff's EL3xxx family, the EL3356 provides a dedicated measurement channel optimized for precise strain-gauge sensing and load-cell applications within EtherCAT networks. To improve accuracy in real-world installations, the terminal uses a bridge-supply feedback approach: the bridge supply voltage (U_V) is fed back to the EL3356 and measured as U_REF, compensating for lead losses and wiring resistance. It supports direct connection of strain gauges and load cells, enabling accurate force, weight, or displacement measurements without additional signal conditioning, and is designed for integration with Beckhoff controllers and TwinCAT software. Variants exist in the EL3356 family (for example EL3356-00x0), and the designation may refer to special versions such as EL3356-0010, reflecting sensor-specific options.