The EL3751 EtherCAT terminal from Beckhoff Automation (Savage, MN) provides measurement as part of a standard I/O system. It acquires data at 10,000 samples per second and provides measurement accuracy of ±0.01% for most interfaces at 25 °C, and 24-bit resolution. Parameterization options are available for the analog input, which supports measurement functions U, I, R, DMS (strain gauge), and RTD. Optionally, measured data can be transmitted to higher-level automation devices with oversampling. The integrated distributed clocks ensure synchronized sampling across the EtherCAT system. Available measurements include voltage, current, resistance, electrical resistance, RTD, strain gauge/load cell, and potentiometer.

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This article first appeared in the August, 2016 issue of Test & Measurement Tech Briefs Magazine.

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