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What is Understanding PLC Analog Inputs/Outputs about?
This document provides an overview of analog inputs and outputs for programmable logic controllers (PLCs). It discusses how analog signals are converted to digital values through analog-to-digital (A/D) conversion and how digital values are converted to analog signals through digital-to-analog (D/A) conversion. Key points covered include the concepts of sampling analog signals, quantization error, resolution, and aliasing which can occur if the sampling frequency is too low. Equations are provided to calcul
- Author
- mdkhandave
- Language
- EN