Industrial Motor Control
Industrial Motor Control
7th Edition
ISBN: 9781133691808
Author: Stephen Herman
Publisher: Cengage Learning
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Chapter 55, Problem 1RQ
To determine

The difference between the analog input and the digital input.

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Explanation of Solution

There are two types of input that are given to Programmable logic controller, the analog input and the digital input.

The difference between the analog and the digital input is shown in Table below.

Analog inputsDigital inputs
Analog inputs are the signal that are continuous and changes with the timeDigital inputs are discrete time signals and dot changes with the time.
Analog inputs are represented by sine waves.Digital inputs are represented in square waves.
The bandwidth consumption is lessThe bandwidth consumption is high
Analog inputs are stored as a wave forms.Digital inputs are stored as binary bits.
Cost of Analog input is low.The cost is high.

Thus, the difference between the AC input and the DC input is explained.

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