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Anonymous Poster #1

Difference Between Analog Output vs Digital Output and Analog Input vs Digital

12/06/2011 11:35 AM

In Plc what is the difference between analog out vs digital output and sample device and

digital input vs analog input and its sample
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lyn
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#1

Re: difference between analog output vs digital output and analog input vs digital i

12/06/2011 11:47 AM

have you tried Google?
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redfred
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Re: difference between analog output vs digital output and analog input vs digital i

12/06/2011 11:50 AM

The difference between analog and digital signals is so fundamental of a question that I really doubt you will understand the answer, but I'll try.

At any instance in time a typical digital signal can only be ON or OFF. The only exception is what's known as a tri-state digital signal that will be ON or OFF or X (not connected). An analog signal can be any value for an input and any value in a certain range for an output.

I recommend that you ponder my signature line and decide if you understand it.

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