single ended versus differetial AI

RY_Guthrie

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R

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Nov 2011

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Las vegas, NV

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263

• Sep 1, 2015

• #1

I am trying to find a simple explanation of the difference between single ended and differential analog inputs. I have read over the Rockwell manual on the analog input module but it really doesn't give a good explanation on how and why I would use either.

 

danatomega

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Mar 2011

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Dayton OH

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• Sep 1, 2015

• #2

Have a quick look at this document:
http://kb.mccdaq.com/KnowledgebaseArticle50277.aspx?Keywords=Analog-Input

 

boneless

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Feb 2008

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OKC

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• Sep 1, 2015

• #3

http://www.plctalk.net/qanda/showthread.php?t=97020

 

widelto

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Jul 2005

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Barranquilla, Colombia

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3,392

• Sep 1, 2015

• #4

May be this can help:
Analog input interfaces can receive either single-ended or differential inputs. The commons in single-ended inputs are electrically tied together, whereas differential inputs have individual return or common lines for each channel. Single-ended modules offer more points per module than their differential counterparts. Depending on the manufacturer, a module may be set to either single-ended or differential mode during software setup using rocker switches.

 

jeffyech

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Mar 2013

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usa

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• Nov 28, 2015

• #5

one other point is that differential signals offer a higher noise immunity than single ended due to the isolation of wiring.