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Old February 10th, 2018, 05:12 PM   #1
Ones_Zeros
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Analog Signal & Digital Signal Explained

Hey
I was wondering if you guys could explain to me how the signal flows on a analog & digital signal.

for example:
Explain the wiring of a 2-wire, 24v, 4-20mA transmitter that measures pressure that goes back into a AI Compactlogix 1769-IF8 PLC card.
-Can you explain loop power & how the signal comes from the transmitter back into the input card?
-Does the Analog Out signal work in the same manner? moving a valve position


Digital signal:
DI vs DO
-Explain the wiring on how a DI & a DO signal travels back into a 1769-IQ16 input card
and a 1769-OV16 output card

thanks for helping
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Old February 10th, 2018, 05:42 PM   #2
Mickey
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Loop Powered.....

https://www.google.com/search?q=expl...hrome&ie=UTF-8

See "Wiring" at link below

http://www.plcs.net/contents.shtml

More input/output info...

http://accautomation.ca/how-plc-inputs-work/

http://accautomation.ca/how-plc-outputs-work/
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Last edited by Mickey; February 10th, 2018 at 06:04 PM.
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Old February 10th, 2018, 09:51 PM   #3
Ones_Zeros
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Thank you!
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