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S7-200 ADC module EM231
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7rots51



Joined: 17 May 2002
Posts: 1427
Helped: 14
Post27 Sep 2005 11:11   

em231
Hi

This module from siemens have very bad conversion accuracy(resolution is 12 bit but accuracy is 6 bit!!),many bits changing ,is there anyway to filter ADC output?

Please help me to get more accurate result from the ADC.
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Post27 Sep 2005 11:11   

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dqhuy



Joined: 25 Jan 2005
Posts: 27
Post14 Oct 2005 12:48   

s7-200 em231
I usually use this module and it works OK.
Check your hardware and offset, gain calibaration.
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