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Entry type: Product note Entry ID: 17966469, Entry date: 12/17/2003
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SM 331-7SF00 Ex AI Module, Release 07, Product Information

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As a result of tolerances of electronic components, the SM 331-7SF00 Ex analog input module with product release 07 can exhibit a malfunction of the measuring value processing, leading to incorrect measuring values. There will be no error signal from the module. Up to now, this problem has only been observed in the course of internal tests. It can be corrected by upgrading the SM 331-7SF00 Ex analog input module to product release 08.

If one of your modules is affected by the problem, please speak to your SIMATIC contact at your local Siemens office about upgrading.

You will find the SIMATIC contact for your region in the following Internet link:

English: http://www.ad.siemens.com/partners
German: http://www.ad.siemens.de/partner

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https://www.siemens.com/cybersecurity#Ouraspiration.