S7-1500 and OB82 and Diagnostic Interrupts

Lare said:

if you need wire break of AI-channel, I would go with comparing raw data of channel.
0-27648 is normal range for 4-20.
It is stated on AI-manual which numbers are for mA and Volts for outside normal range.
If would check if channel goes below 3ma or above 20,5ma.


OB-blocks are old way for TIA. Not sure when system blocks for checking errors are added. Pretty sure that they didn't exist first on TIA.

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Lare said:

maybe this helps:
https://support.industry.siemens.co...cs-with-s7-1500-and-tia-portal?dti=0&lc=en-DE

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