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How to get the important info when OB86 run ?

11/22/2024 1:41 AM	Rate (0)
welkin5952 Posts: 47 Rating: (1)	The system have multi IM467. The Diagnostic Buffer can't save all of the infos when one station Failure. We want to save the important infos (DP master system ID:17 and the affected DP slave station number:31). How to program the OB86 ? Attachment Image 2.png (261 Downloads)
welkin5952 Posts: 47 Rating: (1)
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11/22/2024 7:45 AM	Rate (0)
Willybong Silver Member Joined: 2/11/2015 Last visit: 1/8/2026 Posts: 515 Rating: (36)	Hi, Open the OB86 and look the static values that it have inside. With them and the OB86_HELP you could resolve it.

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This contribution was helpful to 1 thankful Users qwazee

11/22/2024 8:40 AM	Rate (0)
qwazee Platinum Expert Joined: 3/30/2020 Last visit: 12/11/2025 Posts: 5656 Rating: (1083)	Willybong Hi, Open the OB86 and look the static values that it have inside. With them and the OB86_HELP you could resolve it. Addendum per attachment Attachment Rack failure organization block (OB 86) (S7-300, S7-400).pdf (530 Downloads)
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11/29/2024 12:11 AM	Rate (0)
welkin5952 Posts: 47 Rating: (1)	Thanks. I get the DP address from LB11, and fault rack diagnos address from OB86_MDL_ADDR.
welkin5952 Posts: 47 Rating: (1)
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This contribution was helpful to 1 thankful Users qwazee

11/29/2024 11:50 AM	Rate (0)
Piotr.M Platinum Expert Joined: 6/24/2013 Last visit: 11/14/2025 Posts: 1696 Rating: (433)	OB is called once when event occurs so if you want to use data later you can create a DB and fill in data in the said OB block. this will allow to see data in monitoring

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