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data logging not appear in historical trends during RunTime in Wincc unified

Created by: mostafa@ at: 3/17/2022 10:00 AM (4 Replies)

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3/17/2022 10:00 AM	Rate (0)
mostafa@ Posts: 1 Rating: (0)	First I make Data Logging for some Process values and connect it with trends, but during the RunTime these Logging Data Can not be Appeared in trends Although these data Appeared before , but suddenly it Disappeared. I hope find solution. Thank you in Advanced
mostafa@ Posts: 1 Rating: (0)
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3/18/2022 1:36 PM	Rate (0)
Fred1816 Posts: 271 Rating: (36)	Hello Mostafa, you can use a SQLite Viewer to check if the archive segments do contain any values. If there are values maybe check the configuration of the trend control. If this still does not help maybe try to delete and re-add the trend control to your screen. Best Regards, Fred
Fred1816 Posts: 271 Rating: (36)
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3/22/2022 3:35 PM	Rate (0)
rdoliveira Platinum Expert Joined: 4/26/2012 Last visit: 1/9/2026 Posts: 1657 Rating: (191)	Hi, Unified V17 upd3. I have the same problem with Alarm Logs, on an MTP1200. By RT WebRH it works. LINK to another post.
	"Always make a backup before performing any tests and check the best time to do so. Obrigado.
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3/22/2022 4:30 PM	Rate (0)
rdoliveira Platinum Expert Joined: 4/26/2012 Last visit: 1/9/2026 Posts: 1657 Rating: (191)	Fred1816 Hello Mostafa, you can use a SQLite Viewer to check if the archive segments do contain any values. If there are values maybe check the configuration of the trend control. If this still does not help maybe try to delete and re-add the trend control to your screen. Best Regards, Fred Hello, yes I opened the MTP1200 file, with SQLite viewer and there is no archived data. In the PG file running RT WebRH has data. Yes I created a new control alarm. What can I check, to know why, not be saving, into the MTP1200 database?
	Last edited by: rdoliveira at: 03/22/2022 16:35:56 "Always make a backup before performing any tests and check the best time to do so. Obrigado.
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3/22/2022 8:04 PM	Rate (0)
rdoliveira Platinum Expert Joined: 4/26/2012 Last visit: 1/9/2026 Posts: 1657 Rating: (191)	In this manual, LINK is very complete, well explanatory and with images for better understanding. However, I didn't find help to know why, of not saving, the data in the database, in an MTP1200. I read that the option to be SQLite is default and you can't choose another option in an MTP. Attachment 109782859_WinCC_Unified_Logging_DOC_V1.0_EN.pdf (917 Downloads)
	Last edited by: Jen_Moderator at: 03/23/2022 10:14:10 Added PDF as an attachment. "Always make a backup before performing any tests and check the best time to do so. Obrigado.
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