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Alarms and Trends problems, Help pls!!

Created by: schreyer at: 5/24/2006 8:11 AM (6 Replies)

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5/24/2006 8:11 AM	Rate (0)
schreyer Posts: 65 Rating: (3)	[:(][:(] I've got a few WinCC projects on hand now and i'm facing some confusing matters. Can somebody please explain to me how do iconfigure certain alarms/trends to be under longterm archiveandtherest inshortterm archive? What does it means by tag logging fast and tag logging slow?? I'm CONFUSED. [:cry:]
schreyer Posts: 65 Rating: (3)	Last edited by: schreyer at: 5/24/2006 9:02 AM
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5/24/2006 9:07 AM	Rate (0)
Salma Gold Member Joined: 9/27/2005 Last visit: 11/27/2007 Posts: 1398 Rating: (151)	Without meaning to sound condescending, you should really check the manual. Also please search this forum as your questions have already been covered before [:)] The short-term and long-term archive are the same thing in WinCC V6. WinCC V5 differentiated between the two and they still remain for backwards compatibility purposes. Basically ALL alarms go into ONE archive - simple ! Tag Logging Fast is used to store values that are logged at one minute or faster and compresses the data. Tag Logging Slow stores values logged slower than a minute and does not compress the data. This one minute setpoint can be changed but it is recommended against doing this for performance reasons. Good luck with your project and I hope you enjoy using WinCC. Salma

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5/24/2006 10:15 AM	Rate (0)
schreyer Posts: 65 Rating: (3)	Thanks for your help. Actually i did read through the manual and search all ard google for help. Its just that the more i read, the more i am confused by the explanations. Initially i thought that there is no difference between them in this version. Until the point i saw the options to choose tovieweitherthe longterm or shortterm archive in the online alarm control. That is the time i start to think, how is wincc v6 suppose to differential whether the alarm is long term or short term if there is no difference except for the time of capture?? Regards Schreyer
schreyer Posts: 65 Rating: (3)
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5/24/2006 10:32 AM	Rate (0)
Salma Gold Member Joined: 9/27/2005 Last visit: 11/27/2007 Posts: 1398 Rating: (151)	It is a little confusing. Like I say, there is no difference. The two buttons on the alarm control are there for legacy reasons (upgrading from V5 to V6). Having said that there is one small difference between the two views. Selecting the Long Term Archive view will show the Comments button on the toolbar, allowing you to dynamically add/change comments for the message. This button is ONLY visible when you are in the Long Term Archive view, assuming you have enabled it on the Toolbar tab of the alarm control. I hope this clears up your confusion. If not, just ask [:)]

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5/24/2006 10:45 AM	Rate (0)
Humph99 Regular Member Joined: 10/31/2005 Last visit: 8/7/2007 Posts: 21 Rating: (0)	I think that there is another difference.... the short term view is continually updated whereas the long term view remains static, i.e. you get a view from the archive which is not updated when new alarms arrive.

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5/24/2006 10:57 AM	Rate (0)
Salma Gold Member Joined: 9/27/2005 Last visit: 11/27/2007 Posts: 1398 Rating: (151)	oh yes, forgot about that one [:blush:]

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5/24/2006 11:30 AM	Rate (0)
schreyer Posts: 65 Rating: (3)	Thanks a millionguys, Now everything seem to make sense. [;)] Regards Schreyer
schreyer Posts: 65 Rating: (3)
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