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Make statistics form values stored in User Archive.
Created by: Tronrud Service at: 2/13/2008 12:09 PM (1 Replies)
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| 2/13/2008 12:09 PM | |
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Is it possible to connect a trend control to values in user archive columns or is it any other way to display statistics form values stored in user archive. |
| 2/13/2008 12:49 PM | |
Joined: 9/27/2006 Last visit: 12/11/2024 Posts: 12302 Rating:
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hello tronrud; You have 2 questions: 1) is it possible to use archived values in WinCC trend control Yes, easily, if thetags exist in WinCC Explorer and if a Process Value Archive has been created Here are some extracts of the WinCC_Basis v. 6 manual on that subject: 10.3.3 Display of Process Values in Graphs For the graphical display of tags, WinCC provides the option of displaying tagvalues as trends. The trend type to be used can be selected. The values to bedisplayed may be either current or archived.A tag's course is displayed in runtime by an ActiveX Control, which is set up in the"Graphics Designer". Online tags or archive tags can be displayed. 10.3.3.2 Time Range of a Trend Display With regard to the time ranges to be displayed, there are a number of ways topresent a trend display of tags: Static display of a trend Based on the archived values, this form of display can present the course of a tagwithin a defined time interval.The static display type is configured in the "Time Axis" tab of the "Properties"dialog by deactivating the "Update" option. The time range to be displayed is seteither by entering a start time and a time range. by entering a start time and an end time. by entering a start time and the number of measurement points which are to bedisplayed. NoteThis type of display can only be used for archive tags. 10.3.5.4 Configuring WinCC Function Trend Control Introduction The steps you need to take in order to configure WinCC Function Trend Controlare dependent on the tags you wish to display. Displaying online tags_ The tags you wish to display need to be configured in WinCC Explorer. _ Link the WinCC Function Trend Control to a Graphics Designer picture and edit the properties of the ActiveX Control. Displaying archive tags 1. The tags you wish to display need to be configured in WinCC Explorer. 2. Use the Archive Wizard to create a process value archive. 3. Configure the process value tags it will contain. 4. Link the WinCC Function Trend Control to a Graphics Designer picture and editthe properties of the ActiveX Control. Displaying values from user archives 1. Create a user archive. 2. Configure the fields it will contain. 3. Link the WinCC user archive table element to a Graphics Designer picture and edit the properties of the ActiveX Control. 4. Link the WinCC Function Trend Control to a Graphics Designer picture and edit the properties of the ActiveX Control. 5. Enable runtime and input the display values into the user archive or import them from a csv file. 2) can youimplement statistical analysis onWinCC archived values: Siemens offers an add-on package to WinCC v. 6.2named ProcessMonitor that allows you to design special archiving parameters for your tags, and to create your own statistical calculations on these tags. It also has tools for the graphical presentation of the results. Follow this link for more details, if you are interested. http://support.automation.siemens.com/WW/view/en/26679792 Hope this helps, Daniel Chartier |
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