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Online Trend Control view a archive tag

Created by: ee09140 at: 12/5/2007 1:49 AM (5 Replies)

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12/5/2007 1:49 AM	Rate (0)
ee09140 Posts: 9 Rating: (0)	Hello to all, myquestion is: after havingconclued in the Tag Logging, a tag for temperature and another tag for a device, I show the curve of the temperature through the archive of the tag temperature in control trend online but at the same time I wanted to show in an I/O field or in a label the value of the tag of the device without use a trend curbe, how I canuse the archive of the tag of a device to cruse the data of the curbe temperature and the value of the device? is this possivel? thaks for your attetion ee09140
ee09140 Posts: 9 Rating: (0)
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12/7/2007 11:33 AM	Rate (0)
Danielle Posts: 1275 Rating: (123)	Hi, You're using WinCC, right? Well.. online trend control has a ruler, and you can display the instant values archived on the time where the ruler is located... so if you had curves for both tga,s this way you could see the instant value for both of them! However, without using a trend for the device, the tag is being displayed in a trend, so several values from this tag will be displayed at once... you'll need to "inform" the system of the exact date and time you wish to view the device's value... So... first you need to decide how this date and time will be input, whether it's the value from the ruler on the tag's trend, or a manual input, and then you need to query the database to display the archived value in the I/O Field... Best regards, Danielle
Danielle Posts: 1275 Rating: (123)
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12/7/2007 10:15 PM	Rate (0)
ee09140 Posts: 9 Rating: (0)	ok, I thought about this solution but i was judging was able to be a form more easy to do it. thaks by the help
ee09140 Posts: 9 Rating: (0)
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12/10/2007 2:48 PM	Rate (0)
Danielle Posts: 1275 Rating: (123)	Sorry,.... I can't think of any simple way to do this...
Danielle Posts: 1275 Rating: (123)
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1/8/2008 1:33 PM	Rate (0)
reeva Posts: 2 Rating: (0)	Hi, I have an object on my screen which indicates an analog device. On clicking the device i should be able to get a trend on the screen. This trend should plot a curve corresponding to the tag of that particular device.May be I can give the tag of the device as the object name. I have a VB script for displaying the trend but I do not get the trend... Please help Regards Reeva
reeva Posts: 2 Rating: (0)
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1/10/2008 5:56 PM	Rate (0)
Danielle Posts: 1275 Rating: (123)	Hi, I don't use VB to configure trends... I use C.. with C you could easily pass the archive tag and other configuration parameters... This way, when the user clicked the analog display, the trend window would be displayed and all parameters input already... SetPropChar("Screen_Name", "Trend_Control_Object_Name", "TagName", "Archive_Name\\Archive_Tag_Name"); Best regards, Danielle
Danielle Posts: 1275 Rating: (123)
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