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SOLVED: Problem creating trend line with array values
Created by: rrautane at: 4/20/2012 7:23 AM (3 Replies)
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| 4/20/2012 7:23 AM | |
Joined: 12/29/2011 Last visit: 11/18/2025 Posts: 17 Rating:
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Hello, I'm doing a project with WinCC Flexible 2008 where I need to log temperatures and compare visually how they are following setpoint values. Basically I need same thingas this thread. I need to implement something like in attached picture. There needs to be setpoint lines drawn with real logged trends. How is this possible? WinCC trend view does not seem to be very flexible regarding input data. Temperatures are logged every minute to SQL-database and getting them to trend view is not a problem. Hard part is getting those setpoint lines drawn. Setpoints are stored to DB in array. I also tried to script line drawing but there is no way to actually draw lines with scripts. Also there is no way to define start and end points for existing lines. Also it seems trend view is always topmost object on the screen and you can not draw anything on top of it. My head is starting to hurt a little bit from running to walls all the time. Any ideas? Risto
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Last edited by: rrautane at: 5/29/2012 7:40 AM |
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| 5/29/2012 7:39 AM | |
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Joined: 12/29/2011 Last visit: 11/18/2025 Posts: 17 Rating:
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I thought to update this thread in case someone has this same problem as I did. I was able to solve my problem with activeX componentcsXGraph.it allows scripted trend line drawing. Attached is a sample graph drawn with csXGraph with pretty much same values as in my first post. This is not optimal solution as I don't like to use third party activeX controls. They may cause incompability problems in future. But at the moment this seems to be best way to achieve what I want. Let's hope Siemens will improve graphing capabilities in future.
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