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Problem with slider control

Created by: catalunya1714 at: 3/7/2006 11:08 AM (5 Replies)

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3/7/2006 11:08 AM	Rate (0)
catalunya1714 Bronze Member Joined: 3/7/2006 Last visit: 11/5/2024 Posts: 37 Rating: (2)	Hello, This is my first post here. I'm from Barcelona and I have a problem with the slider control. This control only allow a minimumincrement of 1and I need an increment of 0.1 or 0.01. What can I do to modify this property? Thanks.

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3/7/2006 12:02 PM	Rate (0)
Salma Gold Member Joined: 9/27/2005 Last visit: 11/27/2007 Posts: 1398 Rating: (151)	One way would be to use an event script on the slider instead of linking it to a tag. Steps to do this are: · Create floating point tag, e.g. slider1 · Draw slider on screen with min / max values of 0to 10 and set the step value to 1 · Right-click the slider and select Properties · In the Properties Dialog Window navigate to Events \ Property Topics \ Miscellaneous \ Process Driver Connection \ Change and create a VBS script The script could be for example [code] Sub Process_OnPropertyChanged(ByVal Item, ByVal value) HMIRuntime.Tags("slider1").Write value / 10.0 End Sub [/code] Of course you may need to change the values I have used. The key is to divide the value from the slider and write the result to the tag. I have attached a simple example developed using WinCC V6 SP3 I hope this helps. I am sure there are other ways to do this too. Regards, Salma Attachment slider.zip (131 Downloads)

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3/7/2006 4:02 PM	Rate (0)
catalunya1714 Bronze Member Joined: 3/7/2006 Last visit: 11/5/2024 Posts: 37 Rating: (2)	Thanks for the response. Are there any reason to make the script in the event part? I normally make these type of actionsnear the property. Thanks in advance.

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3/7/2006 4:30 PM	Rate (0)
Salma Gold Member Joined: 9/27/2005 Last visit: 11/27/2007 Posts: 1398 Rating: (151)	A property script needs to have a trigger assigned to it, be it a tag trigger or a cyclic time based trigger. For an event script, the trigger is the event itself. In this instance, moving the slider automatically triggers the Process Driver Connection Change Event. So putting the script here makes sense as the trigger is fired automatically[:D] Of course you could put it on a property script but I personally would not recommend this as it could lead to bad performance. Plus it would not be taking advantage of all the features in WinCC - and boy are there plenty of them ! I hope this answers your question somewhat. Regards, Salma

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3/7/2006 4:34 PM	Rate (0)
catalunya1714 Bronze Member Joined: 3/7/2006 Last visit: 11/5/2024 Posts: 37 Rating: (2)	Thank you very much. Andreu.

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7/19/2010 9:28 PM	Rate (0)
dwilder Posts: 58 Rating: (4)	We too have been looking for a floating point slider bar and this method seems to only offer a partial solution. We also want the slider bar to move to the correct position when the process value changes outside of the slider control.For example, using the controlif a value is entered in the I/O field the slider position does not change and we want it to move to the correct location. Is there another part of the solution that can be applied or perhaps some other solution that will provide a more complete floating point slider? Perhaps there is some simple control that can be constructed to do what we want? Thanks in advance, Dan
dwilder Posts: 58 Rating: (4)
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