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All,
I am having issues with implementing a Combobox on a Content area in a TwinCAT HMI project. I am unsure as to what I am doing wrong, but I have a combobox where I select the color I want my car to be.
I have created data for the combobox as shown and data bound a mapped variable back in the PLC program:
It just does not change at all. I don't know if this has to do with the use of the combobox on a content panel instead of an actual view?
-Evan H.
@twincontrols I tried your suggestion but it did not work. Also, in my program SelectedValue is a STRING. Is that going to work with an integer type. In your example, you use an INT, in mine I use a UDINT.
What is weird is that if I make any change to the Action of the Controls on the Combobox, it will write to the variable in the PLC program in that one instance. Once I leave that content and go to a different content view in the HMI program, then come back it does not work anymore.
I am going to make a whole new program and try again.
Okay I now have it working. I am not sure what was wrong with my original. I know that in my list I set the SelectedValue data type to a STRING instead of an INT, so maybe that is why, but again I don't know for sure.
Thanks again for all the help, Ilyas.
-Evan H.