I put together a tag structure[attachment=1]BrickTags.xml[/attachment] that implements a finite difference model of heat transfer in refractory brick (one dimensional time dependent temperature in cylindrical coordinates). However, I find that one of the expression tags within the structure does not update when one of its base tags is updated. In the attached partial project[attachment=0]Copy_Of_Test1_2016-12-16_1828_partial.proj[/attachment], when the tag “Cp” representing the heat capacity of the refractory is changed, the expression tag “htMultiplier” does not update. The expression tag “M” does update. “Cp” is used to calculate “M” and “M” is used to calculate “htMultiplier”. Other tags such as “A”, “B” and “C” which depend on “M” do update. Any thoughts on how to resolve the issue would be most appreciated. Right now if I change Cp and want “htMultiplier” to update, I have to go into the tag editor and bring up the instance of “htMultiplier” and hit apply. Being new to ignition, I suspect there is something I need to do with respect to the scan class that I use for the expression tags.
I also link this post to an entry in the “requested features” as I am lazy and don’t want to upload the files twice.