We are porting our Ignition projects over to a new server. Our old server is running 8.1.48 and the new one is 8.3.1
Among other things we are gathering periodic rain data from a weather station. We have been visualizing this using easy chart and showing the accumulation with digital area. This is nice because it shows discrete steps between measurements.
After porting the template/windows to the new server, instead of plateaus between changes in rain, the data is interpolated between changes.
To the best of my ability I've confirmed that all configuration is the same as before. Can anyone suggest what I'm missing here?
Discrete is the storage deadband mode and doesn't affect how the data is displayed. How do you have your chart configured to retrieve the data? Is interpolation enabled? What are you using for your historian storage on both systems? Has that changed?
Thank you both for your comments. Please see the below screenshots for more details.
Under line rendering I assume you're talking about "render_style"? It is set to 5 for both instances.
Michael - you mention interpolation... Where can I see that setting?
Our historian IS different. We are migrating both the Ignition and SQL DB usage to cloud storage. The data/timestamps for entries match each other (though the assigned tag values are different of course). Is there something on the SQL side I may be missing?
The interpolation would be in the settings for your tag history binding on the Easy Chart. I have no idea why you are showing us what I believe, the second images resolution makes it imposiible for me to see much of anything, is a Cell Update binding for a table? Just changing to a different instance of the database shouldn't cause and issue, assuming that all of your tag settings stayed the same. Likely this is an issue with how you are binging the chart to the data.
Thank you! I got this working correctly by disabling the "Allow Tag History Interpretation". Just a comment: This threw me off because my original/older project had this as enabled. Yes, I am using cell binding updates but I'm sure the configuration is the same on both projects. Could this be due to the difference between 8.1 and 8.3?
I'm happy about this as is, so I'm good. But for future reference if I wanted to selectively allow tag history interpretation (say for some tags but not others), would I just add this property as a column on the cell binding table?
