Hello, I hope this finds all of you well.
One of our new biomass power plants has around 100 tags. They use around 10 of those tags for billing.
When we set up the historian we asked them how often they wanted the data to collect from the Kepware interface via PICU.
They agreed that .25 seconds was fine. 100 tags, most compressed. The primary archive is 15% full and is 158 days old. So drive space will not be an issue.
Now they are running queries against the data from Rockwell Vantage Point. Which is Rockwell's version of Coresite.
The query's are taking several minutes because the data was set up to collect every .25 seconds. They want it faster.
They asked if I could change applicable accounting tags to 60 seconds. So I created a duplicate of the original tag, added "_min" onto the end of it and gave the applicable tags a scan class of 60 seconds. From yesterday forward they are only collecting at 60 second intervals.
That was fine, but now they want me to backfill the new cloned tags that I created going back to the start date of the original tag.
Running PI 2012
Questions:
1. Can I create events prior to the creation of the clone tag?
2. Am I approaching this request\issue correctly?
I am a control systems admin. I don't have the knowledge and experience that this group does or that the average PI admin does. I babysit 64 servers across 22 plants. I build all the systems and interfaces then install them across the US. I maintain the windows machines as well as PI basics (health check stuff). Thus system admin, not a true PI admin.
Thank you so much for your time,