Subtraction of current variable value and value of the same variable from one hour ago.

Subtraction of current variable value and value of the same variable from one hour ago.

Hi, I would like to display in Numeric Value the subtraction of current variable value and the value of the same variable from one hour ago. The result will change every 10 minutes. The variable is archived in 1 second cycle time. How to implement such functionality?

This is a migrated post! Originally posted on 20.08.2019 by user grzegorz_kaczmarczyk. Please be aware that information can be outdated.