Intervals and time value
- Last UpdatedMay 06, 2025
- 1 minute read
The calculated value for each interval is plotted at the start of the interval. For example, if the tag t_min has the following time-value pairs in a 10-minute interval, then the calculated value for this interval is plotted at time 1:00:00.
|
Time |
Value |
|---|---|
|
1:00:00 |
1 |
|
1:01:00 |
2 |
|
1:02:00 |
3 |
|
1:03:00 |
4 |
|
1:04:00 |
5 |
|
1:05:00 |
6 |
|
1:06:00 |
7 |
|
1:07:00 |
8 |
|
1:08:00 |
9 |
|
1:09:00 |
10 |
|
1:10:00 |
11 |
Because the Average, StdDev, and PercentGood functions are time-weighted and the tag is stepped, their calculated values include the tag values at both the lower and upper interval boundary times. For the example above, the calculated value for Average is 6 at 1:00 a.m. and the calculated value for StdDev is 2.872281.
The calculated values for the Minimum, Maximum, and Range, which are event-weighted functions, include the tag values of both the lower and upper interval boundary times. For the example above, the calculated value for Minimum is 1, the calculated value for Maximum is 11, and the calculated value for Range is 10.