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| Function | Meaning |
|---|---|
| None | No function. |
| Average * | Arithmetical average of all archive object values. |
| W-Average * | Weighted arithmetical average of all archive object values. |
| Integral | Time is integral to historical values. |
| Sum | Sum of archive object values. |
| Maximum | Maximum of archive object values. |
| Minimum | Minimum of archive object values. |
| Count | The number of archive object values. Note: by default, only valid values are taken into account. If Validation criteria = 0%, invalid values are also taken into account - but never values with the archive flag Stop, Block, Deleted. |
| Filter | Applying a filter for value storing in the statistical archive. |
| Increment | If the newer value is greater than the older one, then the difference between the values, otherwise the newer value (the function is useful to process counter values that overflow and start from zero again). |
| Delta | Delta between values. Parameter (Compare value) – the weight of impulse. The result will be the impulse multiplied by its weight. A weight of 1 will ensure standard behavior. |
| EcoAvg | Average of the object values within the elapsed time period (Period parameter in Time parameters tab) according to the methodology based on flags of individual values entering the statistic. The same purpose is fulfilled by the function %EcoAveR, which is implemented for eval tags. |
| GT Time (>) | The function calculates the time, during which the value of the historical value was greater than the entered constant (Compare value). |
| GE Time (>=) | The function calculates the time, during which the value of the historical value was greater or equal to the entered constant (Compare value). |
| LT Time (<) | The function calculates the time, during which the value of the historical value was lower than the entered constant (Compare value). |
| LE Time (<=) | The function calculates the time, during which the value of the historical value was lower or equal to the entered constant (Compare value). |
| Maximum in the time interval | Obsolete - do not use! |
| Minimum in the time interval | Obsolete - do not use! |
| Number of local maximums | The number of local maximums in a given time interval. |
| Number of local minimums | The number of local minimums in a given time interval. |
| Sum of positive values | Sum of positive values of the historical value. |
| Sum of negative values | Sum of negative values of the historical value. |
| Average of positive values | Arithmetical average of positive values of the historical value. |
| Average of negative values | Arithmetical average of negative values of the historical value. |
| Sum of increments | Sum of increments for a given time interval. If the new value is less than the old value, the increment is 0. Parameter (Compare value) – the weight of impulse. The result will be the impulse multiplied by its weight. A weight of 1 will ensure standard behavior. |
| Time slice** | Object value in given time moments. |
| Sample standard deviation | The function calculates the sample standard deviation of all values of the archive object. |
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