Calculated Parameters#
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Critical Manufacturing MES provides support for Data Collections whereby you can collect quantitative and qualitative data on demand or at various points throughout the manufacturing process.
A Data Collection contains a set of Parameters, which in this context are used to capture the data by allowing you to input the specific values required by the Data Collection. Each Parameter can have multiple Samples, and each Sample can have multiple Readings. Typically, you manually input the data for each Reading, and these values can then be stored as they were provided, or they can be used in a calculation.
Currently, the system allows for calculations that group all the values either by the Parameter or each of its Samples. The following aggregate functions are supported:
| Aggregate Functions | Definition |
|---|---|
| Average | Calculates the average of all the values provided. |
| Maximum | Returns the maximum value of the provided set. |
| Minimum | Returns the minimum value of the provided set. |
| Range | Takes the maximum and minimum values and returns the difference. |
| Standard Deviations | Calculates the standard deviation of the provided set. |
| Sum | Sums all the available values and returns the result. |
Table: Supported aggregate functions
The calculations can use values grouped by Sample (all Reading values for each Sample) or by Parameter (all Reading values from all Samples of the Parameter).
Additionally, the calculation mode Rule is available, and it uses a Rule object of scope EDC. In this case, a Rule must exist and it must reference a DEE Action with the required code to execute the desired calculation.