Type 0: Definition of Calculations 
Use
You can use this function to perform calculations in the browser-based PI sheet or process manufacturing cockpit . You can, for example, calculate the total quantity of a material consumed in all phases. You can then use a process message to report the calculated value. You can define a variable to pass on the calculated values to a function module, for example.
Use
You can use this function to perform calculations in the browser-based PI sheet or process manufacturing cockpit . You can, for example, calculate the total quantity of a material consumed in all phases. You can then use a process message to report the calculated value. You can define a variable to pass on the calculated values to a function module, for example.
Activities
Activities
When defining calculations, you specify the following information in the process instruction:
A text to be displayed before the calculated value in the PI sheet or cockpit
If required, a variable that refers to the characteristic to be calculated
The message characteristic whose value you want to calculate
The calculation formula to be used to calculate the value
To enter this information, you assign the following characteristics to the process instruction in the order specified below:
Characteristic |
Meaning |
Allowed Values |
PPPI_INPUT_REQUEST |
Text displayed before the formula result |
Any short text |
< PPPI_VARIABLEIn PI sheets only: < PPPI_GLOBAL_VARIABLE |
Variable definition for value calculated: < Variable < Global variable |
New variable namesee: Definition of Variables |
PPPI_CALCULATED_VALUE |
Message characteristic to be calculated |
Message characteristic |
PPPI_CALCULATION_FORMULA |
Calculation formula |
Arithmetic expression;see: Syntax |
Note
In the case of text characteristics (such as PPPI_INPUT_REQUEST), you can insert the value of another characteristic into this text using a text symbol; see Text Symbols in Characteristic Texts .