About Calculation Formulas
The Historian Administrator contains an Insert Function Wizard designed to help you with "building" syntax within your calculation formula. Using the wizard is optional. You can type in any valid VBScript code directly into the Calculation pane. You can also cut and paste code into the Calculation pane from any other text source. For more information, refer to Building Calculation Formulas Using the Wizard.
Note: You can open the Calculation pane in a separate, larger window, by selecting the Window button or double-clicking within the pane. The larger code window makes it easier to create your formula.