Calculation Engine Logical Comparison Functions

The following are functions for logical comparison to be used in the OAS Calculation Engine:

AND

Logical operator placed between two boolean expressions or values. Returns true if both evaluate to true.

Example:

[Tag1.Value] & [Tag2.Value]

IF

If, Then, Else. Returns second parameter (Then) if first parameter is true, returns third parameter (Else) if first parameter is false.

Parameters:

  • Condition to evaluate
  • Value to return if condition is true
  • Value to return if condition is false

Examples:

IF([Tag.Value],100,200)
IF([Tag1.Value],[Tag2.Value],[Tag3.Value])
IF([Tag.Value],"ON","OFF")

NOT

Logical operator placed before a boolean expression or value. Returns the opposite boolean value of the expression.

Example:

![Tag1.Value]

OR

Logical operator placed between two boolean expressions or values. Returns true if either evaluate to true.

Example:

[Tag1.Value] | [Tag2.Value]