BiMath (BBiMathBlock)

This component provides a two-operand math expression. This block requires both operands (inputs) and supports both value and trend requests.

For trend requests, at least one of the operands must be a trend.

Figure 188. BiMath properties

To view these properties, double-click the block on the Wire Sheet or the block name in the Nav tree.

Property	Value	Description
Out	read-only value slot	Outputs the result of the two inputs using the configured function.
In 1	operand	Defines the first operand used in the expression. Links from the output of other logic blocks or data sources to supply one or more input values to another logic block.
Operator	drop-down list (defaults to `Add`)	Defines the function to perform. `Add` sums `In1` and `In2`. `Subtract` calculates the difference between `In1` and `In2`. `Multiply` calculates the product of `In1` and `In2`. `Divide` divides `In1` (dividend) by `In2` (divisor) `Modulo` Outputs the remainder after dividing `In1` by `In2`. Exponent raises `In1` (base) to the power of `In2` (exponent). `Min` calculates the minimum value between `In1` and `In2`. `Max` calculates the maximum value between `In1` and `In2`. `Avg` calculates the average of `In1` and `In2`.
In 2	operand	Defines the second operand used in the expression. Links from the output of other logic blocks or data sources to supply one or more input values to a logic block.

Example

Consider a numeric point with a history for electrical power identified by hs:power and a:a marker tags, and a second numeric point for floor area with a value of 12,500 identified by hs:area = 12,500 and a:a marker tags. An algorithm with a Bi Math Block may calculate power density (kw/ft2) by dividing the hs:power data source by the hs:area data source.

Figure 189. Bi Math algorithm

A control point with an Analytic Proxy Ext configured to use the alg:BiMath algorithm displays the calculated power density value. Power value = 857.5 KW, Floor Area = 12,500 ft2: 857.5 / 12,500 = 0.07 KW/ft2. The result displays in the point’s Out slot.

Figure 190. Result