ABB ControlMaster CM15 User Manual page 55

ControlMaster CM15
Universal process indicator
...Functions / ...Math Blocks / ...Block Type
Equation Setup:
Source 1 (2)
Source 1 (2)
Constant
Operator 1 (3)
End
Add
Subtract
Multiply
Divide
Low Select
High Select
Median
IM/CM/I–EN Rev. D
1
/ DIN
8
The source of the first operand in the equation (any analog or digital signal or user-defined constant).
Sets the constant value to be used.
Note. Applicable only if Source 1 is assigned to one of the Constants.
Terminates the equation.
Standard arithmetic functions.
Result is the lower / higher of the 2 operands.
If Median operators are used the median value calculated is dependent on the number of operands.
The median value of 2 operands is their mean value.
The median value of 3 operands is the value of the middle operand when the operands are sorted
into ascending order.
The median value of 4 operands is the mean value of the 2
are sorted into ascending order.
7 Advanced Level
nd rd
and 3 operands when the 4 operands
53