Rockwell Automation Logix5000 Controllers Structured Text Programming Manual - Manual (Page 15)

Publication 1756-PM007D-EN-P - November 2012 15
Program Structured Text Chapter 1
Use Arithmetic Operators and Functions
You can combine multiple operators and functions in arithmetic expressions.
Arithmetic operators calculate new values.
Arithmetic functions perform math operations. Specify a constant, a
non-boolean tag, or an expression for the function.
To Use this operator Optimal data type
Add + DINT, REAL
Subtract/negate - DINT, REAL
Multiply * DINT, REAL
Exponent (x to the power of y) ** DINT, REAL
Divide / DINT, REAL
Modulo-divide MOD DINT, REAL
For Use this function Optimal data type
Absolute value ABS (numeric_expression) DINT, REAL
Arc cosine ACOS (numeric_expression) REAL
Arc sine ASIN (numeric_expression) REAL
Arc tangent ATAN (numeric_expression) REAL
Cosine COS (numeric_expression) REAL
Radians to degrees DEG (numeric_expression) DINT, REAL
Natural log LN (numeric_expression) REAL
Log base 10 LOG (numeric_expression) REAL
Degrees to radians RAD (numeric_expression) DINT, REAL
Sine SIN (numeric_expression) REAL
Square root SQRT (numeric_expression) DINT, REAL
Tangent TAN (numeric_expression) REAL
Truncate TRUNC (numeric_expression) DINT, REAL