Rockwell-automation Logix5000 Controllers Structured Text Programming Manuel d'utilisateur télécharger pdf (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

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Rockwell-automation Logix5000 Controllers Structured Text Programming Manuel d'utilisateur Page 15