Using built-in functions in expressions, Math functions, Using built-in functions in expressions – 11 – Rockwell Automation FactoryTalk View Site Edition Users Guide User Manual
Page 557: Math functions – 11
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The expression evaluates to 1 (true).
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NOT tag1 AND tag2>tag3 ** 2
is evaluated in this sequence:
1. NOT tag1=0
2. 0 AND tag2=0
3. tag3 ** 2=100
4. 0>100=0
The expression evaluates to 0 (false).
Using built-in functions in expressions
The following sections describe the built-in functions you can use in FactoryTalk
View SE expressions.
Many of the built-in functions check for specific true and false conditions. If the condition
is true, the expression returns a value of 1. If the condition is false, the expression returns
a value of 0.
Math functions
Use the built-in math functions to calculate the square root, log (natural or base 10), or
trigonometry ratios (in radians or degrees) of a tag or expression.
This function
Returns this value
SQRT (expression)
The square root of the expression
LOG (expression)
The natural log of the expression
LOG10 (expression)
The base ten log of the expression
SIN (expression)
The sine of the expression in radians
COS (expression)
The cosine of the expression in radians
TAN (expression)
The tangent of the expression in radians
ARCSIN (expression)
The arc sine of the expression in radians
ARCCOS (expression)
The arc cosine of the expression in radians
ARCTAN (expression)
The arc tangent of the expression in radians
SIND (expression)
The sine of the expression in degrees