Function Blocks
MATH Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 189
2/07
MATH Function Block
Description
The MATH label stands for Free Form Math.
This block is part of the
Math category.
Function
Read inputs A through H and calculates the output based on specified general purpose calculation. OUT is
calculated from an equation entered here.
• Offers the following general purpose calculation functions:
− abs = addition,
− EXP = exponential (ln
-1
),
− Ln = natural log (log base e),
− Log 10 = log base 10,
− neg (Unary) - = negation,
− sqrt = Square Root,
− + = addition,
− – = subtraction,
− * = multiplication,
− / = division,
− ^ = raised to power of (x
y
)
− ( = left parenthesis,
− ) = right parenthesis, and
• A maximum of either 50 tokens (note 1) per equation or 100 characters per line is allowed, whichever is
first exceeded.
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