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Function Blocks
BOOL Boolean Logic Function Block
Revision 11
HC900 Hybrid Control Designer Function Block Reference Guide
87
2/07
TIP
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Use only the following list of words and characters in an equation:
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AND - logical AND,
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OR - logical OR,
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NOT - unary NOT,
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XOR - exclusive OR, or
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"( )", "[ ]", and "{ }" parentheses - three types.
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A left parenthesis must have a matching right parenthesis.
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The matching parenthesis must be the same type, that is, "( )", "[ ]", or "{ }".
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Parentheses may be nested to any depth.
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Logicals AND, OR, and XOR must have a left and right operand.
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Unary NOT must have one operand to the right, and the operand must be enclosed in
parentheses; for example, NOT(G).
Examples: (A*B)+C,
(A+notB+C)*notD
Block properties
Double click on the function block to access the function block properties dialog box.