Function Blocks
BOOL Boolean Logic Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 87
2/07
TIP
• Use only the following list of words and characters in an equation:
− AND - logical AND,
− OR - logical OR,
− NOT - unary NOT,
− XOR - exclusive OR, or
− "( )", "[ ]", and "{ }" parentheses - three types.
• A left parenthesis must have a matching right parenthesis.
• The matching parenthesis must be the same type, that is, "( )", "[ ]", or "{ }".
• Parentheses may be nested to any depth.
• Logicals AND, OR, and XOR must have a left and right operand.
• 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.
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