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Function Blocks
BOOL Boolean Logic Function Block
86
HC900 Hybrid Control Designer Function Block Reference Guide
Revision 11
2/07
BOOL Boolean Logic Function Block
Description
The
BOOL
label stands for
Free Form Logic.
This block is part of the
Logic
category.
Function
Read digital inputs A through H and calculates the output based on specified Boolean logic function.
•
Offers the following Boolean logic functions:
AND entered as
*
OR entered as +
NOT entered as not
XOR entered as ^
( - Left parenthesis
) - Right Parenthesis
Inputs
A
= Block Input 1
B
= Block Input 2
C
= Block Input 3
D
= Block Input 4
E
= Block Input 5
F
= Block Input 6
G
= Block Input 7
H
= Block Input 8
Output
ERR =
error during execution of the equation.
Error = ON. No Error = OFF.
OUT
= Calculated Output (ON or OFF)
A maximum of 50 tokens per equation is allowed. A token is an operator, a variable, or a pair of
parentheses.