In order for the Boolean block to calculate its output correctly, you must enter an equation. In general, the equation syntax is:
input operator input
where input is one of the block's inputs and operator is a Boolean operator. You specify inputs in the equation by their letter. For example, if you enter DI1 into the Boolean block's A Input field, you would refer to it in the equation as A.
You can specify any operator listed in the following table:
|
Enter... |
To represent the operator... |
Description |
|
- |
NOT |
Inverts the incoming value. If A is true, -A is false. |
| * |
AND |
Evaluates to true if all inputs are true. If any input is false, the output is false. |
|
! |
NAND |
Evaluates to true if A and B are not both true. Otherwise the output is false. |
|
+ |
OR |
Evaluates to true as long as one or more of the inputs are true. If all inputs are false, the output is false. |
|
^ |
XOR |
Evaluates to true if one input is true and the other false. If both inputs are true or false, the output is false. |
|
= |
Equal |
Evaluates to true if A equals B. Otherwise, the output is false. |
|
~ |
Not Equal |
Evaluates to true if A does not equal B. Otherwise, the output is false. |
