Boolean Exclusive Or (Bxor); Structured Text; Function Block; Fbd_Boolean_Xor Structure - Allen-Bradley Logix5000 Reference Manual

Move/Logical Instructions (MOV, MVM, BTD, MVMT, BTDT, CLR, SWPB, AND, OR, XOR, NOT, BAND, BOR, BXOR, BNOT)
Boolean Exclusive OR
(BXOR)
IF operandA XOR operandB THEN
<statement>;
END_IF;
Input Parameter Data Type
EnableIn BOOL
In1 BOOL
In2 BOOL
Output Parameter Data Type
EnableOut BOOL
Out BOOL
The BXOR performs an exclusive OR on two boolean inputs.
To perform a bitwise XOR, see
Operands:

Structured Text

Use XOR as an operator within an expression. The operands must be BOOL values or
expressions that evaluate to BOOL values. This expression evaluates whether only
operandA or only operandB is set (true).
See Appendix B

Function Block

Operand
BXOR tag

FBD_BOOLEAN_XOR Structure

Description
Enable input. If cleared, the instruction does not execute and outputs are not updated.
Default is set.
First boolean input.
Default is cleared.
Second boolean input.
Default is cleared.
Description
Enable output.
The output of the instruction.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
page 323.
for information on the syntax of expressions within structured text.
Type
FBD_BOOLEAN_XOR
Format Description
Structure BXOR structure
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