Rockwell Automation Publication 1756-RM003N-EN-P - October 2011 323
Move/Logical Instructions (MOV, MVM, BTD, MVMT, BTDT, CLR, SWPB, AND, OR, XOR, NOT, BAND, BOR, BXOR, BNOT) Chapter 7
Bitwise Exclusive OR (XOR)
The XOR instruction performs a bitwise XOR operation by using the bits in Source A
and Source B and places the result in the Destination.
To p er f o r m a l o g i c a l XO R , s e e page 337
.
Operands:
Relay Ladder
Structured Text
Use XOR as an operator within an expression. This expression evaluates sourceA XOR
sourceB.
See Structured Text Programming
for information on the syntax of expressions within
structured text.
Function Block
Operand Type Format Description
Source A SINT
INT
DINT
Immediate
Tag
Value to XOR with Source B
A SINT or INT tag converts to a DINT value by zero-fill.
Source B SINT
INT
DINT
Immediate
Tag
Value to XOR with Source A
A SINT or INT tag converts to a DINT value by zero-fill.
Destination SINT
INT
DINT
Tag Stores the result
Operand Type Format Description
XOR tag FBD_LOGICAL Structure XOR structure
dest := sourceA XOR sourceB
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