Logical Operation Instructions - Mitsubishi MELSEC Q Series Programming Manual

7.1

Logical operation instructions

(1) The logical operation instructions perform logical sum, logical product or other logical
operations in 1-bit units.
Category
Logical product
(AND)
Logical sum
(OR)
Exclusive OR
(XOR)
NON exclusive
logical sum
(XNR)
7-2
Processing Details
Becomes 1 only when both input A and
input B are 1; otherwise, is 0
Becomes 0 only when both input A and
input B are 0; otherwise, is 1
Becomes 0 if input A and input B are
equal; otherwise, is 1
Becomes 1 if input A and input B are
equal; otherwise, is 0
Example
Formula for
Operation
A
0
0
Y A · B
1
1
0
0
Y A + B
1
1
0
0
Y A · B + A · B
1
1
0
0
Y (A + B)(A + B)
1
1
B Y
0 0
1 0
0 0
1 1
0 0
1 1
0 1
1 1
0 0
1 1
0 1
1 0
0 1
1 0
0 0
1 1