MITSUBISHI ELECTRIC 700 Series - Manual (Page 160)

155
Application instructions
3
SEQUENCE PRO
G
RAM
M
ING
3.27 Application instructions
Application instructions are used when special processing is required.
3.27.1 Logical Operation Instructions
(1) The logical operation instructions are instructions which perform the logical
operations such as logical add and logical product.
(2) The logical operation instructions are available in the following 10 types.
Classification
Instruction
Symbol
Classification
Instruction
Symbol
Classification
Instruction
Symbol
Logical
product
WAND
Exclusive OR
WXOR 2’s
complement
(Sign reversal)
NEG
WANDP WXORP NEGP
Logical add
WOR Exclusive
NOR
WXNR
WORP WXNRP
REMARKS
The logical operation instructions perform the following processings in units of one bit.
Classification Processing
Operation
Expression
Example
A B Y
Logical product
Set to 1 only when both inputs A
and B are 1. Set to 0 otherwise.
Y=A•B
0 0 0
0 1 0
1 0 0
1 1 1
Logical add
Set to 0 only when both inputs A
and B are 0. Set to 1 to 1
otherwise.
Y=A+B
0 0 0
0 1 1
1 0 1
1 1 1
Exclusive OR
Set to 0 when inputs A and B are
equal. Set to 1 when they are
different.
Y=A•B+A•B
0 0 0
0 1 1
1 0 1
1 1 0
Exclusive NOR
Set to 1 when inputs A and B are
equal. Set to 0 when they are
different.
Y= (A+B) (A+B)
0 0 1
0 1 0
1 0 0
1 1 1