Delta Electronics EXIO14RAE - Page 124

Appendix D Use of Application Instructions|DOP-EXIO Series
Revision March, 2008, Doc. Name: 2007PDD23000014 D-43
Mnemonic Operands Function
XOR D
S
1
S
2
D
Logical Exclusive OR
Bit Devices Word Devices
X Y M S K H KnX KnY KnM KnS T C D E F
S
1
          
S
2
          
D
       
y Note:
1. If S
1
, S
2
and D are used in device F, only 16-bit instruction is
applicable.
16-bit instruction (7 Steps)
WXOR
Continuous
execution
32-bit instruction (13 Steps)
DXOR
Continuous
execution
y Flags: None
Operands:
S
1
: Source data device 1
S
2
: Source data device 2
D
: Operation result
Explanations:
1. This instruction conducts logical XOR operation of S
1
and S
2
and stores the result in D.
2. Operation rule: If the bits in
S
1
and S
2
are the same, the corresponding bit of the operation result
in
D will be “0”; if the bits in S
1
and S
2
are different, the corresponding bit of the operation result in
D will be “1”.
Program Example 1:
When X0 = On, the 16-bit D0 and D2 will perform WXOR, logical XOR operation, and the result will be
stored in D4.
X0
WXOR D0 D2
D4
00 111111
000 0 0 011 1 1
00 00
11 0
WOR
b15
0000 0011
0111 0 1
11001111 0
Before
execution
After
execution
D0
D2
D4
b0
Program Example 2:
When X1 = On, the 32-bit (D11, D10) and (D21, D20) will perform DXOR, logical XOR operation, and
the result will be stored in (D41, D40).
X1
DXOR D10 D20
D40