Mitsubishi MELSEC Q Series Programming Manual page 395

(2) The following program compares the bit pattern of the 32-bit data from X20 to X3F with the
bit pattern of the data at D9 and D10 when X6 is ON, and stores the number of differing bits
at D16.
[Ladder Mode]
[Operation]
X3F X3C X3B X38 X37 X34 X33
X3F to X20 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
b31
D10,D9 1 0 1 1 1 0 0 1 1 1 0 0 0 0 0 1 1 0 1 1 1 1 0 1 1 0 1 0 1 1 0 1
b31
D10,D9 1 1 1 0 1 1 0 0 1 0 0 1 0 1 0 0 1 1 1 0 1 0 0 0 1 1 1 1 1 0 0 0
Remark
See Section 7.5.2 for more information on the DSUMP instruction.
[List Mode]
Step
S + 1
X30 X2F X2CX2B X28 X27 X24 X23
XOR
D + 1
b16 b15
D + 1
b16 b15
D16 17
WXOR(P),DXOR(P)
Instruction Device
S
X20
D
b0
D
b0
1
2
3
4
6
6
7
8
7-21