Mitsubishi Electric M800VW Series Programming Manual page 193

M800V/M80V Series PLC Programming Manual (1/2)
8 Function Instructions
8.1 Comparison Operation Instructions
 Operation errors
 In the following cases, an arithmetic error occurs, the error flag (SM0) turns ON, and an error code is stored at SD0.
- The NULL code "00H" does not exist in the relevant device range starting from the device number designated in S1 or
S2.
(Error code: 82)
- The character string of S1 or S2 is longer than 255 characters. (Error code: 82)
 Program example
 The following program compares the character string stored in the area starting from D0 and the character string stored in
the area starting from D10.
[Ladder mode]
0 $= D0 D10
4
 The following program compares the character string "ABCDEF" and the character string stored in the area starting from
D10.
[Ladder mode]
M3
0
$<> "ABCDEF" D10
8
 The following program compares the character string stored in the area starting from D10 and the character string stored in
the area starting from D100.
[Ladder mode]
M3
0 $> D10 D100
M8
7
 The following program compares the character string stored in the area starting from D200 and the character string
"12345".
[Ladder mode]
M3 M8
0
$<= D200 "12345"
9
IB-1501667-B
Steps
Y33 0
3
4
END
Steps
Y33
0
1
7
END
8
Steps
Y33
0
1
4
5
END
6
7
Steps
Y33 0
1
2
8
9
END
172
[List mode]
Inst. Device
LD$= D0
D10
OUT Y33
END
[List mode]
Inst. Device
LD M3
AND$<> "ABCDEF"
D10
OUT Y33
END
[List mode]
Inst. Device
LD M3
LD$> D10
D100
OR M8
ANB
OUT Y33
END
[List mode]
Inst. Device
LD M3
AND M8
OR$<= D200
"12345"
OUT Y33
END