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7-240
INSTR(P)
Operation Error
(1) In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and
an error code is stored into SD0.
• The value of n exceeds the number of characters for . (Error code: 4100)
•00
H
(NULL) does not exist within the corresponding device range after the device
designated by , . (Error code: 4100)
• The value of n is negative number or “0”. (Error code: 4100)
Program Example
(1) The following program searches from the 5th character from the left of the character string
data stored in devices starting from R0 for the character string data in devices starting from
D0, and stores the results at D100 when X0 goes ON.
[Ladder Mode] [List Mode]
[Operation]
(2) The following program searches from the 3rd character from the left of the character string
data being stored in devices starting from D0 for the character string data "AB", and stores
the results of the search at D100 when X1C goes ON.
[Ladder Mode] [List Mode]
[Operation]
S2
S1
S2
Instruction
Device
Step
R1
43
H
(C)49
H
(I)
32
H
(2)33
H
(3)
31
H
(1)32
H
(2)
43
H
(C)49
H
(I)
4D
H
(M)
00
H
R2
R3
R4
"CI2312CIM"
D1
43
H
(C)49
H
(I)
32
H
(2)33
H
(3)
D2 00
H
"CI23"
Searches from
the 5th character
0
Stores "0" because there are no matches.
Not searched since
the search start
position is 5
D0
D100
R0
b15 b8b7
b0 b15 b8b7 b0
Instruction DeviceStep
Searches from the
3rd character
"AB"
D1
31
H
(1)32
H
(2)
33
H
(3)34
H
(4)
41
H
(A)42
H
(B)
35
H
(5)36
H
(6)
41
H
(A)42
H
(B)
00
H
D2
D3
D4
D5
5th character from
the first character
5
D100
D0
b15 b8b7
b0