Mitsubishi MELSEC Q Series, Programming Manual

Page: 561 / 816

7.11 String Processing Instructions
7.11.17 Character string data search
7-221
7
APPLI
C
A
T
IO
N
INSTRUCTIONS
INS
T
R
INSTR
Function
(1) Searches for the character string data specified for in the devices from the nth character
from the left of the character string data specified for and stores the result to the device
specified for .
As the result of search, the location of match, counted in the number of characters from the
first character of the character string data specified for
, is stored.
When n 3
(2) If there is no matching character string data, stores 0 to .
(3) No processing will be performed if n is a negative value or 0.
O peration Error
In any of the following cases, an operation error occurs, the error flag (SM0) is turned ON, and
the corresponding error code is stored to SD0.
• The value of n exceeds the number of characters in . (Error code: 4100)
• 00
H
(NULL) does not exist within the corresponding device range following the devices
specified for and . (Error code: 4100)
s 1
s 2
d
s 2
S earches from the
3 r d character
+1
41
H
(A) 42
H
( B )
43
H
(C) 44
H
( D )
45
H
(E) 46
H
(F)
47
H
(G) 48
H
(H)
49
H
(I) 4A
H
(J)
4 B
H
(K) 00
H
+2
+3
+4
+5
"A B C D EFGHIJK"
+1
45
H
(E) 46
H
(F)
47
H
(G) 48
H
(H)
+2 00
H
"EFGH"
5 th character from
the f i rst character
5
S tores the pos i t i on of the
foun d character , counte d
by the num b er of characters
from the 1 st character i n
the character str i ng d ata
spec i f i e d for .
b15 b8b7 b0
s 1
s 2
d
b15 b8b7 b0
s 2
s 2
s 2
s 2
s 2
s 1
s 1
s 2
d
s 2
s 1 s 2