Mitsubishi MELSEC Q Series, Programming Manual

Page: 562 / 816

7-222
7.11 String Processing Instructions
7.11.17 Character string data search
INSTR
Program Example
(1) In the following program, the character string data stored in Var_D0 and the following
devices are searched from the 5th character from the left of the character string data stored
in Var_R0 and the following devices when X0 turns ON, and the result is stored to
Var_D100.
[Structured ladder]
[ST]
INSTRP(X0,Var_D0,Var_R0,5,Var_D100);
[Operation]
(2) In the following program, the character string data "AB" is searched from the 3rd character
from the left of the character string data stored in Var_D0 and the following devices when
X1C turns ON, and the result is stored to Var_D100.
[Structured ladder]
[ST]
INSTRP(X0,"AB",Var_D0,3,Var_D100);
[Operation]
43
H
(C) 49
H
(I)
32
H
(2) 33
H
(3)
31
H
(1) 32
H
(2)
43
H
(C) 49
H
(I)
4 D
H
(M) 00
H
" CI2312CIM"
43
H
(C) 49
H
(I)
32
H
(2) 33
H
(3)
00
H
" CI23"
S earches from
the 5 th character
0
S tores "0" b ecause there
are no matches .
N ot searche d s i nce
the search start
pos i t i on i s 5
Var _ D 100
b15 b8b7 b0 b15 b8b7 b0
Var _ D 0 Var _R0
S earches from the
3 r d character "A B "
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
" 1234A B 56A B "
5 th character from
the f i rst character
5 Var _ D 100
b15 b8b7 b0
Var _ D 0