Справочник Пользователя для Mitsubishi Electronics QCPU

7-239

INSTR(P)

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.11 Char

acter

 string processing inst

ructions

7

.11.17 Char

acter string search (IN

S

TR(
P

))

Character string search (INSTR(P))

INSTR(P)

Function

(1) Searches for the character string data designated by 

 in the area starting from the nth 

character from the left of the character string data designated by 

 and stores the result of 

search at the device designated by 

.

As the result of search, the location of match, counted in the number of characters from the 
first character of the character string data designated by 

, is stored.

When n   3

(2) If there is no matching character string data, stores "0" at 

.

: Character string to be searched or head number of the devices where the character string to be searched is 

stored (character string)

: Character string in which a search is performed or head number of the devices where the character string is 

stored (character string)

: Head number of the devices where the result of search will be stored (BIN 16 bits)

 n

: Location to start the search (BIN 16 bits)

Setting 

Data

Internal Devices 

R, ZR

J

\

U

\G

Zn

Constants

Other

Bit

Word

Bit

Word

K, H

$

––

––

––

––

––

––

––

––

––

––

––

n

––

––

Basic

Command

Command

INSTR

INSTRP

n

n

S1

S2

D

S1

S2

D

INSTR

INSTRP

S1

S2

D

S1

S2

D

S1

S2

D

S2

Searches from the 
3rd 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)

4B

H

 (K)

00

H

+2

+3

+4

+5

"ABCDEFGHIJK"

+1

45

H

 (E)

46

H

 (F)

47

H

 (G)

48

H

 (H)

+2

00

H

"EFGH"

5th character from 
the first character

5

Stores the position of the 
found character, counted 
by the number of characters 
from the 1st character in 
the character string data 
designated by      .

b15

b8b7

b0

S1

S2

D

b15

b8b7

b0

S2

S2

S2

S2

S2

S1

S1

S2

D