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INSTR(P)
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7.11 Character string processing instructions
7.11.17 Character string search (INSTR(P))
7.11.17 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 –– ––
Process
High
performance
Redundant
Universal
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
S
1
S2
D