394
7 APPLICATION INSTRUCTION
7.6 Character string operation instruction
Storing the specified number of character strings
MIDR(P)
These instructions extract the number of characters specified by (s2)+1 of the character string data stored in the device
specified by (s1) and later from the position specified by (s2), and store the extracted characters in the device specified by (d)
and later.
■Descriptions, ranges, and data types
■Applicable devices
*1 T, ST, C cannot be used.
• These instructions extract the number of characters specified by (s2)+1 of the character string data stored in the device
specified by (s1) and later from the position specified by (s2), and store the extracted characters in the device specified by
(d) and later.
• A character string stored in (s1) indicates data stored in devices from the specified device until "00H" is first detected in
units of byte.
• A NULL code (00H), which indicates an end of a character string, is automatically added at the end of the character string
data.
• When the number of extracted characters "(s2)+1" is odd, "00H" is stored in the upper byte of a device storing the last
character. When the number of extracted characters "(s2)+1" is even, "0000H" is stored in the device after the last
character.
• If the number of characters specified by (s2)+1 is 0, no processing is performed.
Ladder diagram Structured text
ENO:=MIDR(EN,s1,s2,d);
ENO:=MIDRP(EN,s1,s2,d);
Operand Description Range Data type Data type (label)
(s1) Character string or head device number storing a character string Character string Character string
(d) Head device number for storing the character string data of the
operation result
Character string Character string
(s2) Head device number for storing the number of characters and position
of the start character
(s2)+0: Position of the start character, (s2)+1: Number of characters
16-bit signed binary ANY16
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB
U\G T, ST,
C, LC
T, ST, C, D,
W, SD, SW, R
U\G Z LC LZ K, H E $
(s1)
*1
(d)
*1
(s2)
41H (A)42H (B)
43H (C)44H (D)
45H (E)46H (F)
47H (G)48H (H)
45H (E)46H (F)
47H (G)48H (H)
49H (I)4AH (J)
4BH (K)00H
49H (I)00H
"ABCDEFGHIJK"
"EFGHI"
b15 b0b7b8
b15 b0
b7b8
(s1)
(s1)+1
(s1)+2
(s1)+3
(s1)+4
(s1)+5
(d)
(d)+1
(d)+2
5
5
(s2)
(s2)+1
ASCII code for 5th character (s2)+1
5th character position
(s2)
To Next Page
Loading...
Need help?
General
