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MELSEC-Q
11 INSTRUCTIONS AND FUNCTIONS
MID$ (Part 1)
Function
MIDdle $
• Replaces a section of a character string with another character string.
MID$( <character string expression 1> , <integer expression 1> [, <integer expression 2> ] )
= <character string expression 2>
character string expression 1
• • • •
Specify the character string or character string
variable to be replaced.
character string expression 2
• • • •
Specify the character string or character string
variable that will do the replacing.
integer expression 1
• • • •
Specify the starting position of the character string to
be replaced.
Syntax
integer expression 2
• • • •
Specify the number of characters that will do the
replacing.
MID$(A$,2)=”AB”
• • • •
Characters in A$ starting with the second character
are replaced with “AB.”
Examples
C
D
E
F
C
A
B
F
C
D
E
F
A$= "CDEF"
A
B
Description
• The MID$ (Part 1) function replaces a section of a character string with another character
string.
• If <integer expression 2> is omitted, the entire string will be replaced. The character string
cannot exceed the size of <character string expression 1> even if <integer expression 2>
is not specified.
• The value of <integer expression 1> cannot exceed the number of characters of <character
string expression 1>. Also, a value that is 0 or less cannot be specified.
• An empty character string cannot be specified for <character string 1>.
