Omron SYSMAC FH Series User Manual

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Macro Reference
621
8
Appendices
Vision System FH/FZ5 Series
User’s Manual (Z340)
Mid$
Extract a part from the character string.
Format
Mid$(<string>, <start>, <length>)
Parameter
Return value
Returns the character string type value of the extracted character string.
Description
Extracts the specified length of the character string in the <length> parameter after the positon specified in
the <start> parameter from the <string> parameter.
Specify the length of characters to be extracted in bytes for the <length> parameter. Each single-byte
character (i.e., half-width alphanumeric character and symbol) consumes one byte, whereas each double-
byte character consumes two bytes.
If the length specified in the <length> parameter is longer than the length of the character string between the
<start> parameter position and the end of the character string, the all characters from the <start> parameter
position to the end of the character string are extracted.
If a larger value than the length of the target character string is specified in the <start> parameter, an "Illegal
function call" error will occur.
If 0 or smaller value is specified in the <start> parameter or <length> parameter, an "Illegal function call" error
will occur.
If an incorrect data type is specified for a parameter, a "Type mismatch" error will occur.
If a value outside the range -2147483648 to 2147483647 is specified as an integer parameter, an "Overflow"
error will occur.
If a character string longer than 255 characters is specified for a character string parameter, the 255-
character string before the 256th character is used for the macro function processing. Characters after the
256th character will be discarded.
If a value is assigned to the return value variable or the variable is not used in an expression, a "Syntax error"
error will occur.
If the format is written incorrectly, such as writing the macro function name incorrectly, omitting a comma, or
omitting a half-width space, a "Syntax error" error will occur.
Usage Cautions
• None.
Parameter
name
Data type Description
<string>
Character
string type
Extraction target character string
<start> Integer type Starting position of extraction (1 to the length of the target character string)
<length> Integer type
Length of characters to be extracted (1 to the remaining length from specified starting
position)

Omron SYSMAC FH Series Specifications

General

Brand	Omron
Model	SYSMAC FH Series
Category	Industrial Equipment
Language	English