Omron CX-PROGRAMMER V8.1 - Page 215

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Function Descriptions Appendix C
•Example
REPLACE: Replace Characters
• Function
Replaces the specified number of characters starting from the specified position of the specified text
string.
• Application
Return_value := REPLACE(Source_string, Replace_string, Number_of_characters, Position);
• Arguments and Return Values
•Example
FIND: Find Characters
• Function
Finds the first occurrence of the specified text string in another text string and returns the position.
If the text string is not found, 0 is returned.
• Application
Return_value := FIND(Source_string, Find_string);
• Arguments and Return Values
Variable name Data type Description
Source_string STRING Specifies the text string in which to replace
characters.
Replace_string STRING Specifies the replace text string.
Number_of_characters INT, UINT Specifies the number of characters to be
replaced.
Position INT, UINT Specifies the position from which to
replace characters. The first character is
position “1” (e.g., position 1 is “A” in mes-
sage 1 in the following illustration).
Return_value STRING Returns the text string with the characters
replaced.
Variable name Data type Description
Source_string STRING Specifies the text string to search.
Find_string STRING Specifies the text string to find.
Return_value INT Returns the position of the first occurrence of
the find text string. The first character is position
“1” (e.g., position 1 is “A” in message 1 in the fol-
lowing illustration).
Message
Variables
STRING Message1
STRING Result
Result:=DEL(Message1,4,2);
→ "AFGH" is stored in the Result variable.
Result
A B C D E F G H
A F G H
Message 1
Variables
STRING Message1
STRING Message2
STRING Result
Result:=REPLACE(Message1,Message2,2,3);
→ "ABXYEFGH" is stored in the Result variable.
Result
A B C D E F G H
A B
X Y
E F G H
X Y Z
Message 2