String

CONCAT

The CONCAT function concatenates two or more strings into one.

result := CONCAT('Hello, ', 'World!'); // Result: 'Hello, World!'

LEN

The LEN function returns the length of a string.

length := LEN('Hello'); // Result: 5

FIND

The FIND function searches for a substring within a string and returns the position of the first occurrence.

position := FIND('World', 'Hello, World!'); // Result: 8

INSERT

The INSERT function inserts a substring into a string at a specified position.

result := INSERT('Hello, !', 'World', 7); // Result: 'Hello, World!'

DELETE

The DELETE function deletes a specified number of characters from a string starting at a given position.

result := DELETE('Hello, World!', 7, 6); // Result: 'Hello, !'

REPLACE

The REPLACE function replaces a substring within a string with another substring.

result := REPLACE('Hello, World!', 'World', 'IEC61131-3'); // Result: 'Hello, IEC61131-3!'

LEFT

The LEFT function returns the leftmost characters of a string.

result := LEFT('Hello, World!', 5); // Result: 'Hello'

RIGHT

The RIGHT function returns the rightmost characters of a string.

result := RIGHT('Hello, World!', 6); // Result: 'World!'

MID

The MID function returns a substring from a string, starting at a specified position.

result := MID('Hello, World!', 8, 5); // Result: 'World'