LEFT

Provided by standard.lib.

Left returns the left, initial string for a given string. Input STR is type STRING, SIZE is of type INT, the return value of the function is type STRING.

LEFT (STR, SIZE) means: Take the first SIZE character from the right in the string STR.

Example in IL

LD   ‘SUSI’

LEFT 3

ST   VarSTRING1 (* Result is ‘SUS’ *)

Example in FBD

Example in ST

VarSTRING1 := LEFT (‘SUSI’,3);

Note

String functions are not “thread safe”: When using tasks, string functions may only be used in a single task. If the same function is used in different tasks, there is a danger of overwriting.