MID

Provided by standard.lib.

Mid returns a partial string from within a string.

Input STR is type STRING, LEN and POS are type INT, the return value of the function is type STRING.

MID (STR, LEN, POS) means: Retrieve LEN characters from the STR string beginning with the character at position POS.

Example in IL

LD ‘SUSI’

MID 2,2

ST VarSTRING1 (* Result is ‘US’ *)

Example in FBD

Example in ST

VarSTRING1 := MID (‘SUSI’,2,2);

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.