Provided by standard ibrary.

INSERT inserts a string into another string at a defined point.

The input variables STR1 and STR2 are type STRING, POS is type INT and the return value of the function is type STRING.

INSERT(STR1, STR2, POS) means: insert STR2 into STR1 after position POS.

Example in Function Block Diagram

Example in Structured Text

VarSTRING1 := INSERT ('SUSI','XY',2);