This IEC operator is used for the "does not equal" function.

Permitted data types of the operands: any basic data type, depending on target system and compiler version: structure data type.

If the operands are not equal, then then the operator yields the result ‎TRUE‎; otherwise ‎FALSE‎.

If the target system supports the data type, then as from compiler version >= 3.5.7.0 also operands of type STRIUCT (structure) can be compared. Example: ‎IF (stStruct1 := stStruct2) THEN...‎.

Examples

Result in ‎Var1‎ is ‎FALSE‎

ST:

Var1 := 40 <> 40;

FBD: