Operator ‘NE’¶

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: