The Not Equal function block evaluates input A to see if its integer value is not equal to input B.
If input A is not equal to input B: power will flow through the function block.
If input A is equal to input B: power will not flow through the function block.
Input Operands A & B must be integer values: MI, SI or # constant integer value.
According to the above example:
If MI 1 is not equal to MI 3; then MB 65 will go to logic "1" (ON).
If MI 1 is equal to MI 3; then MB 65 will go to logic "0" (OFF).