The Subtract (SUB) function block subtracts one input value from another input value and generates an output value. The block supports signal status propagation. There are no modes or alarm detection in the Subtract function block.
IN_1 is the first input value and status.
IN_2 is the second input value and status that is subtracted from the first input value.
OUT is the output value and status.
The following figure shows the internal components of the Subtract function block:
