Honeywell HC900 Reference Manual page 390

Function Blocks
4SUB Function Block
4SUB Function Block
Description
The 4SUB label stands for the Subtraction mathematical operation (4 Inputs).
This block is part of the Math category.
Function
Subtracts three analog inputs (X1, X2, X3) from Y input to get an output.
Input
X1 = First analog input
X2 = Second analog input
X3 = Third analog input
Y = Fourth analog input (number to subtract from)
ATTENTION
All four inputs must be connected. Unconnected inputs default to zero.
Output
OUT = Calculated Value
Block properties
Double click on the function block to access the function block properties dialog box.
376 HC900 Hybrid Control Designer Function Block Reference Guide Revision 11
2/07