Function Blocks 
4MUL Multiplier (4 input) Function Block 
Revision 11    HC900 Hybrid Control Designer Function Block Reference Guide  221 
2/07     
4MUL Multiplier (4 input) Function Block 
Description 
The 4MUL label stands for Multiplication Mathematical Operation (4Inputs).  
 
 
 
This block is part of the 
Math category.  
Function 
Multiplies four inputs to get an output. 
Input 
X1
 = First analog value 
X2 = Second analog value 
X3 = Third Analog value 
Y = Fourth Analog value 
 
 
ATTENTION 
All four inputs must be connected. Unconnected inputs default to zero. If only three inputs are 
needed, the fourth should be connected to a constant value of 1. 
 
Output 
OUT
 = Calculated analog value 
Block properties 
Double click on the function block to access the function block properties dialog box.