Function Blocks 
8AND Function Block 
78    HC900 Hybrid Control Designer Function Block Reference Guide  Revision 11 
  2/07 
Block properties 
 
 
 
Double click on the function block to access the function block properties dialog box. 
Input state 
You can invert Input 1, 2, 3, 4, 5, 6, 7, 8 or all. If the input is inverted, an input line that is ON is seen as 
OFF (“N” on diagram next to inverted input). 
 
 
 
 
 
ATTENTION 
Unused values must be set to 1 or inverted. 
 
Example 
HFigure 17 shows a Function Block Diagram configuration using a 8AND function block. The function 
block is used in a startup sequence to enable heaters when 6 input conditions are true. 
 
 
 
Figure 17  8AND function block example