Function Blocks 
WCON Write Constant Function Block 
430    HC900 Hybrid Control Designer Function Block Reference Guide  Revision 11 
  2/07 
WCON Write Constant Function Block 
Description 
The WCON label stands for Write Constant.  
 
 
 
This block is part of the 
Auxiliary category 
Function 
Writes the numerical value of selected configuration parameter to a given control block. Select the index 
number of the required parameter from the specific function block reference data and enter it in the 
appropriate field in the “Write Constant Properties” dialog box.
 
•  If EN is ON, change the selected parameter to the value of X. 
 
Input 
X
 = Value to be written (invalid for parameters of type other than BOOL or REAL) 
EN = Enable command 
Block properties 
 
 
 
Double click on the function block to access the function block properties dialog box.