Function Blocks 
MATH Function Block 
Revision 11    HC900 Hybrid Control Designer Function Block Reference Guide  191 
2/07     
•  Function operators: EXP, LOG10, Ln must have an operand to the right, and the operand 
must be enclosed in parentheses. 
 
Examples:   EXP(A), LOG10(b), LN(c), 
 A*(sqrt(B+C))+D, 
 (A+B*C)/D 
. 
 
Block properties 
 
 
 
Double click on the function block to access the function block properties dialog box. 
Configuration parameters 
Table 58  Math function block configuration parameters 
 
Properties Group  Parameter  Index #  Parameter Description  Value or Selection 
Equations 
Equation 
Field 
N/A OUT= [equation] 
Enter the desired equation 
in this field 
Functions 
Math 
Functions 
N/A  abs, exp, In, log, neg, sqrt 
Double Click on a function 
to select from the list box 
Operators 
Math 
Operations 
N/A 
+ (add) 
- (subtract) 
* (multiply) 
/ (divide) 
^ (power) 
Double Click on an 
operation from the list box 
Errors  Error list 
N/A  List of equation errors