Function Blocks 
MBR Modbus Read Function Block 
194    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. 
 
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Configuration parameters 
You must configure the MBR function Block Output Pins as shown in the “Edit Selected Output Pin” 
portion of the dialog box.  Follow the numbered sequence shown above referring to 
HTable 59. 
Table 59  MBR function block configuration parameters 
 
Sequence  
Number 
Parameter 
Field 
Action Selections Comments 
1 
 
 
 
Click on an Output Pin 
from the list of pins in 
the upper portion of the 
dialog box. 
 
RD1 through 
RD16 
The selected Output 
Pin will appear in the 
Output Pin Field. 
2 
 
 
 
Click on the “Use 
Register” field to assign 
a register to the Output 
pin. 
 
RD1 through 
RD16 
YES will be indicated in 
the “Register used” 
column when you 
select “Apply 
3 
 
 
 
Type in the address of 
the register (in Hex) on 
the slave device