Modbus Read, Write and Override Parameters plus Exception Codes 
422  UDC3500 Universal Digital Controller Product Manual  3/07 
Parameter 
 
Register 
Address 
Data 
Type 
Access  Data Range or 
Enumerated Selection 
Description  ID  Hex  Decimal       
Floating Point Byte 
Order 
233 
 
00E9  233  INT  R/W  0 = Big Endian 
1 = Big Endian Byte Swap 
2 = Little Endian 
3 = Little Endian Byte Swap 
Shed Enable  234  00EA  234  INT  R/W  0 = Enable 
1 = Disable 
Shed Time  79  004F  79  INT  R/W  0 = No Shed 
1 = 255 sample periods 
Comm Data Units  161 
 
00A1  161  INT  R/W  0 = Percent 
1 = Engineering Units