Modbus Read, Write and Override Parameters plus Exception Codes 
4/07  UDC2500 Universal Digital Controller Product Manual  217 
10.7.12 Display 
Table 10-20 lists all the register addresses and ranges or selections for the function 
parameters in Set-up Group Display.  
Table 10-20  Set-up Group – Display 
Parameter 
Description 
Register 
Address 
Data 
Type 
Access  Data Range or 
Enumerated Selection 
  Hex  Decimal       
Decimal Point 
Location 
 
009B 155  INT R/W 
0 = XXXX – Fixed 
1 = XXX.X – Floating 
decimal point to one 
2 = XX.XX – Floating 
decimal point to two 
Temperature 
Units 
0081 129  INT R/W 
0 = °F 
1 = °C 
2 = None 
Power 
Frequency 
00A6  166  INT  R/W  0 = 60 Hertz 
1 = 50 Hertz 
Language 
(Displays) 
00C0  192  INT  R/W  0 = English 
1 = French 
2 = German 
3 = Spanish 
4 = Italian 
5 = Numeric 
Lower Display 
Enable 
00AE  174  INT  R/W  0 = Enable 
1 = Disable 
Lower Display  00AF  175  INT  R/W  0 = Setpoint 
1 = PRY – PV with Label 
2 = PRN – PV witout Label 
TC Diagnostics  009f  159  INT  R/W  0 = Enable 
1 = Disable