Modbus Read, Write and Override Parameters plus Exception Codes 
432  UDC3500 Universal Digital Controller Product Manual  3/07 
10.7.24 Display 
Table 10-33 lists all the register addresses and ranges or selections for the function 
parameters in Set-up Group Display.  
Table 10-33  Set-up Group – Display 
Parameter 
 
Register 
Address 
Data 
Type 
Access  Data Range or 
Enumerated Selection 
Description  ID  Hex  Decimal      
Decimal Point 
Location 
155 009B 155  INT  R/W 
0 = None – Fixed 
1 = One – Floating 
decimal point to one 
2 = Two – Floating 
decimal point to two 
3 = Three – Floating 
decimal point to three 
Decimal Point 
Location Loop2 
155 019B 411  INT  R/W 
0 = None – Fixed 
1 = One – Floating 
decimal point to one 
2 = Two – Floating 
decimal point to two 
3 = Three – Floating 
decimal point to three 
Temperature 
Units 
129 0081 129  INT  R/W 
0 = °F 
1 = °C 
2 = None 
Power Frequency  166  00A6  166  INT  R/W  0 = 60 Hertz 
1 = 50 Hertz 
Ratio Input 2 
from Front Panel 
208  00D0  208  INT  R/W  0 = Disable 
1 = Enable 
Language 
(Displays) 
192  00C0  192  INT  R/W  0 = English 
1 = French 
2 = German 
3 = Spanish 
4 = Italian 
TC Diagnostics  159  009F  159  INT  R/W  0 = Enable 
1 = Disable 
Unit ID Number*  41  0029  41  INT  R/W  0 to 255 
* The Unit ID Number parameter can be used to uniquely identify a particular 
instrument.