Modbus Read, Write and Override Parameters plus Exception Codes 
3/07  UDC3500 Universal Digital Controller Product Manual  425 
Parameter 
 
Register 
Address 
Data 
Type 
Access  Data Range or 
Enumerated Selection 
Description  ID  Hex  Decimal       
Alarm 3 
Setpoint 2 Type 
142  408E  16526  INT  R/W  Same as 140 
Alarm 4 
Setpoint 1 Type 
144  4090  16528  INT  R/W  Same as 140 
Alarm 4 
Setpoint 2 Type 
146  4092  16530  INT  R/W  Same as 140 
Alarm 1 
Setpoint 1 
Event 
141  008D  141  INT  R/W  0 = Low Alarm 
1 = High Alarm 
Alarm 1 
Setpoint 2 
Event 
143  008F  143  INT  R/W  0 = Low Alarm 
1 = High Alarm 
Alarm 2 
Setpoint 1 
Event 
145  0091  145  INT  R/W  0 = Low Alarm 
1 = High Alarm 
Alarm 2 
Setpoint 2 
Event 
147  0093  147  INT  R/W  0 = Low Alarm 
1 = High Alarm 
Alarm 3 
Setpoint 1 
Event 
141  409D  16525  INT  R/W  0 = Low Alarm 
1 = High Alarm 
Alarm 3 
Setpoint 2 
Event 
144  4090  16527  INT  R/W  0 = Low Alarm 
1 = High Alarm 
Alarm 4 
Setpoint 1 
Event 
145  4091  16529  INT  R/W  0 = Low Alarm 
1 = High Alarm 
Alarm 4 
Setpoint 2 
Event 
147  4093  16531  INT  R/W  0 = Low Alarm 
1 = High Alarm 
Alarm 1 
Hysteresis 
11  400B  16395  FP  R/W  0.0 to 100% of output or span 
Alarm 2 
Hysteresis 
12  400C  16396  FP  R/W  0.0 to 100% of output or span 
Alarm 3 
Hysteresis 
13  400D  16397  FP  R/W  0.0 to 100% of output or span 
Alarm 4 
Hysteresis 
14  400E  16398  FP  R/W  0.0 to 100% of output or span 
Alarm 1 
Latching 
200  00C8  200  INT  R/W  0 = Non Latching 
1 = Latching