Modbus Read, Write and Override Parameters plus Exception Codes 
Parameter  Register  Data  Access  Data Range or 
Description  Address  Type  Enumerated Selection 
  Hex  Decimal       
Alarm 1 Setpoint 2 
Type 
008E  142  INT  R/W  Same as 140 
Alarm 2 Setpoint 1 
Type 
0090  144  INT  R/W  Same as 140 
Alarm 2 Setpoint 2 
Type 
0092  146  INT  R/W  Same as 140 
Alarm 1 Setpoint 1 
Event 
008D  141  INT  R/W  0 = Low Alarm 
1 = High Alarm 
Alarm 1 Setpoint 2 
Event 
008F  143  INT  R/W  0 = Low Alarm 
1 = High Alarm 
Alarm 2 Setpoint 1 
Event 
0091  145  INT  R/W  0 = Low Alarm 
1 = High Alarm 
0093  147  INT  R/W  0 = Low Alarm 
1 = High Alarm 
Alarm Hysteresis  0029  041  FP  R/W  0.0 to 100% of output or 
span 
Alarm Latching for 
Output 1 
00C8  200  INT  R/W  0 = Non Latching 
1 = Latching 
Alarm States  00C9  201  INT  R/W  State = 0 = Not in Alarm 
State = 1 = In Alarm 
   Bit 0 = Alarm 11 State 
   Bit 1 = Alarm 12 State 
   Bit 2 = Alarm 21 State 
   Bit 3 = Alarm 22 State 
Event = 0 = Low 
Event = 1 = High 
   Bit 4 = Alarm 11 Event 
   Bit 5 = Alarm 12 Event 
   Bit 6 = Alarm 21 Event 
   Bit 7 = Alarm 22 Event 
Alarm 1 Blocking  00CA  202  INT  R/W  0 = Disable 
1 = Block 1 
2 = Block 2 
3 = Block 1 2 
Alarm 2 Setpoint 2 
Event 
12/04  UDC3200 Universal Digital Controller Product Manual  217