
Appendix B: CRC-16 Calculation
02/13 Modbus® RTU Serial Communications User Manual 51
A.13 Maintenance (HealthWatch) Value Register Map
This table applies to the UDC3300 Expanded and UDC3500 models only.
Address
(hex)
Register
(decimal)
Channel Number Acces
s
Notes
1B99 47064 Maintenance Reset Type W Unsigned 16-bit Integer
0: None 6: Counter 2
1: Timer 1 7: Counter 3
2: Timer 2 8: All Counters
3: Timer 3 9: All Timers & Counters
4: All Timers 10: Ambient Temp
5: Counter 1
1B9A 47065 Timer 1 Configuration
UDC3300 only
R/W Unsigned 16-bit Integer
0: Disable 6: Manual Loop 1
1: Last Reset 7: Guaranteed soak
2: Alarm 1 SP1 8: Sooting
3: Alarm 1 SP2 9: DI1 Closed
4: Alarm 2 SP1 10:DI2 Closed
5: Alarm 2 SP2 11: Manual Loop 2
1B9A 47065 Timer 1 Configuration
UDC3500 only
R/W Unsigned 16-bit Integer
0: Disable 9: Alarm 4 SP2
1: Last Reset 10: Manual Loop 1
2: Alarm 1 SP1 11: Guaranteed soak
3: Alarm 1 SP2 12: Sooting
4: Alarm 2 SP1 13: DI1 Closed
5: Alarm 2 SP2 14: DI2 Closed
6: Alarm 3 SP1 15: DI2 Closed
7: Alarm 3 SP2 16: DI2 Closed
8: Alarm 4 SP1 17: Manual Loop 2
1B9B 47066 Timer 2 Configuration R/W Same as Timer 1 Configuration
1B9C 47067 Timer 3 Configuration R/W Same as Timer 1 Configuration
1B9D 47068 Counter 1 Configuration
UDC3300 only
R/W Unsigned 16-bit Integer
0: Disable 6: DI1
1: Manual Loop 1 7: DI2
2: Alarm 1 SP1 8: Output1 Relay x 1K
3: Alarm 1 SP2 9: Output2 Relay x 1K
4: Alarm 2 SP1 10:Guaranteed soak
5: Alarm 2 SP2 11: Power cycle
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