Honeywell UDC3500 - 11 Further information; 11.1 Modbus RTU Serial Communications; 11.2 Modbus Messaging on Ethernet TCP;IP; 11.3 How to Apply Digital Instrumentation in Severe Electrical Noise Environments

Modbus Read, Write and Override Parameters plus Exception Codes
420 UDC3500 Universal Digital Controller Product Manual 3/07
Parameter Register
Address
Data
Type
Access Data Range or
Enumerated Selection
Description ID Hex Decimal
Digital Input #1
Combinations
188 00BC 188 INT R/W 0 = Disable
1 = +PID2
2 = +Direct
3 = +LSP2
4 = +Disable Accutune
5 = +LSP1
6 = +Run
7 = +ToSP3
Digital Input #2 187 00BB 187 INT R/W Same as Digital Input #1
Digital Input #2
Combinations
189 00BC 189 INT R/W 0 = Disable
1 = +PID2
2 = +Direct
3 = +LSP2
4 = +Disable Accutune
5 = +LSP1
6 = +Run
7 = +ToSP3
Digital Input #3 174 00AE 174 INT R/W Same as Digital Input #1
Digital Input #4 175 00AF 175 INT R/W Same as Digital Input #1
DI Loop
Assignment, DI on
Loop 2
136 0088 136 INT R/W 0 = None
1 = DI 2
2 = DI 2,3
3 = DI 2,3,4
Digital Inputs Loop
2 Assign
189 01BD 445 INT R/W 0 = None
1 = DI 2
2 = DI 2,3
3 = DI 2,3,4