AERCO BMS II BOILER - Manual (Page 99)

APPENDIX H
H-7
APPENDIX H
(cont.)
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Table H-2. BMS II Standard Holding Register Address Mapping
Modbus Data
Address (Hex) Menu Item Units and Range Default/Comments
0x0012 Derivative Gain -2.00 to 2.00
(0.00 increments)
Default = 0.15
(Value x 100)
0x0013 Header Temp
Bandwidth 5 to 120°F Default = 70°F
0x0014 Aux Relay Open 0 to 99% Default = 45%
0x0015 Aux Relay Mode 0 or 1
0 = 100% Fire Rate
1 = 100% Fire Rate and Off Default = 1
(100% Fire Rate & Off)
0x0016 Failsafe Mode 0 or 1
0 = Shutdown
1 = Constant Setpt Default = 0
(Shutdown)
0x0017 Fault Alarm Relay
Mode
0, 1, 2, 3
0 = All Faults,
1 = No Interlock
2 = Interlock 1
3 = Interlock 2 Default = 0
(All Faults)
0x0018 Fault Alarm Clear
Method
0 or 1
0 = Automatic
1 = Manual Default = 0
(Automatic)
0x0019 Boiler Operation
Mode
0, 1 or 2
0 = Parallel
1 = Sequential
2 = Combination Default = 1
(Sequential)
0x001A Not Applicable
0x001B (Reserved)
0x001C (Reserved)
0x001D (Reserved)
0x001E Max Power Input
50 to 100% Default = 100%
(Fire Rate)
0x001F Sys Intlk Config 0 or 1
0 = Always Enabled
1 = Start Enabled Default = 1
(Start Enabled)
0x0020 Real Time Clock
Minutes 00 to 59 Present Time