AERCO BMS II BOILER - Manual (Page 94)

APPENDIX H
H-2
H -1 BMS II S TANDARD I NPUT R EGISTER A SSIGNMENMTS
The Read Only Input Register assignments for the BMS II are listed in Table H-1 which follows:
Table H-1. BMS II Standard Input Register Address Mapping
Modbus Data
Address (Hex) Menu Item Units and Range Default/Comments
0x0000 (Reserved)
0x0001 Header Temperature 40 to 220°F
0x0002 Outside Air Temperature -60 to 120°F
0x0003 Indoor Air/Return
Temperature 40 to 220°F
0x0004 Fire Rate Out 0 to 100%
(out to boilers)
0x0005 Header Set Temperature 40 to 220°F
0x0006 Network Address 128 to 247 Default = 128
0x0007 Total Boilers Fired 0 to 32 (for BMS II)
0x0008 Total Boilers On Line 0 to 32
0x0009 (Reserved)
0x000A Fault/Message Code
0 to 65535
Bit:
0 = Outside Air Sensor
1 = Header Sensor Error
2 = Interlock 1 Error
3 = Interlock 2 Error
4 = Indoor Air Sensor Error/
Return Sensor Error
5 = 4-20mA Input Error
0x000B
thru
0x000F
(Reserved)
0x0010 Lead Boiler Number 1 to 32