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AERCO Control System (ACS)
APPENDIX H:
ACS Modbus Address Assignments
Page 124 of 139
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
11/22/2017
GF-131
Phone: 800-526-0288
OMM-0081_0F
TABLE H-1: ACS Standard Input Register Address Mapping
Modbus Data
Address Decimal
(Hex)
Menu Item
Units and Range
Default/
Comments
54 (0x0036)
Boiler 30 Status
(Net Boiler 30)
Same As Above
55 (0x0037)
Boiler 31 Status
(Net Boiler 31)
119 = Not On-Line
120 = On-Line But Not Fired
1–40 = Fired & Sequence
121 = On-Line But Disabled
122 = On-Line But Faulted
56 (0x0038)
Boiler 32 Status
(Net Boiler 32)
Same As Above
57 (0x0039)
I/O Status
00 to 255
Bit map of Input/Output
Status:
LSD:
Bit 0 = AUX Relay
Bit 1 = Fault Relay
Bit 2 = Sys Start Relay
Bit 3 = Empty
MSD:
Bit 4 = Setback
Bt 5 = Interlock 2
Bit 6 = Interlock 1
Bit 7 = Empty
See Appendix A, Table A-
7.
58 (0x003A)
Return Sensor Temp
40°F to 220°F
When Ret Sensor Mode =
Normal
59 (0x003B)
Net Blr 1 Outlet Temp
40°F to 220°F
When Blr Cntl Type = 1 or
2
60 (0x003C)
Net Blr 2 Outlet Temp
40°F to 220°F
61 (0x003D)
Net Blr 3 Outlet Temp
40°F to 220°F
62 (0x003E)
Net Blr 4 Outlet Temp
40°F to 220°F
63 (0x003F)
Net Blr 5 Outlet Temp
40°F to 220°F
64 (0x0040)
Net Blr 6 Outlet Temp
40°F to 220°F
65 (0x0041)
Net Blr 7 Outlet Temp
40°F to 220°F
66 (0x0042)
Net Blr 8 Outlet Temp
40°F to 220°F