AERCO Control System (ACS)
APPENDIX H:
ACS Modbus Address Assignments
11/22/2017
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
Page 133 of 139
OMM-0081_0F
Phone: 800-526-0288
GF-131
TABLE H2: ACS Standard Holding Register Address Mapping
Modbus Data
Address
Decimal (Hex)
Menu Item
Units and Range
Default/
Comments
109 (0x006D)
Net Boiler 18 Address
Address for Network Boiler 18 Default = 0
110 (0x006E)
Net Boiler 19 Address
Address for Network Boiler 19 Default = 0
111 (0x006F)
Net Boiler 20 Address
Address for Network Boiler 20 Default = 0
112 (0x0070)
Net Boiler 21 Address
Address for Network Boiler 21 Default = 0
113 (0x0071)
Net Boiler 22 Address
Address for Network Boiler 22 Default = 0
114 (0x0072)
Net Boiler 23 Address
Address for Network Boiler 23 Default = 0
115 (0x0073)
Net Boiler 24 Address
Address for Network Boiler 24 Default = 0
116 (0x0074)
Net Boiler 25 Address
Address for Network Boiler 25 Default = 0
117 (0x0075)
Net Boiler 26 Address
Address for Network Boiler 26 Default = 0
118 (0x0076)
Net Boiler 27 Address
Address for Network Boiler 27 Default = 0
119 (0x0077)
Net Boiler 28 Address
Address for Network Boiler 28 Default = 0
120 (0x0078)
Net Boiler 29 Address
Address for Network Boiler 29 Default = 0
121 (0x0079)
Net Boiler 30 Address
Address for Network Boiler 30 Default = 0
122 (0x007A)
Net Boiler 31 Address
Address for Network Boiler 31 Default = 0
**123 (0x007B) Net Boiler 32 Address
Address for Network Boiler 32 Default = 0
124 (0x007C)
Network Baud
0=2400, 1=4800, 2=9600,
3=14400, 4=19200
2 = 9600
125 (0x007D)
Network Timeout
5 to 240 sec
Default = 60 sec.
126 (0x007E)
Password Lo
0 to 255 (73)
Default = 0
127 (0x007F)
Password Hi
0 to 255 (79)
Default = 0
128 (0x0080)
Modbus Control Type
0 = Round-Robin
1 = Broadcast
Default = 0
(Round Robin)
129 (0x0081)
Modbus Pass-Thru
0 = Disabled
1 = Enabled
Default = 0 (Disabled)
130 (0x0082)
RESERVED
Only for BMS II
131 (0x0083)
Outside Temp Sensor Offset
-50 to +50°F
Default = 0
132 (0x0084)
Dyn Up
0 to 300%/Min
Default = 20
133 (0x0085)
Dyn Down
0 to 300%/Min
Default = 200
134 (0x0086)
Fault Alarm Boilers
0 = No Blr Faults
1 = All Blr Faults
Default = 0
135 (0x0087)
4 to 20 mA Current Offset
-1.00 mA to 1.00 mA
Default = 0
