Watts AERCO EXT Installation, Operation & Maintenance Manual page 64

Ufly Controller and BCM for Modulex EXT
CHAPTER 7: BCM MODBUS AND ADDRESS ASSIGNMENTS
Table 7-4: BCM Standard Holding Register Address Mapping
Modbus Data
Menu Item
Address
1200 Monitor Only
BMM #n Error Code
2n00
(n = 0 – 7)
BMM #n Outlet
2n02 Temperature
(n = 0 – 7)
BMM #n Actual
2n08 Modulation Level (n
BMM #0 Capacity
2n10
(n = 0 – 7)
2n11 Configuration
(n = 0 – 7)
BMM #n Operating
2n20
Flags (n = 0 – 7)
Firmware Code &
1550
Firmware Revision
Boiler Global
1011
Boiler Mode =
12
AERCO BMS II/ACS
Remote Signal =
13
19 Modbus Address
OMM-0159_A • 6/28/2022
Units and Range
14°F to 212°F (-10°C to
100°C) (Value x 10)
= 0 – 7)
BMM #n
0: Space Heating Only
1: Space Heating and DHW
Bit 0: CH Pump direction
Bit 1: DHW Pump direction
Bit 2: CHECK mode
Bit 3: Flame detected
Bit 4: Heat request
Bit 5: Warning
Bit 6: Pump status
SYSTEM DATA
0x2100 – 0x21FF
High byte: Firmware Code
Low byte: Firmware Revision
Capacity
Network
SETTINGS
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0 – 100%
0 – 0xFFFF
0 – 100%
0 – 255 kW
Flag (0, 1)
Flags (0-255)
Bit 7: Alarm
0 – FFFF kW
2
3
1 - 127
Default/(Comments)
(Read Only) Global
modulation level from
Cascade Manager
(Read Only)
(Read Only)
(Read Only)
(Read Only)
(Read Only)
(Read Only)
(Read Only)
(Read Only)
(Read Only)
(Read Only)
(Read/Write)
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