Watts AERCO EXT Installation, Operation & Maintenance Manual page 62

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
0 Error Code
10 Run Hours
11 Run Counts
Cascade Control
1000
Flow Sensor
1002
Temperature
Return Flow
1003
Temperature
External Sensor
1005
Temperature
0-10V control input
1006
Global Actual
1008
Modulation Level
Number of inserted
1110
Number of ignited
1111
Actual Target
1016
1018 Target Setpoint
OMM-0159_A • 6/28/2022
Units and Range
LSB:
MSB: Identification code
enum (0, 1, 2, 4)
0:
1: Slave identification
Status
2: Normal operation
4:
14°F to 248°F
(-10°C to 120°C)
32°F to 248°F (0°C to 120°C)
-31°F/-22°F to 122°F
(-35°C/-30°C to 50°C)
voltage
burners
burners
32°F to 212°F (0°C to 100°C)
Should increase up to
Setpoint
"Target Setpoint" temp as
boiler heats up
32°F to 212°F (0°C to 100°C)
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
0 – 0xFFFF
Error Code
of fault device:
0: BMM #0 to
7: BMM #7
255: BCM
0-50000
0-50000
Stop
procedure
Monitor mode
(Value x 10)
(Value x 10)
(Value x 10)
0-10V
(Value x 10)
0 – 100%
0-8
0-8
(Value x 10)
(Value x 10)
Default/(Comments)
(Read Only)
----
----
(Read Only)
(Read Only)
(Read Only)
(Read Only)
-31°F (-35°C) if not
connected
(Read Only)
(Read Only)
(Read Only)
(Read Only)
(Read Only)
(Read Only)
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