Watts AERCO EXT Installation, Operation & Maintenance Manual page 65

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
Burner OFF
3000
Hysteresis
Minimum Inserted
3001
Temp. Control: Slope
3002
Temp. Control:
3003
Proportional Band
Temp. Control:
3004
Integral Gain
Temp. Control:
3005
Derivative Gain
3006 Pump Over-run Time
Burner insertion
3018
delay time
Burner insertion
3019
delay time
Pump relay function
3020
Alarm relay function
3021
3022 Digital input function
3023 Manual request
CH maximum
3016
modulation level
OMM-0159_A • 6/28/2022
Units and Range
9°F to 36°F (5°C to 20°C)
(Value x 10)
Burner
2°F to 54°F/minute (1°C to
Limit 30°C/minute)
0°F to 90°F (0°C to 50°C)
1 – 10 minutes
(in 10 sec. intervals)
(in 10 sec. intervals)
0 = Main pump control
code
1 = Boiler status
0 = Active only if the failure
prevents the insertion of the
requested number of
code
1 = Activated by each failure
of the boiler.
0: CH service enable
1: Heat generator enable 2:
DO NOT USE
3: Manual request
0 = Manual request not
1 = Manual request active
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
1 - 8
0 - 50
0 - 50
30-900 sec.
30-900 sec.
0/1:
0/1:
burners.
0/1/2/3:
0/1:
active
0-100%
Default/(Comments)
(Read/Write)
9°F
(Read/Write) 1
(Read/Write) 9°F
(Read/Write) 45°F
(Read/Write) 12
(Read/Write) 0
(Read/Write) 3 min.
(Read/Write)
120 sec.
(Read/Write)
120 sec.
(Read/Write)
0
(Read/Write)
1
(Read/Write)
0
(Read/Write)
0
(Read/Write)
100%
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