CB FALCON MODBUS COMMUNICATION
12
Table 4. CB Falcon Modbus register map
00A3 0163
Lead Lag master heat
demand
R U16 0=Off,
1=On
00A4 0164
Lead Lag slave burner
demand
R U16 0=Off,
1=On
00A5 0165
Lead Lag slave requested
rate
R U16
RPM or %
c
EXTENDED PUMP
STATUS
00A8 0168 Pump C status R U16
Bit map:
Demand:
15-14=Reserved,
13=Auxiliary 2 pump demand,
12=Auxiliary 1 pump demand,
11=System pump demand,
10=Boiler pump demand,
9=DHW pump demand,
8=CH pump demand
Reason:
7=Reserved,
6=Pump assigned to logical pump,
5=Pump exercise requested,
4=On due to exercise,
3=On due to overrun,
2=Forced off,
1=Forced on,
0=On due to normal demand
00A9 0169 RESERVED
EXTENDED SENSOR
STATUS
00AA 0170 Outdoor temperature R U16
-40°-130° (0.1°C precision)
b
00AB 0171 Outdoor sensor state R U16
0=None, 1= Normal, 2=Open, 3=Shorted, 4=Outside
high range, 5=Outside low range, 6=Not reliable
00AC 0172 Outlet T-rise rate R U16 Outlet temperature change rate (degrees/second, 0.1°C
precision)
00AD 0173 Exchanger T-rise rate R U16 Heat exchanger temperature change rate (degrees/
second, 0.1°C precision)
00AE 0174 S10 sensor reading R U16
-40°-130° (0.1°C precision)
a
00AF 0175 S10 sensor state R U16
0=None, 1= Normal, 2=Open, 3=Shorted, 4=Outside
high range, 5=Outside low range, 6=Not reliable
SYSTEM
CONFIGURATION
00B0 0176 Product type R U16 Product family (MSB):
0=Unknown product,
1=Hydronic boiler control,
2=Steam boiler control,
3=Reserved,
4=Fulton pulse hydronic boiler control,
5=Fulton pulse steam boiler control,
6=Cleaver Brooks hydronic boiler control,
7=Cleaver Brooks steam boiler control
Product ID
(LSB):
0=Residential control,
1=Commercial control
00B1 0177 Password W
Variable length password string (up to 20 characters)
requesting Falcon permission to write registers.
00B2 0178 Temperature units R/W U16 Display format for temperature at user interface:
0=°F (Fahrenheit),
1=°C (Celsius)
00B3 0179 Antishort cycle time R/W U16 0-64800 seconds (18 hours), 0xFFFF=Not configured
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