CB FALCON MODBUS COMMUNICATION
9
Table 4. CB Falcon Modbus register map
DOMESTIC HOT WATER
(DHW) STATUS
0050 0080 DHW status R U16 0=Unknown,
1=Disabled,
2=Normal,
3=Suspended
0051 0081 DHW setpoint source R U16 0=Unknown,
1=Normal setpoint,
2=TOD setpoint,
5=DHW tap setpoint,
6=DHW preheat setpoint
0052 0082 DHW priority count R U16 Countdown of time when DHW has priority over CH
(secs). Applicable when DHW priority time is enabled
(see register 452).
0053 0083 DHW heat demand R U16 0=Off,
1=On
0054 0084 DHW burner demand R U16 0=Off,
1=On
0055 0085 DHW requested rate R U16
RPM or %
c
0056 0086 DHW frost heat demand R U16 0=Off,
1=On
0057 0087 DHW frost burner demand R U16 0=Off,
1=On
0058 0088 Active DHW on hysteresis R U16
0°-130° (0.1°C precision)
a
0059 0089 Active DHW off hysteresis R U16
0°-130° (0.1°C precision)
a
005A 0090 DHW storage time R U16 Elapsed DHW storage time (secs)
005B 0091 DHW storage heat demand R U16 0=Off,
1=On
005C 0092
DHW storage burner
demand
R U16 0=Off,
1=On
PUMP STATUS
005D 0093 Pump A 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
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