CleaverBrooks CFC Operation, Service & Parts Manual page 418

CB FALCON MODBUS COMMUNICATION
Table 4. CB Falcon Modbus register map
000F 0015
0010 0016
0011 0017
0012 0018
0013 0019
0014 0020
0015 0021
0016 0022
0017 0023
0018-001F 0024-0031 RESERVED
0020 0032
0021 0033
0022 0034
0023 0035
4-20 mA remote control
input (S2) terminal
Active CH setpoint
Active DHW setpoint
Active LL setpoint
Register Access Status
Steam pressure
Analog modulation input
Active CH pressure setpoint R
Extended Status Change
BURNER CONTROL
STATUS
Burner control status
Burner control state
Lockout code
Alarm reason
R U16 4-20 mA (0.1 mA precision) or other (see register 609)
R U16
-40°-130° (0.1°C precision)
Setpoint determined by CH setpoint source (register 65).
R U16
-40°-130° (0.1°C precision)
DHW setpoint source (register 81).
R U16
-40°-130° (0.1°C precision)
setpoint source (register 161).
RR U16U1 Register data write access status:
6 0=No register writes allowed,
1=Installer register writes allowed,
2=OEM register writes allowed.
3=All register writes allowed.
R U16 0-150 psi (0.1 psi precision)
R U16 0=No signal, otherwise
4-20 mA (0.1 mA precision)
Duplicate of register 15 when S2 terminal is 4-20 mA.
U16 0-150psi (0.1psi precision)
R U16 Register is cleared (all bits zeroed) after read. Identifies
register groups that have new status or configuration
data in them.
Bit map:
15-5=Reserved
4= DHW plate heat exchanger configuration
3=DHW plate heat exchanger status
2-0=Reserved
R U16 0=Disabled,
1=Locked out,
2-3=Reserved,
4=Anti-short cycle,
5=Unconfigured safety data,
6-33=Reserved,
34=Standby Hold,
35=Standby Delay,
36-47=Reserved,
48=Normal Standby,
49=Preparing,
50=Ignition,
51=Firing,
52=Postpurge,
53-65535=Reserved
R U16 Burner control sequence (I/O) state (see table 11). Model
type determined by register 176.
R U16 0=No lockout,
1-4096 (see Table 8)
R U16 0=None,
1=Lockout (see Lockout code, register 34),
2=Alert (see Table 10),
3=Other
6
a
a
Setpoint determined by
a
Setpoint determined by LL