CleaverBrooks CFC-500 Operation, Service And Parts Manual page 301

Each lockout history record has the format described in Table 5.
Byte Offset
0-1 Lockout code
2-3 Annunciator first out
4-5 Burner control state
6-7 Sequence time
8-11 Cycle
12-15 Hours
16-17 I/O
18-19 Annunciator
20-21 Outlet temperature
22-23 Inlet temperature/Steam
pressure
24-25 DHW temperature
26-27 Outdoor temperature
28-29 Stack temperature
30-31 4-20mA input
32-33 Fault data
Each annunciator configuration record has the format
described Table 6.
Table 6. Annunciator configuration
Byte
Offset Parameter
0-1 Location
2-4 Annunciator short name R/W
5 Unused
6-25 Annunciator name
Table 5. CB Falcon lockout history record
Parameter Read/Write
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Read/
Write Format Note
R/W U16 0=Unused,
1=PII,
2=LCI,
3=ILK,
4=Other
U8
-- U8
R/W U8
CB FALCON MODBUS COMMUNICATION
Format
U16 See register 34 (decimal).
U16 See register 36 (decimal).
U16 See register 33 (decimal).
U16 See register 37 (decimal).
U32 See registers 128-129 (decimal).
U32 See registers 130-131 (decimal).
U16 See register 2 (decimal).
U16 See register 3 (decimal).
U16 See register 7 (decimal).
U16 See register 11 or 20 (decimal). Data type is
dependent on Product type (register 176).
U16 See register 12 (decimal).
U16 See register 13 (decimal).
U16 See register 14 (decimal).
U16 See register 15 (decimal).
U8 Fault dependent data (U8 x 2).
PII, LCI, and ILK terminals are named with configuration
records that have a format described in Table 7.
Table 7. PII, LCI, ILK terminal configuration
Byte
Offset Parameter
0-2 Interlock short name
3 Unused
4-23 Interlock name
The Falcon lockout and hold codes are listed in Table 8.
31
Note
Read/
Write Format Note
R/W U8
-- U8
R/W U8