Honeywell HC900 - Manual (Page 22)

14 HC900 Hybrid Controller Communications User Guide Revision 10
12/07
FP BB – Big Endian Byte Swapped Format
The value 12345678 Hex will be represented as follows:
Bit 23 Bit 0
High Low High Low
REGISTER N
(High)
REGISTER N+1
(Low)
Byte 4
12 Hex
Byte 3
34 Hex
Byte 2
56 Hex
Byte 1
78 Hex
Bit 16 Bit 15 Bit 8 Bit 7 Bit 24 Bit 31