Honeywell BCU 370 - Page 80

BCU 370 · Edition 01.19 80
Annex
Input bytes (BCU ➔ master)
Byte 2 Byte 0, Bit 2 = 0 (Status message) Byte 0, Bit 2 = 1 (Fault message)
20 u0 Fault DG
min
during standby
21 u1 Fault Dg
min
while butterfly valve moves to Open position
22 u2 Fault DG
min
while butterfly valve moves to Closed position
23 u3 Fault DG
min
during pre-ignition time
24 u4 Fault DG
min
during 1
st
safety time on start-up
25 u5 Fault DG
min
during 1
st
flame proving period
26 u6 Fault DG
min
during 2
nd
safety time
27 u7 Fault DG
min
during 2
nd
flame proving period
28 u8 Fault DG
min
during operation
29 u9 Fault DG
min
during post-purge time
30 o0 Fault DG
max
in start-up position/standby
31 o1 Fault DG
max
while butterfly valve moves to Open position
32 o2 Fault DG
max
while butterfly valve moves to Closed position
33 o3 Fault DG
max
during pre-ignition time
34 o4 Fault DG
max
during 1
st
safety time during operation
35 o5 Fault DG
max
during 1
st
flame proving period
36 o6 Fault DG
max
during 2
nd
safety time during operation
37 o7 Fault DG
max
during 2
nd
flame proving period
38 o8 Fault DG
max
during operation
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