Honeywell Krom Schroeder BCU 480 Manual page 65

Project planning information
Input bytes (BCU ➔ master)
Byte 2 Display
Fuse F1 defective or safety interlocks
51
51
52
52
53
53
88
99
* Display on BCU..L upon activation of the air valve during program step x
** FS = input/output, safety circuit, NFS = input/output, control system
BCU 480 · Edition 03.16l
Status signal
Byte 0, Bit 2 = 0
discontinuity
Permanent remote reset
Timing cycle too short
Fault signal
Byte 0, Bit 2 = 1
Internal error/negative flame current
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