AERCO Control System (ACS)
APPENDIX B:
Status and Fault Messages
Page 104 of 139
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TABLE B-7: ACS I/O Status
(MSD = Most Significant Digit; LSD = Least Significant Digit)
I/O
Status
(MSD
Bit 3)
Inter-Lock
(MSD
Bit 2)
Inter-Lock 2
(MSD
Bit 1)
Setback
(MSD
Bit 0)
(Lsd
Bit 3)
Sys Strt
Relay
(LSD
Bit 2)
Fault
Relay
(LSD
Bit 1)
Aux
Relay
(LSD
Bit 0)
73
N/A
ON
ON
ON
N/A
OFF
ON
ON
74
N/A
ON
ON
ON
N/A
ON
OFF
OFF
75
N/A
ON
ON
ON
N/A
ON
OFF
ON
76
N/A
ON
ON
ON
N/A
ON
ON
OFF
77
N/A
ON
ON
ON
N/A
ON
ON
ON
78 - 79
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
