The M&C software knows two global faults flags indicating fault conditions which are not linked do devices or subbsystems:
SYSTEM.fault
indicates some sort of general fault, mostly faults occurring during the initialization phase of the M&X. SYSTEM.fault may be one of "OK." and "Summary FAULT". Which condition caused the fault is listed in the event log. A "RESET" to the SYSTEM device clears this fault.
SUMMARY.fault
summarizes the the faults of all devices in the M&C. SUMMARY.fault knows two states, 'FAULT' and 'OK.'. It turns to 'FAULT' if at least one device in the M&C shows a fault.