CSLS fault detection, system response, and repair procedures > SIS CHARMs logic solver diagnostic parameters

CSLS DiagStatus diagnostic parameter

Name Context Path Description

DiagStatus

CSLS

CSLS_NAME/DIAG_STATUS,

CSLS_NAME/REDU/STBY/DIAG_STATUS

Status of the Diagnostic Subsystem

Conditions Meaning Mapping Impacts Integrity
Past Error Present A condition is present in the CSLS PAST_ERROR parameter. --- N
Persistent Fatal Error After Powerup The same PAST_ERROR condition was present on back-to-back resets. The CSLS is not fully operational. Maintenance Y
Task Checkpoint Alarm A non-critical task has not completed properly in one of the subsystems in the CSLS. Advise Y
Non-Volatile Memory Failure An NVM chip failure has been detected Maintenance Y
Real Time Clock Failure An RTC chip failure has been detected Maintenance Y
Internal A/D Error An A/D chip failure has been detected Maintenance Y
Internal Power Error The CSLS has detected an internal power supply voltage out of range. Maintenance Y