ABB EasyLine Series Instructions For Installation Start-Up And Operation page 123

Legend for the Table "Status Messages"
Status Signals
A Status "Failure"
W Status "Maintenance
Request"
F Status "Maintenance
Mode"
S Overall Status
Status Message Categories
a Active status messages not requiring acknowledgement
aQ Active status messages requiring acknowledgement
aL Active status messages requiring acknowledgement and troubleshooting
iQ Inactive status message requiring acknowledgement
A status has occurred in the gas analyzer which requires the
immediate intervention of the user. The measured value is invalid.
A status has occurred in the gas analyzer which will soon require the
intervention of the user. The measured value is valid.
A calibration is being carried out in the gas analyzer, or the
maintenance switch has been set to "On". The measured value is not
a process measured value and is to be discarded.
The overall status is always set in conjunction with the status "Error"
and for individual messages in conjunction with the status
"Maintenance request"; it is not set in conjunction with the status
"Maintenance mode".
Status Messages, Troubleshooting 123