ABB AO2040 - Page 321

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 321
Summary
The following table shows
• the time sequence of the three status message categories
• The identifier used to identify the status messages in the summary
(q, Q and I).
Status messages not requiring acknowledgment
Status begins Status ends
LED lights up LED goes out
Status signal set Status signal reset
Message appears Message canceled
Status messages requiring acknowledgment
Status begins Status ends Acknowledge
LED lights up LED goes out
Status signal set Status signal reset
Message appears
q
Message remains
I
Message canceled
Status begins Acknowledge Status ends
LED lights up LED goes out
Status signal set Status signal reset
Message appears
q
Message remains
Q
Message canceled
Status messages requiring acknowledgment and intervention
Status begins Status ends Acknowledge,
correct
LED lights up LED goes out
Status signal set Status signal reset
Message appears
q
Message remains
I
Message canceled
Status begins Acknowledge,
correct
Status ends
LED lights up LED goes out
Status signal set Status signal reset
Message appears
q
Message remains
Q
Message canceled