12.2 Diagnostic messages
The following table shows the IDs of diagnostic messages and possible causes and
instructions for corrective actions.
ID Symbols Message Cause/Remedy
A0
Event counter 1
Number overruns above
threshold
Maintenance alarm
The number of overruns of the process value (set in parameters
"Upper limit" and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A1
Event counter 1
Number underruns above
threshold
Process value alarm
The number of underruns of the process value (set in parameters
"Lower limit" and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A2 Event counter 1
Number underruns above
threshold
Maintenance required
The number of underruns of the process value (set in parameters
"Lower limit" and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A3 Event counter 1
Number underruns above
threshold
Maintenance alarm
The number of underruns of the process value (set in parameters
"Lower limit" and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A4
Event counter 2
Number overruns above
threshold
Process value alarm
The number of overruns of the process value (set in parameters
"Upper limit" and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A6 Event counter 2
Number overruns above
threshold
Maintenance required
The number of overruns of the process value (set in parameters
"Upper limit" and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A7 Event counter 2
Number overruns above
threshold
Maintenance alarm
The number of overruns of the process value (set in parameters
"Upper limit" and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A8
Event counter 2
Number underruns above
threshold
Process value alarm
The number of underruns of the process value (set in parameters
"Lower limit" and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
Diagnostics and troubleshooting
12.2 Diagnostic messages
SITRANS P320/P420 with 4 to 20 mA/HART
192 Operating Instructions, 11/2019, A5E44852162-AC
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