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ID
Symbols
Message
Cause/Remedy
AJ
Limit monitoring 1
Above limit
Process value alarm
Monitored value is above limit (set in parameter "Upper limit").
AL
Limit monitoring 1
Below limit
Process value alarm
Monitored value is below limit (set in parameter "Lower limit").
An
Limit monitoring 2
Above limit
Process value alarm
Monitored value is above limit (set in parameter "Upper limit").
Ao
Limit monitoring 2
Below limit
Process value alarm
Monitored value is below limit (set in parameter "Lower limit").
AU
Event counter 1
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.
AY
Event counter 1
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.
bE
Out of service
Maintenance alarm
The output signal does not represent the process value. The device
mode is set to "Out of service".
Repair required. Contact Technical Support.
bL
Device restart due to unexpec‐
ted program error
Maintenance alarm
Watchdog function has detected an internal device error.
Restart the device.
If the problem persists, contact Technical Support.
bn
Alarm sensor limit exceeded
Process value alarm
Process value has reached the sensor limit.
Review process conditions versus product specifications.
Diagnostics and troubleshooting
12.2 Diagnostic messages
SITRANS P320/P420 with 4 to 20 mA/HART
194
Operating Instructions, 11/2019, A5E44852162-AC