Siemens SITRANS P Operating Instructions Manual page 194

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