ID Symbols Message Cause/Remedy
A9 Event counter 2
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.
AA Device lifetime: Mainte‐
nance demanded
Forthcoming end of configured device's lifetime.
Maintenance is strongly recommended as soon as possible.
Ab Device lifetime: Mainte‐
nance required
Forthcoming end of configured device's lifetime.
Maintenance of device should be planned.
AC Sensor lifetime: Mainte‐
nance demanded
Forthcoming end of configured sensor's lifetime.
Maintenance is strongly recommended as soon as possible.
AD Sensor lifetime: Mainte‐
nance required
Forthcoming end of configured sensor's lifetime.
Maintenance of device should be planned.
AE Service: Maintenance de‐
manded
Forthcoming end of the configured service interval.
Maintenance is strongly recommended as soon as possible.
AF Service: Maintenance re‐
quired
Forthcoming end of the configured service interval.
Maintenance of device should be planned.
AG Calibration: Maintenance
demanded
Forthcoming end of the calibration interval.
Maintenance is strongly recommended as soon as possible.
AH Calibration: Maintenance
required
Forthcoming end of the calibration interval.
Maintenance of device should be planned.
Diagnostics and troubleshooting
12.2 Diagnostic messages
SITRANS P320/P420 (mA/HART)
Operating Instructions, 06/2018, A5E44852162-AA 185
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