Siemens SITRANS TF280 WirelessHART Operating Instructions Manual page 80

Alarm, error, and system messages
8.1 Overview of messages and symbols
Icon Message
Maintenance alarm
Maintenance demanded
Maintenance required
Process value alarm
Process value warning
Process value tolerance
Data exchange
Data exchange
Write protection ON
Battery exhausted
Low battery capacity
Sufficient battery capacity Charging level approx. 66%
Fully charged battery
80
Description/Significance
e.g.: Sensor breakage, memory error, device malfunction
Aging reserve of device or fitting expired

A sudden fault has occurred

The measured values are invalid. Device maintenance is necessary to reestablish
the functionality.
e.g.: Electronics fault, internal temperature error
Maintenance is recommended.
One or more process values are creating a problem. Therefore the device is not
measuring any process values.
There is a problem with one or more process values. Measured values are
produced but they may be uncertain.
Example: A process value exceeds the device specification.
One or more process values have reached the tolerance limit. Only adjustable
using an engineering tool, e.g. SIMATIC PDM.
Device establishes connection to wireless HART network.
Connection to wireless HART network not available.
Key locking is set, or device functions are password-protected.
Critical battery status. Battery must be replaced.
Charging level approx. 33%
Charging level 100%
SITRANS TF280 WirelessHART
Operating Instructions, 10/2010, A5E02619566-02