Siemens SITRANS TH100 Operating Instructions Manual page 191

ID Symbols Message
FC Maximum supply voltage excee‐
ded
FU Input CPU reconfiguration failed An unrecoverable error occurred in the input CPU.
L -
LL -
LP -
SA Error in EEPROM communica‐
tion
Sb Volatile memory check failure
Maintenance alarm
SC CRC16 error in input CPU con‐
figuration
Sn Exception error during code ex‐
ecution
So Stack integrity error
SU Safety critical device error
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
Operating Instructions, 05/2020, A5E41864807-AB
Cause/Remedy
The device is operated above its specified supply voltage range.
Check the power supply (at the output terminals).
Reset the device or switch it off and back on.
If the problem persists, contact Technical Support.
Reset the device or switch it off and back on.
If the problem persists, contact Technical Support.
The device is write-protected by a write-protection switch.
Button lock is enabled.
Parameters and device functions are write-protected with a user PIN.
An unrecoverable error occurred in the internal communication to the
EEPROM.
Reset the device or switch it off and back on.
If the problem persists, contact Technical Support.
Device electronics error.
Restart the device.
If error continues, device electronics may have a defect.
Repair is required. Contact Technical Support.
An unrecoverable error occurred in the internal input CPU.
Reset the device or switch it off and back on.
If the problem persists, contact Technical Support.
An exception error occurred in the program execution of the main
CPU.
Reset the device or switch it off and back on.
If the problem persists, contact Technical Support.
An exception error occurred in the program execution of the main
CPU.
Reset the device or switch it off and back on.
If the problem persists, contact Technical Support.
Check the error in menu "Diagnostics" in tab "Extended field device
status".
Validate the functional safety configuration or reselect normal oper‐
ation.
If the device does not display an error, repeat the safety start up.
Diagnostics and troubleshooting
11.2 Diagnostic messages
191