ID Symbols Message Cause/Remedy
St Safety validation mode Device is in safety validation mode.
Complete the functional test and confirm that it was successful in the Func‐
tional Safety wizard.
SU Safety critical device error Acknowledge the error in menu "Functional Safety" and enable Functional
Safety mode.
Acknowledging safety-related errors (Page 168)
If the problem persists, contact Technical Support.
The following symbols are also used on the display and in SIMATIC PDM.
Display SIMATIC PDM/
PLC
Symbol Symbol Description
- Data exchanged
- No data exchanged
- Write protection disabled
EDIT -
● 'EDIT' is permanently enabled in the parameter view. You can read the parameter.
● 'EDIT' flashes in the edit view. You can change the parameter.
L Device is write-protected by a jumper.
LL Button lock of device is enabled
LP Parameters and device functions are write-protected with a user PIN.
SIL - Functional Safety is enabled
Co - The output current is constant (e.g. for loop test).
Diagnostics and troubleshooting
12.2 Diagnostic messages
SITRANS P320/P420 (mA/HART)
Operating Instructions, 06/2018, A5E44852162-AA 189
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