Events are classified using the "Severity“ column: 
 
Internal Error (Emergency, Alert, Critical) 
  The fieldbus module has detected a fault in itself (hardware or software) which should 
not occur during normal operation. If this happens, the module must be serviced or 
replaced. 
 
External Error (Error, Warning) 
  The  fieldbus  module  has  detected  what  may  be  a  non-permissible  event  which  is 
affecting the module from the outside. The system may require troubleshooting. 
 
Event (Informational, Notice) 
The  fieldbus  module  has  detected  an  important  normal  operating  event  and  reports  it. 
These  may  include  for  example  configuration  actions  over  the  web  interface  and  other 
configuration interfaces which are also recorded. 
 
Clicking on "Set Module Time” sends the current browser time to the fieldbus module but 
does not permanently store it. After a reset, reboot or loss of power the time begins to run 
again from the year 2000. 
 
Clicking on "Update Log” refreshes the display, and "Clear Log” deletes all entries. The log 
entries are stored in a ring buffer.