External logging
The external logging describes the possibility of creating a data image. You can log into a database as well as into a file system.
External logging is always set to the entire data source, with all its variables included. There are 2 options for external logging:
- Data image
A subtraction of the current value of the variable from the data source is created.
- Data log
A log is created which shows the changes of the variables.
The following topics about the the external logging are covered in this chapter:
>> External logging in the database
>> External logging in the file system
>> External logging for internal data sources