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# 2.2.4.7 File System Configuration

Since the Demo Meter application needs to read/write data information from/to an external memory, a File System is mounted on the external memory.

The Datalog application manages the File System, mounting and formatting the disk if needed. Different directories and configuration files are created depending on the data information to be stored in the external memory:

- Metrology configuration file
- User calibration configuration file
- TOU (Time of Use) configuration file
- RTC configuration file
- Console configuration file
- Events configuration file
- Energy data files
- Demand data files

The following image shows the configuration of the File System module.

Figure 2-56.File System Module Configuration

Rev: E