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The memory card contains the following data:
the software needed to operate the module
configuration data
documentation and software tools (to be downloaded from the web interface)
scripts and other user-specific data in the /user directory
The factory-installed card has a capacity of 2 GB. The required software to operate the module is already
installed. User-specific data and scripts can be saved in the subdirectory "user". Please do not change any
files outside of this subdirectory, as this may influence the operation of the module and a proper operation
cannot be guaranteed any more.
The memory card and the installed software are necessary to operate the module. If you are con-
sidering to change the SD card, please copy the contents of the original card to the new card with
an appropriate card reader.
9.3 Boot process
The module has a boot loader, which loads and runs the unit's software from the memory card when the
unit is powered up. The indicator for the operating state will light up blue during this. If there is an error,
the indicator will light up red for 5 seconds. After this the boot loader will automatically be restarted. This
will continue until the firmware can be loaded correctly.
9.4 Display of operating state
On the side, the module has a multi-colored indicator for the operating state (Figure 21). The current oper-
ating state is shown by both the color of the indicator as well as by the flash rate.
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