https://wiki.pnpscada.com/fpost.jsp?thread=524

You can upload any profile csv to pnpscada via ftp and the meters can be populated automatically.

It is basically the same functionality as Tools->Import Readings

This is very similar to the Sensus ftp upload, but it is more generic and configurable. For example, you can create your own meters and just have them automatically ftp upload the data every now and then, and we can be compatible with that via this mechanism.

you can find more information on this process here
csv upload