Chint meter dtsu666

Hi. Im trying to connect my smart meter to pvoutput.

The issue im facing is related on how to send this data to pvoutput.
I find it very strange that sending the total imported exported energy values is not an option.
Pvoutput already have the cumulative generation.
to get the energy consumption would simply be a matter of getting a cumulative export and generation and subtract.

Has anyone been through this and found a good solution for it?