Thank you for your reply (I assume it is a reply to my post
) A few remarks if I may:
1) I am working on Zoe, not Twizzy. Quite different beasts! The Zoe actually is more like a Fluence, software wise.
2) The i907 is a GREAT tool, and actually, art of what we are doing is reverse engineering the i907 (as in: see what it does on the bus) to get the proper parameters out.
3) The i907 is totally inadequate for most of what we want to do, which is some extra live displays (ie regenerative power vs max regenerative max power), and to actively influence certain aspects, such as: leave battery capacity at night to allow for PV charging during the day; avoid fan kick in by monitoring the chargers temperature, etc etc.
The "notwendigkeit" is (for us) all but questionable, though the i907 is a wonderful tool!