Connection of heat pump with PV system

[Priyanka]

We have "Vitocaldens 222-F HAWB-AC 222.A29" heat pump system.

In our pursuit to activate "Operating State 3 (use of surplus PV energy)" of the smart grid for this heat pump, we aim to establish a connection between the PV system and the heat pump via relay switching contact.  We did come across a mention of achieving a similar outcome through an energy meter. Consequently, I have a few questions:

1. Is it possible to establish the required contact via relay, and if so, could you kindly guide me to the relevant information on this option?
2. If the only available option is through an energy meter, could you clarify whether it must be a Viessmann energy meter or if compatibility exists with other energy meters in the market?
3. Additionally, is it feasible to obtain information about the heat pump's activities, (e.g. Own energy consumption is active), directly from our gateway?

[Tamas1]

A follow-up question here. When SG is activated can we forcefully let the heat-pump to use the electric heater (configured in the 7E82 to 2)? This would be ideal when extremely high solar energy is available but only for short period of time (2-3 hours per day). If this is not achievable through smart grid, can we dynamically manage the activation of electric heater in any other way? Looks like there is a very similar question here: https://community.viessmann.de/t5/Waermepumpe-Hybridsysteme/Vitocal-200-A-AWO-E-AC-201-A16-Smart-Gri... but no answer to it.